Custom Interval Timer: Workout v1.0.24
APK · 7.1 MB · version code 24 · Android 5.0+ · uploaded Jan 18, 2026
- Signature matches the Google Play version Details
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Compared with the latest version
The latest version is v1.0.25, uploaded May 31, 2026 — about 4 months after this one.
- Size: this file is 7.1 MB; the latest is 7.1 MB (2.4 KB larger).
- Both versions request the same permissions.
File information
- Version
- v1.0.24 (24)
- Uploaded
- Jan 18, 2026
- Size
- 7.1 MB
- Requires
- Android 5.0+ (API 21)
- CPU support
- Any (no native code)
- Screen
- Small screens and larger
- MD5
- 3faeb68bfebae7197de5b86cb3d3f697
- Signing certificate (SHA-1)
- E4:14:E0:E0:6C:CC:B8:58:06:89:BB:8D:96:CF:9C:91:F1:12:08:C1
- Signed by
- CN=Edgar, OU=MATH Domain, O=MATH Domain Development, ST=CA, C=US
- File name
- com-mathdomaindevelopment-intervaltimer-24-73184021-3faeb68bfebae7197de5b86cb3d3f697.apk
- Package
- com.mathdomaindevelopment.intervaltimer
- Downloads (all versions)
- 10K+
- Age rating
- PEGI 3 · Everyone
What's new in v1.0.24
(1.0.24)
+ Updated target API to Android 15 (SDK 35): Added support for Predictive Back Gesture.
+ Changed default values of several settings (Announce: Midpoint, Next Interval. Show Next Interval. TTS Language Source.). If you have never changed these settings you may notice these changes and will have to revert to your preferred settings manually in the Settings Area.
+ Addressed deprecation regarding announcement feedback.
+ Bug fix: Fixed crash caused while setting up announcement feedback.
Permissions (12)
This version requests 12 permissions, none of them sensitive.
- Access adservices ad id android.permission.ACCESS_ADSERVICES_AD_ID
- Access adservices attribution android.permission.ACCESS_ADSERVICES_ATTRIBUTION
- Access adservices topics android.permission.ACCESS_ADSERVICES_TOPICS
- Advertising ID com.google.android.gms.permission.AD_ID
- Control vibration android.permission.VIBRATE
- Foreground service special use android.permission.FOREGROUND_SERVICE_SPECIAL_USE
- Full network access android.permission.INTERNET
- Internal broadcast protection (app-defined) com.mathdomaindevelopment.intervaltimer.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
- Prevent the device from sleeping android.permission.WAKE_LOCK
- Run foreground services android.permission.FOREGROUND_SERVICE
- Show notifications android.permission.POST_NOTIFICATIONS
- View network connections android.permission.ACCESS_NETWORK_STATE
Security & authenticity
Security rating: Trusted
Signing certificate
- Signature matches the Google Play version Checked by the source store on Jan 18, 2026.
- Certificate issued to “MATH Domain Development” This is the certificate of the Google Play version.
- Same certificate as the 2 other versions checked
Store checks
- Developer signature verified Jan 18, 2026
- Validated against Google Play Jan 18, 2026
- Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020
Scans come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (2 other versions compared). AAPKs doesn't scan files itself.
How to install Custom Interval Timer: Workout on Android 5.0+
You'll need about 14.1 MB of free space.
- Download the APK — tap Download APK above (7.1 MB). Chrome shows “File might be harmful” for every APK file; choose Download anyway only if you trust this file.
- Open the file — tap the download notification, or open Files › Downloads and tap com-mathdomaindevelopment-intervaltimer-24-73184021-3faeb68bfebae7197de5b86cb3d3f697.apk.
- Allow the install (first time only) — Android 8 and later asks for permission the first time an app opens an APK: tap Settings in the prompt, turn on Allow from this source, then go back. Manual path: Settings › Apps › Special app access › Install unknown apps (on Samsung: Settings › Apps › ⋮ › Special access). On Android 7 and older: Settings › Security › Unknown sources.
- Check the file (optional) — the MD5 of the downloaded file should be 3faeb68bfebae7197de5b86cb3d3f697. If it differs, the file is damaged or was changed: delete it and download again.
- Tap Install — Android asks “Do you want to install this app?”. If Google Play Protect shows a warning, read it before you continue: the source store rated this file Trusted, but only install apps from sources you trust. If an earlier version is installed, this one only installs as an update when it is signed with the same certificate (SHA-1 shown above).
- Open Custom Interval Timer: Workout — tap Open on the install screen, or find it in your app drawer.
Common install problems
- “App not installed” — a version signed with a different certificate, or a newer version, is already installed (Android doesn't allow downgrades). Uninstall it first; back up your data, because uninstalling deletes it.
- “There was a problem parsing the package” — the file is incomplete, or your Android is too old (this version needs Android 5.0+). Download it again, or pick an older version.
- Blocked by Play Protect — Play Protect checks apps from outside the Play Store. Only continue if you trust the source.