Holos Social

#Holos - a mobile ActivityPub server that runs on your phone. A relay server maintains your stable identity when you're offline. Switch between text, photos, videos, and articles from a single account. Currently in private development, sharing progress with the community.

Website: https://holos.social
Relay: https://codeberg.org/tom79/Holos-Relay-Server
App: https://codeberg.org/tom79/Holos-App

Public Key

npub1akm68adaqyrknk3wk666qy4w80jkasu40quwrd87vzsseq9t90tq2wwns5

NIP-05 Address

holossocial_at_mastodon.social@momostr.pink

Profile Code

nprofile1qqswmdar7k7szpmfmghtdddqz2hrhetwcw2hsw8pknlxpggvsz4jh4spz3mhxue69uhhyetvv9ujuerpd46hxtnfduqs6amnwvaz7tmwdaejumr0dsdce7k4

Publishing to

relay.damus.io

nos.lol

Author Public Key

npub1akm68adaqyrknk3wk666qy4w80jkasu40quwrd87vzsseq9t90tq2wwns5

Show more details

Last Notes

2026-04-07 19:16:17 UTC

To people who love publishing pictures and videos, #HolosSocial allows you to connect your S3 or WebDAV cloud so your media are served directly from your own storage across the Fediverse.
As a direct consequence, there is no size limit and videos are automatically transcoded by your device (from 854p to 1920p depending on your choice).
Every feature in #Holos is built toward full independence on the #Fediverse.

2026-04-07 17:51:16 UTC

During the migration, the relay stopped responding to IPv6. It has been fixed for https://holos.social.
This issue helped find a bug in the app (crash during tunnel creation due to timeout).
The regression when composing is also fixed (save message into drafts prompted when posting).
For TestFlight users, the app is still waiting for validation but everyone who asked to join has been added to the beta testers group.
#HolosSocial 1.3.0 should be available for everyone soon.

2026-04-05 19:13:17 UTC

#Holos is now under review for TestFlight! Once approved, I'll add #iOS testers by email invitation (no public link to avoid ghost accounts).
Regarding #AltStore: the current source works with AltStore Classic (sideloading via computer). AltStore PAL (EU marketplace) requires Apple notarization, which I haven't applied for yet.
If you'd like to join the TestFlight beta, send me your email via DM or at hello@fedilab.app. Thanks
#HolosSocial

2026-04-04 09:02:16 UTC

#Holos is now available via #AltStore for #iOS users.
AltStore source: https://files.fedilab.app/altstore/altstore.json
Learn more about Holos: https://holos.social/how-it-works
#HolosSocial

2026-03-28 20:29:23 UTC

#Holos started at the end of 2025. A full #ActivityPub server now runs on your phone, with the ability to use your own domain as your identity, #E2EE DMs via Signal Protocol, zero-knowledge encrypted backup, #ActivityPub media served from your own cloud, a tailored timeline based on your interests thanks to #HolosDiscover, and the ability to switch views depending on your mood or the content you want to browse. Thank you for your feedback and support that helped to go through these steps.

2026-03-28 17:40:19 UTC

#Holos 1.1.1 has been published. You can now use your root domain as your identity with a simple TXT DNS record. If you have only one user, a static JSON file is enough.
#HolosSocial

2026-03-27 19:43:13 UTC

#Holos will support custom root domains tomorrow. You'll be able to use @you@yourdomain.com as your identity while #ActivityPub traffic is routed through a subdomain.
With a single user, a simple static json file will be enough on your root domain.
PS: if you already use a subdomain, it will work without extra work.
#HolosSocial

2026-03-24 20:44:09 UTC

Next step with #Holos and custom domains: being able to use your root domain as your identity. A subdomain would point to the relay via CNAME, but your identity would use your root domain.
I will write a small how-to to make the setup straightforward for everyone.
#HolosSocial

