Would use but needs polish
Response from developer
Thank you for your suggestions,the new version v1.0.3 fix the problems,you can now set exercise name and set the number of exercise more easily,and fix the countdown bug.

This app helps you create and follow custom interval training routines for various fitness activities. It provides clear visual cues, voice announcements, and haptic feedback to keep you focused. Track your progress with a detailed dashboard of completed workouts and training streaks.
1.0.7
November 1, 2026
New in 1.0.7: • Refined Light, Dark and Original themes. Vivid yellow, green and red training screens clearly identify Ready, Work and Recover in every theme. • Added an illustrated first-use tutorial. Revisit every screen and setting from Tutorial in the top-right corner of Settings. • Improved support for nine languages. Interface and voice defaults follow your device region, with English for unsupported regions. Each language option now occupies one equal-width cell. • Delete individual history entries with confirmation. Save unfinished workouts with actual training time highlighted in red. • Fixed the missing “1” in recovery countdowns and improved background music volume restoration after announcements. • Exercise-name announcements and background audio ducking are on by default for new users; existing manual choices are preserved. • Membership options appear in Lifetime, Annual, Quarterly and Monthly order, with Lifetime selected by default. • Replaced the default launch image with HIIT Timer branding.
MoreUnlimited workouts, history, and training insights.
Thank you for your suggestions,the new version v1.0.3 fix the problems,you can now set exercise name and set the number of exercise more easily,and fix the countdown bug.
Interval Timer is designed for a variety of workouts including HIIT, circuit training, bodyweight exercises, cardio, and boxing. You can customize timings for work, recovery, sets, and cycles to suit your specific fitness goals.
Yes, you can start with ready-made workout plans provided by the app. Alternatively, you have the flexibility to create your own custom routines by adjusting timings and exercise sequences.
The app uses clear visual stages, voice announcements, and haptic feedback to guide users through each interval. This ensures you know when to get ready, work, or recover without needing to constantly check your screen.
Interval Timer allows you to review completed workouts, total training time, high-intensity time, and workout streaks. Access to complete workout history and training insights is available with the optional Premium subscription.
The app offers interface and voice announcement support in both English and Chinese. This makes it accessible to a wider range of users.
Based on the provided data, Interval Timer is supported on iPhone and iPod. It is designed for iOS devices.
The latest version of Interval Timer was released on August 8, 2026, with the initial release on July 28, 2026. This indicates recent development activity.
Interval Timer offers a Monthly Premium subscription for $2.99, which includes a 7-day free trial. This subscription unlocks unlimited workouts, complete workout history, and training insights.