Custom Interval Timer: Workout app icon

Custom Interval Timer: Workout

Tabata? HIIT? 100% Custom... Create your workouts with Custom Interval Timer.

MATH Domain Development · com.mathdomaindevelopment.intervaltimer

Not rated yet 10K+ downloads v1.0.25 7.1 MB Android 5.0+ PEGI 3 · Everyone

Download APK 7.1 MB All versions
  • Signature matches the Google Play version Details

At a glance

Latest version
v1.0.25 (25)
Updated
May 31, 2026 (4 months ago)
APK size
7.1 MB
Requires
Android 5.0+ (API 21)
CPU support
Any (no native code)
Category
Health & Fitness (app)
Listed since
Sep 21, 2022 (at least)
Permissions
12
Website
mathdomaindevelopment.blogspot.com
Developer contact
[email protected]
Privacy
Developer's privacy policy

About this APK

Custom Interval Timer: Workout is an app by MATH Domain Development in the Health & Fitness category, listed since at least September 2022. It has no native code, so it runs on any Android processor.

Since version 1.0.22, the APK grew from 5.9 MB to 7.1 MB. It asks for 12 permissions, none of them sensitive. It asks for the same permissions as version 1.0.24. The app can read the advertising ID that ad and analytics services use.

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.

Description

From the listing uploaded by “appupdater”.

Custom Interval Timer helps you create workout timers that guide you through your exercise routines. General Features + Create Timers that guide you through your workout. + Set Timer names, Interval names, Interval Times, and number of Rounds. + Gives voice, sound, and/or vibration feedback. + Customize the theme, font size, and font style. + Works in the background while using a different app or while screen is off. Setup You'll find that setting up a Timer is fairly straightforward. To create a Timer , you set up an Interval List . Set up an Interval List by adding Intervals to the list. Add as many Intervals to the Interval List as you'd like. Customize each Interval by giving it a name and a time to countdown from. You can cycle through the Interval List as many times as you'd like (1-99) by changing the Rounds number. Playback Controls Playing a Timer works much like a media player. You can play or pause the Timer. You can skip Forward to the next Interval or skip back to the previous one. Feedback System The feedback system lets you know where you are in your Timer. It notifies you of: the final 5 seconds of an Interval, the start of an Interval, the Round you're on, and the end of the Timer. This makes it seem like you have your own workout trainer, guiding you through your workout. You can be notified of these events by voice, sounds, and/or vibration. The available options make Custom Interval Timer one of the best interval timer apps in the market. This customizable interval training timer is great for Running, Tabata, High Intensity Interval Training (HIIT), Cycling, Weigh-Lifting, CrossFit, MMA training, Boxing, Yoga, Stretching, Home workouts, Fitness, Pilates and much more! This is a free to download, ad supported app. Thanks for any support. MATH Domain Development

Version history

4 versions are listed, going back to v1.0.22. Since v1.0.23 it requires Android 5.0+.

v1.0.25 LATEST May 31, 2026 7.1 MB TRUSTED v1.0.24 Jan 18, 2026 7.1 MB TRUSTED v1.0.23 Dec 15, 2025 7.1 MB TRUSTED v1.0.22 Jun 10, 2024 5.9 MB TRUSTED

All 4 versions

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 2 other versions checked

Store checks and file details

  • Developer signature verified May 31, 2026
  • Validated against Google Play May 31, 2026
  • Signed byCN=Edgar, OU=MATH Domain, O=MATH Domain Development, ST=CA, C=US
  • Signing certificate (SHA-1)E4:14:E0:E0:6C:CC:B8:58:06:89:BB:8D:96:CF:9C:91:F1:12:08:C1
  • File MD5733908a2140e7c0c6bd1fda59c79e0d2
  • Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020

Scans and ratings 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 — compare the MD5 and signer after downloading.

Permissions (12)

Custom Interval Timer: Workout requests 12 permissions, none of them sensitive.

Required hardware & features

Custom Interval Timer: Workout APK: questions and answers

Can I install this APK over the version I already have?

Yes, if your installed copy is older. It is signed like the Google Play version, so Android installs it as an update and keeps your data.

Is the Custom Interval Timer: Workout APK safe?

No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. Its signature matches the Google Play version. It is signed with the same certificate as the 2 other versions checked. After downloading, check that the file's MD5 is 733908a2140e7c0c6bd1fda59c79e0d2.

Tags

mathdomaindevelopment intervaltimer health fitness custom interval timer

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