2026-03-24 18:03:43 UTC

#Holos 1.1.0 has been released.
Account recovery is now available: optionally back up your account data with a passphrase and restore it after a reinstall (strongly recommended if you have no cloud backup configured).
The relay stores your backup but cannot read it, it is encrypted on your device before upload (zero-knowledge).
Recovery is managed in Settings > Data & Backup.
Release notes: https://codeberg.org/tom79/Holos-App/releases/tag/1.1.0
#HolosSocial

2026-03-20 19:15:06 UTC

#Holos 1.0.0 is available! With this release, Holos moves from release candidate to production. This version adds a reverse timeline option to display posts oldest-first.
A lot of improvements have also been made to the relay, especially around Bloom filter performance, that are not always reflected in app changelogs.
Available on #FDroid custom repo:
https://fdroid.fedilab.app
Direct download: https://framadrive.org/s/SwXt6GbBC97pZJ4
Release notes: https://codeberg.org/tom79/Holos-App/releases/tag/1.0.0
#HolosSocial
https://files.mastodon.social/media_attachments/files/116/263/099/170/779/903/original/423a59e40ebef9f3.png

2026-03-10 20:14:03 UTC

The app can't be available on #Obtainium like our other apps because it exceeds the 100Mb limit for release attachments on #Codeberg.
Maybe there is another solution that we're not aware of?

2026-03-07 23:24:14 UTC

We will submit Holos to Google Play after F-Droid. We have little hope it will be accepted due to the built-in ActivityPub server inside the app. But for full transparency, you will always be kept informed about submissions and results.

2026-03-06 18:00:57 UTC

#Holos 1.0.0-rc-4 published!
Sync is now much faster thanks to Bloom filters. You can set a TTL on posts when composing or configure a default in settings.
If you have a WebDAV/S3 server, the app can upload media there and use public URLs in ActivityPub.
Videos can be compressed before upload. An experimental vertical video feed is available.
A new Discovery timeline lets you explore posts by tags and language.
More: https://codeberg.org/tom79/Holos-App/releases/tag/1.0.0-rc-4
DL: https://holos.social/signup
#HolosSocial

2026-03-03 21:37:34 UTC

What if every phone could contribute to the #Fediverse, not just consume it?
Short-form video means heavy server-side transcoding for every clip. But your phone can handle it. Re-encode, resize, thumbnails, all done locally. Then push to your own #S3 or #Nextcloud.
No transcoding server. Just simple storage.
We can decentralize the compute, not just the network.
We're working on it
#HolosSocial

2026-03-03 19:54:34 UTC

In the next release of #Holos, Bloom filters will be enabled by default (can be disabled). This allows the relay to deliver only activities that matter to you, without ever knowing who you follow. In practice, this reduces data transfer around 97%, since only about 3% of activities are typically relevant during a sync.
The public timeline is replaced by a discover timeline tailored to your interests.
#HolosSocial
https://files.mastodon.social/media_attachments/files/116/166/994/878/632/957/original/48a5db0e05ad1779.png
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2026-03-03 19:27:51 UTC

In the next #Holos release: post expiration. When composing, you can set a lifetime for your post, from 1 hour to 90 days.
The post will be deleted at minimum after the chosen time, since the app needs to be open and connected to send the Delete activity to other instances.
Still a handy tool if you don't want your posts to last forever.
#HolosSocial
https://files.mastodon.social/media_attachments/files/116/166/889/971/722/580/original/f509fa39990018f3.png

2026-02-28 22:14:31 UTC

In the #Fediverse, most software is built around a specific platform model. One for microblogging, one for video, one for photos... and new ones will keep coming.
With #Holos, your phone runs your own #ActivityPub server. You control your data and can use your own domain as your identity.
Built on the protocol, not a platform model, Holos is not limited to a single use case. One account that adapts to your needs.
That's where we're heading, and we hope for your support.
#HolosSocial

2026-02-27 19:19:31 UTC

Next #Holos release will use Bloom filters (https://en.wikipedia.org/wiki/Bloom_filter) for sync. The relay filters activities, only sending those from accounts you follow and from the local timeline.
The filter is sent each sync and never stored. The relay still has no knowledge of your followings.
Test: 26 followings, 32k pending activities filtered down to a hundred (99.7% reduction).
The public timeline goes away as a result. #HolosDiscover will replace it with content tailored to your interests.
#HolosSocial

