Custom Interval Timer: Workout v1.0.25
APK · 7.1 MB · version code 25 · Android 5.0+ · uploaded May 31, 2026
- Signature matches the Google Play version Details
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File information
- Version
- v1.0.25 (25)
- Uploaded
- May 31, 2026
- Size
- 7.1 MB
- Requires
- Android 5.0+ (API 21)
- CPU support
- Any (no native code)
- Screen
- Small screens and larger
- MD5
- 733908a2140e7c0c6bd1fda59c79e0d2
- 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-25-74988086-733908a2140e7c0c6bd1fda59c79e0d2.apk
- Package
- com.mathdomaindevelopment.intervaltimer
- Downloads (all versions)
- 10K+
- Age rating
- PEGI 3 · Everyone
What's new in v1.0.25
(1.0.25)
- Placed limits on setting interval times: There is a character input limit of 2 for hours, 4 for minutes, and 5 for seconds. Total interval time can not be over 99 hours.
+ Addressed crashes in the following areas: Setting up announcing feedback, inputting interval time, adding new interval, share and "Please wait" dialogs at end of Timer.
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 May 31, 2026.
- Certificate issued to “MATH Domain Development” This is the certificate of the Google Play version.
- Same certificate as the 3 other versions checked
Store checks
- Developer signature verified May 31, 2026
- Validated against Google Play May 31, 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 (3 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-25-74988086-733908a2140e7c0c6bd1fda59c79e0d2.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 733908a2140e7c0c6bd1fda59c79e0d2. 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.