Hello Haylou Watch App
v3.7.19 · 62.8 MB · code 30719
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File information
UpdatedFeb 14, 2026
PublishedOct 19, 2020
Packagehu.tiborsosdevs.haylou.hello
Versionv3.7.19 (30719)
Size62.8 MB
MD5e00977c09b03aceb7b4f8de14f106da3
Min SDK23
ABIsx86, x86-64, armeabi-v7a, arm64-v8a
Malware scanTRUSTED
Signature SHA14F:1C:0E:2D:81:9D:9A:35:B7:76:95:28:1F:BC:02:0B:35:C1:8C:8F
SignerCN=Tibor Borsos, OU=Haylou, O=self-employed, L=Zalaegerszeg, ST=Zala, C=hu
Total downloads500,000
This version500,000
DeveloperTibor Borsos
Age ratingEveryone
What's new in v3.7.19
19/12/2026 - version: 3.7.18
- Full-screen view in the watch face editor
- minor UI improvements
17/11/2025 - version: 3.7.16
- sleep sync. bug fix
17/10/2025 - version: 3.7.14
- bug fixes and performance improvements
28/09/2025 - version: 3.7.13
- Haylou Solar 5/Ultra watch face uploading bug fix
- minor UI changes, bug fixes and performance improvements
31/08/2025 - version: 3.7.9
- Haylou Solar Ultra (LS23) support
18/08/2025 - version: 3.7.7
- bug fixes and performance improvements
- Full-screen view in the watch face editor
- minor UI improvements
17/11/2025 - version: 3.7.16
- sleep sync. bug fix
17/10/2025 - version: 3.7.14
- bug fixes and performance improvements
28/09/2025 - version: 3.7.13
- Haylou Solar 5/Ultra watch face uploading bug fix
- minor UI changes, bug fixes and performance improvements
31/08/2025 - version: 3.7.9
- Haylou Solar Ultra (LS23) support
18/08/2025 - version: 3.7.7
- bug fixes and performance improvements
Security scan
TRUSTED
- Developer signature verified 2026-02-14
- Signature SHA1 4F:1C:0E:2D:81:9D:9A:35:B7:76:95:28:1F:BC:02:0B:35:C1:8C:8F
- File MD5 e00977c09b03aceb7b4f8de14f106da3
How to install Hello Haylou Watch App v3.7.19 on Android 6.0 Marshmallow+
Takes about 2 minutes. You'll need roughly 62.8 MB of free storage.
- Grab hu.tiborsosdevs.haylou.hello_30719.apk — hit the Download button above (62.8 MB). If your browser warns about APK files, choose Keep or Download anyway — that warning fires on every APK, not just this one.
- Trust your browser to install — on Android 8+ go to Settings → Apps → Special access → Install unknown apps, pick the app you downloaded with (Chrome, Firefox, Files, etc.), and flip Allow from this source. On older Android, toggle Unknown sources under Security.
- (Optional) Verify the file — compute the MD5 of the downloaded APK and make sure it matches e00977c09b03aceb…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find hu.tiborsosdevs.haylou.hello_30719.apk in your Files app under Downloads, then tap it. Android's package installer will appear.
- Check the signer — the install screen will name the publisher. For this build it should read CN=Tibor Borsos, OU=Haylou, O=self-employed, L=Zalaegerszeg, ST=Zala, C=hu. If it doesn't match, cancel — you have the wrong file.
- Review permissions & tap Install — scroll the permission list, then confirm. If Play Protect flags it, tap Install anyway (this APK was scanned as TRUSTED).
- Done — open Hello Haylou Watch App — tap Open on the install screen, or find the Hello Haylou Watch App icon in your app drawer (this build targets x86/x86-64/armeabi-v7a/arm64-v8a devices).
Common install errors for Hello Haylou Watch App
- "App not installed" — usually means an older or differently-signed version is already on your device. Uninstall it first, then retry. Your data may be lost unless you back it up.
- "Parse error" — the APK is for a newer Android than yours. This version needs Android 6.0 Marshmallow or later. Pick an older build from the versions list below.
- "There was a problem parsing the package" — the download was interrupted. Delete the file and re-download over Wi-Fi.
- Works on one phone but not another — this build ships x86/x86-64/armeabi-v7a/arm64-v8a native code. Devices with a different CPU will reject it.