2026-02-25 19:23:09 UTC

We were working on improving #Holos moderation features. The new rc-3 should improve your experience. You can now import your CSV block lists for accounts and instances.
The app also supports syncing with block lists with automatic updates.
When a domain is blocked, the app retroactively deletes all related content and then ignores all activities coming from it.
#HolosSocial
https://files.mastodon.social/media_attachments/files/116/132/897/606/196/304/original/923b77cc6b4349f6.jpeg
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2026-02-23 20:08:38 UTC

RE: https://toot.fedilab.app/@apps/116121279230852696
#HolosDiscover was built to solve a concrete problem: when you join #HolosSocial, your mobile server is empty. No posts, no accounts to find. The API provides search and trending content as a fallback for servers with no indexation yet.
We built a web UI at https://discover.holos.social using the same data, so anyone can see what's indexed without being a developer. Any Fediverse app or instance can also access it through the API.
#note1wc3…tgug

2026-02-15 19:55:16 UTC

We're looking into implementing interaction controls in #Holos, following the approach proposed by #GoToSocial. This would let you decide who can reply, like, or boost your posts. It fits well with the Holos philosophy of giving you full control over your online presence. More details here: https://docs.gotosocial.org/en/latest/federation/interaction_controls/
#HolosSocial

2026-02-15 17:56:14 UTC

For custom domains, #Holos currently works with CNAME, which redirects your entire domain to the relay. That's fine for a subdomain, but if you want your identity on your root domain, you probably already use it for something else.
We will add support for that. The relay will handle everything on a subdomain you dedicate to Holos, and automatically generate a webfinger file to host on your root domain. Your identity will be @you@yourdomain.com while the setup runs on a subdomain.
#HolosSocial

2026-02-13 11:39:54 UTC

The relay now automatically generates SSL certificates for custom domains verified via CNAME and enabled. A job runs every 5 minutes to issue new certificates and renew expiring ones. More: https://holos.social/custom-domains

2026-02-10 17:32:28 UTC

Some of you noticed that [@HolosDiscover](https://discover.holos.social ) is following you. It's a Fediverse search engine we built to solve a problem: when you start your own server with #Holos, your index is empty. #HolosDiscover provides a ready-to-use content catalog for everyone.
Only public posts from consenting users are indexed. Deletions and edits are reflected in real-time through ActivityPub activities.
How it works: https://discover.holos.social/how-it-works
Open-source (AGPL-3.0): https://codeberg.org/tom79/Holos-Discover

2026-02-07 16:47:36 UTC

#Holos 1.0.0-rc-2 has been published. In this version, you can connect your domain to create your unique account identity. The first time, it will send a Move activity so you don't lose your followers/following. Then you will have an identity that no longer depends on the relays, and you'll be free to move between relays whenever you want.
More about custom domains: https://holos.social/custom-domains
Download: https://holos.social/signup
Release notes: https://codeberg.org/tom79/Holos-App/releases/tag/1.0.0-rc-2
#HolosSocial

2026-02-03 19:21:22 UTC

We are entering a new step in the development of #Holos and we need more people to test.
We have reopened subscriptions through the app: https://holos.social/signup
We wrote a page explaining how we implemented #E2EE DMs over #ActivityPub: https://holos.social/e2ee
Don't hesitate to contribute and share your feedback with us. Thank you.
#HolosSocial

2026-02-03 16:51:28 UTC

Holos RC-1 has been published. You can now send E2EE DMs over ActivityPub to other #Holos users.
Lots of changes and improvements to discover here: https://codeberg.org/tom79/Holos-App/releases/tag/rc-1
Download: https://framadrive.org/s/korpfpQFDpXYJPr
#HolosSocial

2026-01-30 20:51:13 UTC

If you wonder how Holos works with E2EE over ActivityPub: each user publishes their public encryption keys in their Actor profile. When sending a DM, the app encrypts the message locally using Signal Protocol. The encrypted data goes in a custom ActivityPub field (signalCiphertext), the protocol allows adding extra fields to messages. The standard content field shows a placeholder. Relays only see encrypted data. The recipient's app decrypts it locally.

