# ChainFlow: Interval Timer — Custom Workout & Circuit > Customizable interval timer for varied workout and focus routines. (iPhone/iPad app by Michael Ebako-Hodgson.) - Source: https://appshunter.io/ios/app/chainflow-interval-timer/id6755700190 (this page in markdown: same URL + `.md`) - Developer: [Michael Ebako-Hodgson](https://appshunter.io/developer/1855675493) - Category: Health & Fitness, Utilities - Price: Free with in-app purchases - Rating: 5.00/5 from 1 App Store ratings - Age rating: 4+ - Requires: iOS 17.0 · 22 MB - Languages: American English - Released: 2025-12-12 - Data updated: 2026-09-03 - Monetization: freemium - User reviews in markdown: https://appshunter.io/ios/app/chainflow-interval-timer/id6755700190/reviews.md ## What is ChainFlow? A custom interval timer for routines where every interval can be different. Most workout timers are built around repeating the same work and rest periods. ChainFlow lets you build the exact sequence you need, with individual timing for every step. Create HIIT workouts, circuit training sessions, stretching and mobility routines, boxing rounds, exercise sequences, drawing practice, focus sessions, and more. BUILD ANY ROUTINE Add as many intervals as you need. Give each one its own name and timing, then drag them into the exact order you want. START FAST WITH TEMPLATES Begin with ready-made HIIT, Tabata, Boxing, Morning Mobility, Pomodoro, and Gesture Drawing templates—or start completely from scratch. Every template becomes a normal ChainFlow routine you can fully edit. HANDS-FREE TIMING Hit Start and focus on what you're doing instead of watching the clock. ChainFlow automatically moves through your sequence and gives you clear audio cues at each transition. • Works while your phone is locked or ChainFlow is in the background • Live Activities and Dynamic Island support • See your current interval and what comes next • Pause, skip forward, or return to the previous interval • Optional 3-2-1 countdown before starting • Works alongside music, podcasts, and other audio • Optional audio ducking during cues BUILD ONCE. USE IT AGAIN. Save your favorite routines, duplicate individual intervals or entire chains, reorder them anytime, and quickly adjust a routine for your next session. ChainFlow works especially well when your routine doesn't fit a rigid repeating timer: • Custom interval workouts • Circuit training • HIIT and Tabata • Stretching and mobility • Boxing and round training • Exercise and strength training • Yoga and meditation sequences • Gesture and figure drawing practice • Pomodoro and focus sessions Whether you're training, stretching, drawing, studying, or building a routine of your own, ChainFlow keeps the timing out of your head so you can stay in the flow. ## Key features - Custom interval chaining - Adjustable work/rest times per interval - Clear audio cues - Hands-free operation - Screen-off functionality - Routine saving - Dark interface ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | ChainFlow Pro | $4.99 | one-time | ## Frequently asked questions about ChainFlow ### What is ChainFlow? ChainFlow is an interval timer designed for routines where each interval can be different. It allows users to chain together multiple intervals, each with its own setup, work duration, and alert time, offering flexibility beyond standard Tabata timers. ### What types of routines is ChainFlow suitable for? ChainFlow is perfect for HIIT and Tabata training, circuit training, boxing rounds with varying times, stretching, mobility, yoga flows, physical therapy intervals, and focus/study blocks like Pomodoro. ### Can I save my custom routines in ChainFlow? Yes, ChainFlow allows you to save your created routines. This means you can easily pick up where you left off without needing to re-enter your custom interval settings each time. ### Does ChainFlow offer audio cues for transitions? Yes, ChainFlow provides clear audio cues. It uses soft beeps for transitions between intervals and a distinct alarm when a routine finishes, ensuring you stay on track without needing to constantly watch the screen. ### Is ChainFlow free to use? ChainFlow is free to use for its core functionality. An upgrade to Pro is available for unlimited routine creation and cloud synchronization across multiple devices. ### What devices does ChainFlow support? ChainFlow is available for iOS devices, specifically supporting iPhones and iPads. ### How often is ChainFlow updated? The latest version of ChainFlow is 2.1, and it was last updated on July 4, 2026. This indicates a recent update, suggesting ongoing development and support. ### Does ChainFlow require an account to start using it? No, ChainFlow does not require an account to start using its features. It offers a clean, dark interface with no clutter and allows you to begin timing your routines immediately. ## Version history (last 5 releases) ### 3 — 2026-09-02 A major ChainFlow reliability and usability update. • More reliable timing while your phone is locked or the app is in the background • New HIIT, Tabata, Boxing, Morning Mobility, Pomodoro, and Gesture Drawing templates • Improved audio cues with Bell, Gong, Beep, Soft Chime, and Double Beep • New option to lower other audio during timer cues • See what's coming next while a chain is running • Skip forward or return to the previous interval • Duplicate intervals and entire chains • Undo accidental deletes • Optional 3-2-1 start countdown • Clearer chain-complete feedback Plus additional fixes and polish based on early user feedback. ### 2.1 — 2026-07-04 Updated description and title. ### 2.0 — 2026-03-27 What's New in Version 2.0 1. Unlimited Links for Everyone Create as many exercise links as you want - no more limits! Build the perfect workout chain without restrictions. 2. Edit Your Links Made a mistake? No problem! Swipe right on any link to edit the name, timing, or settings. Swipe left to delete. 3. Enhanced Audio Feedback Improved sound alerts make it easier to hear phase transitions, countdowns, and completions during workouts. 4. 3 Saved Chains Free users can now save up to 3 complete workout chains for quick access. 5. Better Free Experience We've completely reimagined the free tier - enjoy unlimited creativity with your workout chains! ### 1.3 — 2026-01-06 What's New in ChainFlow 1.3 • Home Screen Widgets Add ChainFlow widgets to your home screen for instant workout access. Tap any widget to immediately start your most recent chain without opening the app. • Enhanced Quick Actions Long-press the ChainFlow app icon to see your saved chains and jump directly into any workout with one tap. • Improved Live Activities Real-time timer updates on your Lock Screen and Dynamic Island now work more reliably across all iOS versions. • Better Performance Faster app startup, more reliable background timer execution, and improved overall stability. • Refined Interface Cleaner settings screen and consistent experience across iPhone and iPad. ### 1.2.1 — 2025-12-12 No release notes. ## Apps similar to ChainFlow | App | Rating | Price | Category | | --- | --- | --- | --- | | [moonbird breathing coach](https://appshunter.io/ios/app/moonbird-breathing-coach/id6751544333) | 2.7 (3) | Free | Health & Fitness | | [DaysyDay Partner](https://appshunter.io/ios/app/daysyday-partner/id1533070954) | 4.0 (8) | Free | Health & Fitness | | [Custom Interval Timers](https://appshunter.io/ios/app/custom-interval-timers/id1552160706) | 5.0 (14) | Free | Health & Fitness | | [Run/Walk Interval Training](https://appshunter.io/ios/app/runwalk-interval-training/id6758255233) | 5.0 (1) | Free | Health & Fitness | | [RoundCue Interval Timer](https://appshunter.io/ios/app/roundcue-interval-timer/id1478137874) | 4.8 (45) | Free | Health & Fitness | | [Loop Timers](https://appshunter.io/ios/app/loop-timers/id6766261265) | — | Free | Health & Fitness | ## Related topics [gym timer custom](https://appshunter.io/ios/topics/gym-timer-custom) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-03.*