Triathlon Pace Calculator
v3.9 · 22.4 MB · code 25
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File information
UpdatedJan 15, 2026
PublishedAug 8, 2025
Packagebto.android
Versionv3.9 (25)
Size22.4 MB
MD52fa5393f36040d293cb566720148d4e5
Min SDK30
ABIsx86, x86-64, armeabi-v7a, arm64-v8a
Malware scanTRUSTED
Signature SHA1EB:AD:0F:A5:95:F5:4C:CB:F2:F5:CD:7E:9B:76:66:02:C8:71:90:57
SignerCN=Iain Downie, OU=IS Team, O=BTO, L=Thetford, ST=Norfolk, C=UK
Total downloads10,000
This version10,000
Developeriaindownie
Age ratingEveryone
What's new in v3.9
Maintenance update
Security scan
TRUSTED
- Developer signature verified 2026-01-15
- Signature SHA1 EB:AD:0F:A5:95:F5:4C:CB:F2:F5:CD:7E:9B:76:66:02:C8:71:90:57
- File MD5 2fa5393f36040d293cb566720148d4e5
How to install Triathlon Pace Calculator v3.9 on Android 11+
Takes about 2 minutes. You'll need roughly 22.4 MB of free storage.
- Grab bto.android_25.apk — hit the Download button above (22.4 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 2fa5393f36040d29…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find bto.android_25.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=Iain Downie, OU=IS Team, O=BTO, L=Thetford, ST=Norfolk, C=UK. 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 Triathlon Pace Calculator — tap Open on the install screen, or find the Triathlon Pace Calculator icon in your app drawer (this build targets x86/x86-64/armeabi-v7a/arm64-v8a devices).
Common install errors for Triathlon Pace Calculator
- "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 11 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.