2026-01-30 19:13:07 UTC

End-to-end encrypted DMs through ActivityPub will be available in the next release #HolosSocial
https://files.mastodon.social/media_attachments/files/115/985/365/873/210/599/original/9c2a4d451c335228.png
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2026-01-16 18:57:36 UTC

We've reopened registrations on #Holos. The first phase helped us identify and fix a bottleneck. All registrations now go through the app. The web version shows where to download it at https://holos.social/signup
Currently we only have our direct download link, but #FDroid/#AltStore and Google Play/App Store (if they accept) are planned.

2026-01-16 05:13:26 UTC

While opening the server to multiple users during the testing phase, we discovered and fixed a bottleneck in the distribution of activities from the relay's shared inbox. Now that the fix is in place, we'll be reopening registrations on the #Holos relay soon.

2026-01-10 20:42:50 UTC

We're temporarily opening registrations on #Holos. Registration via relay web interface is no longer available - only the mobile app allows relay selection and signup.
To test (Android):
1 - Download latest app: https://framadrive.org/s/ZWEWpKQr6Aqp6oF
2 - Enter domain: holos.social
3 - Create your account
Your server starts empty. Search for accounts via name@domain to follow.
Thanks for feedback!

2026-01-09 22:50:09 UTC

Can you suggest accounts to follow that post frequently? Our goal is to optimize Home timeline loading during sync. Thanks for your suggestions

2026-01-03 20:40:42 UTC

Running an ActivityPub server on your phone might sound complicated, but it doesn't have to be. You can just let it run with automatic maintenance, or dive into all the settings if that's your thing. Monitor storage, schedule backups, see what activities are taking up space, whatever level of control you want. Some might never open these screens, others check them daily. And that's totally fine. We made it automatic for everyone, but added all the tools for power users. That's your server #Holos
https://files.mastodon.social/media_attachments/files/115/833/099/986/702/643/original/19a232f433ac16a4.png
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2026-01-01 21:35:09 UTC

Yes, in the latest #Holos release you can compose while being offline. The app will automatically resolve mentions via WebFinger when you reconnect.
https://files.mastodon.social/media_attachments/files/115/821/989/465/722/229/original/d85d5a2f0b7b17ea.jpeg
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2025-12-29 18:08:29 UTC

Custom domain support for #Holos is in development and coming along nicely! Use @user@your-domain.com instead of @user@holos.social, just point your DNS to a relay (changeable anytime). Actor URIs and post URIs stay stable forever, so switching relays requires no migration. Your RSA keys + domain = portable identity. Optional feature for users wanting relay independence.
https://files.mastodon.social/media_attachments/files/115/804/189/946/982/297/original/e823704476cb5a66.jpeg
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2025-12-26 19:35:48 UTC

When you're offline, you can still read your timeline and interact with posts. Actions are queued and will be sent automatically once you're back online. You can check the pending actions queue anytime and cancel any action before it's sent. #Holos
https://files.mastodon.social/media_attachments/files/115/787/546/321/245/868/original/67abf6f4c7b58826.jpeg
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2025-12-22 21:06:19 UTC

Every day, #Holos proves you can run your own ActivityPub server on your phone. We approached the problem differently: instead of copying existing platforms, you're in control. No imposed style - not Twitter-like, Instagram-like, or YouTube-like. Enjoy everything the Fediverse offers and contribute your way.

