DRAWING NO. TLR-2026 SHEET 3 / 4 ANDROID APK, ARM64 iOS TESTFLIGHT STATUS TEST BUILDS
◄  TWO APPS PER PHONE  ►POS. C-01

Install Signal für GNU + GNU Taler für Signal — ready-built test apps

[3] You need both apps: the messenger and the wallet. They have their own package names, so they install next to the official Signal app and the official GNU Taler wallet without touching them. These are personal test builds, signed with my own keys, not official releases of Signal or GNU Taler.

← Sheet 1: Pitch Android iOS Sheet 4: Setup →
C-02 Android — download
1 · WALLET

GNU Taler für Signal

Version 1.6.9-lenkenhoff.20261110.2253 · de.lenkenhoff.talerfuersignal.fdroid ↓ Download APK SHA-256 3f26859224fd068270cb31c36f7e8c9ca1bd59eceb28af3293104aff5d01405c
2 · MESSENGER

Signal für GNU

Version 8.34.2 · arm64-v8a · de.lenkenhoff.signalfuergnu ↓ Download APK SHA-256 3e85805b2d299ee45cb87d6ccb04d928477a3b16e62c9d32e45032e2ab8e09bc
INSTALL
STEP 1 ►

Download both APKs on the phone

wallet first, then the messenger
  • Android asks once whether your browser may install apps: allow it for this browser.
STEP 2 ►

Open the files and install

the official apps stay untouched
  • If Android warns about an unknown developer: that is expected for apps from outside the stores.
  • Optional: compare the SHA-256 above with sha256sum <file>.apk.
STEP 3 ►

Set up Signal für GNU

as primary device, or linked next to the official Signal
  • Step by step on Sheet 4: as your only Signal app, or linked to your account next to the official Signal, also on the same phone.
UPDATES ►

Both apps update themselves

from updates.lenkenhoff.de
  • They check regularly and offer the new version. No store needed.
NOTE

If the official GNU Taler wallet is installed as well, Android may ask which app should open a taler:// link. Choose GNU Taler für Signal for payments that came through Signal für GNU. The test wallet returns only to the two test messengers (Signal für GNU and Talermost); the official Signal app cannot talk to it.

C-03 iOS — TestFlight
ACCESS ON REQUEST

Both apps are available as an internal TestFlight build. The number of seats is limited, so access is handed out personally. Send a short mail with the e-mail address of your Apple ID.

✉ Request iOS beta

Or write to andreas@lenkenhoff.de.

AFTER THE INVITATION
  1. Apple sends you an invitation by e-mail. Accept it.
  2. Install the TestFlight app from the App Store.
  3. Install GNU Taler für Signal and Signal für GNU from TestFlight.
  4. Set up Signal für GNU as described on Sheet 4, as primary or linked device. The same procedure applies on the iPhone.
C-04 Test money
DEMO CURRENCY KUDOS

All tests use the public demo of GNU Taler: exchange exchange.demo.taler.net, currency KUDOS, no real money. Withdraw KUDOS into GNU Taler für Signal from the demo bank at bank.demo.taler.net; then a payment from a chat works as shown on Sheet 1.

TITLETALER IN THE CHAT — INSTALL THE TEST APPS
DRAWNA. LENKENHOFF
CHECKED—
DATE2026-11-10
DRAWING NO.TLR-2026
REVISION1.0
SHEET3 / 4