Quick Numo test observations
Installation:
- From ZapStore/Graphene: ✅
- minor: None of the APKs from Github worked on an older Android device 🤷♂️ (prob. due to being older, should be fixed with PlayStore inclusion)
Onboarding:
- super fast ✅
LN pay with QR:
- worked right away, no glitch ✅ (used Blink)
NFC:
- had to enable and remove the covers of the phones, standard NFC stuff 🤷♂️
Tap pay:
- used Minibits (I needed a quick install Cashu wallet on regular Android, I chose Minibits). Had to find out how to activate NFC payment on Minibits with the small NFC-like icon
- Tap-to-pay worked! ✅🚀
- Sometimes the tap took several seconds, not really tap-boom-done but tap-hold-hold-done 😟 I think this is when the payer wallet does mint operations for proper denominations DURING the nfc exchange process. Very error-prone.
Offline tap pay:
- First tests failed 😟 Reason is no right denominations
- With amount round in sats (100 sats) it worked ✅
General UI:
- Balance is not showed. The only place I could find it is during withdraw.
Withdrwal:
- Worked fine (I used cashu withdraw to cashu.me)
Others:
- The POS-selected Cashu/LN setting is not nice UX, it would be better if the payer can decide on this somehow. The user-controlled Cashu/LN is prone to huge user confusion.
- Peyer wallets should optimized for denominations that cover all amounts. This setting should be the default (vs. size optimizaed). In case of error, it should show the closest (largest) possible denomination, maybe that's fine to use (overpay by few sats).
- After a failed cashu payment, Numo reverts to LN. This can get unnoticed and get confusing.
- There was one instance when the payer wallet claimed success, but Numo showed error. I was not able to recover the sent ecash on the payer side (proofs already spent), so my guess is that it actually succeeded, but Numo showed it as error. Dangerous, as it may be lost funds.
- For withdraw cashu a QR option would be nice.
optout
npub1kx…3lecx
2026-03-06 07:18:22 UTC
in reply to nevent1q…g058
Author Public Key
npub1kxgpwh80gp79j0chc925srk6rghw0akggduwau8fwdflslh9jvqqd3lecxPublished at
2026-03-06 07:18:22 UTCEvent JSON
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"content": "Quick Numo test observations\nInstallation:\n- From ZapStore/Graphene: ✅\n- minor: None of the APKs from Github worked on an older Android device 🤷♂️ (prob. due to being older, should be fixed with PlayStore inclusion)\nOnboarding:\n- super fast ✅\nLN pay with QR:\n- worked right away, no glitch ✅ (used Blink)\nNFC:\n- had to enable and remove the covers of the phones, standard NFC stuff 🤷♂️\nTap pay:\n- used Minibits (I needed a quick install Cashu wallet on regular Android, I chose Minibits). Had to find out how to activate NFC payment on Minibits with the small NFC-like icon\n- Tap-to-pay worked! ✅🚀\n- Sometimes the tap took several seconds, not really tap-boom-done but tap-hold-hold-done 😟 I think this is when the payer wallet does mint operations for proper denominations DURING the nfc exchange process. Very error-prone.\nOffline tap pay:\n- First tests failed 😟 Reason is no right denominations\n- With amount round in sats (100 sats) it worked ✅\nGeneral UI:\n- Balance is not showed. The only place I could find it is during withdraw.\nWithdrwal:\n- Worked fine (I used cashu withdraw to cashu.me)\nOthers:\n- The POS-selected Cashu/LN setting is not nice UX, it would be better if the payer can decide on this somehow. The user-controlled Cashu/LN is prone to huge user confusion.\n- Peyer wallets should optimized for denominations that cover all amounts. This setting should be the default (vs. size optimizaed). In case of error, it should show the closest (largest) possible denomination, maybe that's fine to use (overpay by few sats).\n- After a failed cashu payment, Numo reverts to LN. This can get unnoticed and get confusing.\n- There was one instance when the payer wallet claimed success, but Numo showed error. I was not able to recover the sent ecash on the payer side (proofs already spent), so my guess is that it actually succeeded, but Numo showed it as error. Dangerous, as it may be lost funds.\n- For withdraw cashu a QR option would be nice.",
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