2025-12-20 20:21:48 UTC

#Holos detects ActivityPub message types and adapts the display accordingly. For example, event posts highlight event-specific data like dates, location, and description.
https://files.mastodon.social/media_attachments/files/115/753/753/488/813/304/original/865f51daf689d057.jpeg

2025-12-20 18:01:15 UTC

New release for #Holos (beta-4)
Improvements
- Faster app startup and sync
- Faster thread loading when opening from notifications
- Data export now includes full activity history
- Booster names display correctly for all Mastodon users
Bug Fixes
- GIF keyboard now preserves reply context
- Like and boost counters persist correctly after navigating away
- Interactions between users on the same server now work properly
- Consistent mention formatting in posts
https://framadrive.org/s/PqRBREDLNKPGgzW

2025-12-19 20:11:43 UTC

#Holos now fully supports privacy-friendly front-ends for most social networks. Opt-in to enable, then customize instances or toggle them individually.
https://files.mastodon.social/media_attachments/files/115/748/051/431/640/716/original/742190a5890271ce.jpeg
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2025-12-16 09:07:15 UTC

We've created a "How it works" page explaining the relay server, mobile app, and how they work together. Check it out to see how #Holos works!
https://holos.social/how-it-works

2025-12-09 20:17:01 UTC

One perk of running your own instance on your phone with #Holos, you control your custom emojis. The relay can offer some, but you're free to use your own. Import them from other instances or upload your own. When composing, you can filter and search through them easily.
https://files.mastodon.social/media_attachments/files/115/691/449/052/846/118/original/60e612e015fd4511.jpeg
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2025-12-05 18:40:51 UTC

#Holos app is getting really close to its beta release. You can now quote posts, create polls, and attach media with alt text descriptions. Opening a conversation shows you the full thread with all replies. Delete requests between servers are working properly, along with all other ActivityPub communications. The federation layer is solid - posts, likes, boosts, follows all sync correctly with remote instances like Mastodon.
https://files.mastodon.social/media_attachments/files/115/668/421/685/031/614/original/8b42c0f07c7d6c01.jpeg
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2025-12-02 18:50:41 UTC

#Holos is progressing nicely. The mobile app now receives all notifications from the Fediverse, follows and unfollows work properly, and you can compose posts. The menu gives access to lists, bookmarks, filters and followed tags. Display settings offer different view modes depending on what you want to browse, all from a single account. Relay server code will be available in a few days. Feel free to bother [@holos_dev](https://holos.social/users/holos_dev ), it's there for testing.
https://files.mastodon.social/media_attachments/files/115/651/473/305/930/912/original/10b9662ecf5b73f1.jpeg
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2025-11-28 21:03:38 UTC

We've been getting asked a lot lately: why #Holos?
Your social data stays on your device. You own it, it's private, you decide what happens with it. This unlocks powerful local tools that shared servers can't offer. Since ActivityPub does not lock you into one format, we take full advantage. Same account, but the interface can change in a tap. Text feed, photo grid, video player. One identity, your rules. That's our goal, and we're getting closer every day.

2025-11-28 17:47:26 UTC

RE: https://holos.social/users/tom79/statuses/1764349767880-7kb7yq
The very first federated post from #Holos, sent directly from a phone running its own ActivityPub server. Posts are served from the phone when online, and cached on the relay when offline (with user-controlled TTL).
#note1ma7…cdvh

2025-11-25 18:12:10 UTC

Quick update: https://holos.social is now up and running!
Source code will be public very soon (link shows 404, repo still private). Registrations will follow shortly after.
Site available in English and French only for now.
For self-hosters, you'll have three options: an all-in-one install script (auto-detects OS, configures everything), Docker, or full step-by-step manual setup. All options are fully documented.

2025-11-22 19:26:41 UTC

We'll run a flagship relay at holos.social. By default, it keeps your profile visible when you're offline and stores incoming activities for up to 7 days so you don't miss anything.
If you want maximum privacy, you'll be able to disable both features. The relay will only provide your stable @username@holos.social - no profile caching, no activity storage. Your phone becomes the only place where your data exists.
You'll be able to toggle this in your app settings anytime.

2025-11-21 21:56:36 UTC

For those who will choose to run their own relay server with #Holos, you will have proper tools to manage it.
Real-time monitoring with live metrics and graphs. Handle moderation reports from other instances with a full queue system. Block domains, manage your team, control registrations, and moderate users when needed.
Run it for yourself, your family and friends, or open it to everyone - you stay in control.
https://files.mastodon.social/media_attachments/files/115/589/919/178/380/497/original/9e0ae442ccb7b908.png
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