# RoundShift: Interval Timer — Voice coach for HIIT & Tabata > Voice-guided interval timer for workouts, breathwork, and focus sprints. (iPhone/iPad app by Carl Law.) - Source: https://appshunter.io/ios/app/roundshift-interval-timer/id6793125180 (this page in markdown: same URL + `.md`) - Developer: [Carl Law](https://appshunter.io/developer/1671704999) - Category: Health & Fitness, Sports - Price: Free with in-app purchases - Rating: 5.00/5 from 1 App Store ratings · 1 written reviews indexed - Age rating: 4+ - Requires: iOS 15.0 · 143 MB - Languages: American English, Arabic, French (France), German (Germany), Hindi, Japanese, European Portuguese, Russian, Chinese (Simplified, China), European Spanish - Released: 2026-07-22 - Data updated: 2026-08-04 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/roundshift-interval-timer/id6793125180/reviews.md ## What is RoundShift? The interval timer you don't have to look at. RoundShift calls out every round — get ready, work, rest, half way, last round — so your eyes stay on the workout, not the screen. BUILT IN SECONDS • Tabata, HIIT, EMOM, strength presets — or design your own • Warm-up, custom intervals, unlimited rounds • Describe a workout in plain words and let RoundShift build it VOICE THAT COACHES • Real coach voices in 10 languages — or calm and hype styles • 89 exercise names spoken aloud in custom workouts • Works with the screen off, phone face down, music playing COACH MODE ON THE BIG SCREEN • AirPlay the countdown to any TV for group sessions and classes • Giant display the whole room can read APPLE WATCH + ADAPTIVE REST (PRO) • Full timer on your wrist with live heart rate • Rest that adapts: end rest early when your heart rate recovers, or extend it when you need more • Workouts logged to Apple Health with the right activity type SEE YOURSELF SHOW UP • Streaks, weekly minutes, and a calendar of every session • Home Screen widgets and quick actions NOT JUST FOR THE GYM • Box breathing and breathwork: 4-4-4-4 in seconds • Stretch and physio holds with spoken changeovers • Focus sprints for study and deep work • Anything that repeats: intervals are intervals RoundShift is free forever for running timers and built-in workouts. RoundShift Pro (one-time purchase, no subscription) unlocks saved workouts, stats, widgets, and Apple Watch. ## Key features - Voice coaching for workouts - Customizable interval presets - Plain language workout builder - Multi-language coach voices - Screen-off and face-down operation - AirPlay for group sessions - Adaptive rest with Apple Watch ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Intervo Pro (Lifetime) | $4.99 | one-time | ## Recent user reviews (1 of 1) All indexed reviews: https://appshunter.io/ios/app/roundshift-interval-timer/id6793125180/reviews.md ### 5/5 — Great app for workouts *2026-07-29* Love using this app for my workouts - it’s easy to use, comes with pre-built interval timers and the ability to adjust and/or create your own. You can also adjust the various settings to your preferences such as voice cues and style; my personal favorite is the three second countdown at each interval, feels like a reward! ## Frequently asked questions about RoundShift ### What is RoundShift? RoundShift is a voice-guided interval timer designed to keep your focus on your workout. It calls out each stage of your exercise, allowing you to avoid constantly checking your screen. The app supports various workout types like HIIT, Tabata, and EMOM. ### Does RoundShift have ads? No, RoundShift does not contain advertisements. The core functionality of running timers and using built-in workouts is free forever. ### What are the benefits of RoundShift Pro? RoundShift Pro is a one-time purchase that unlocks premium features. These include saving custom workouts, accessing detailed workout statistics, using home screen widgets, and full integration with Apple Watch for live heart rate monitoring and adaptive rest. ### Can RoundShift be used for activities other than gym workouts? Yes, RoundShift is versatile and can be used for various timed activities. This includes breathwork exercises like box breathing, stretch holds, and focus sprints for study or deep work. ### How accurate is RoundShift's heart rate tracking? When used with Apple Watch, RoundShift can display your live heart rate. The adaptive rest feature utilizes this data to adjust rest periods based on your heart rate recovery, enhancing workout efficiency. ### What languages are available for the voice coach? RoundShift offers real coach voices in 10 different languages. You can also choose between calm and hype voice styles to suit your preference. ### Is RoundShift compatible with Apple devices? Yes, RoundShift is compatible with Apple Watch, iPhone, iPad, and iPod. It also supports AirPlay for displaying workouts on larger screens like TVs. ### How often is RoundShift updated? The latest version of RoundShift is 1.3, which was last updated on July 31, 2026. This indicates a commitment to ongoing development and improvements for the application. ## Version history (last 4 releases) ### 1.3 — 2026-07-31 Your coach now speaks your language; properly. • Exercise names are announced in a real recorded voice in all 10 languages; no more robotic fallback • Voice packs download quietly in the background and work offline once they're on your device • New exercise names arrive over time; no app update needed • Small fixes and polish throughout ### 1.2 — 2026-07-29 RoundShift isn't just for the gym anymore. • Breathing and Pomodoro: pick your style when you start, get ready-made presets for box breathing and focus sprints • 12 new voice cues — halfway there, last round, and more — now spoken in all 10 languages • Share workouts: send any workout to a friend with one tap • Small fixes and polish throughout ### 1.1 — 2026-07-28 Updated name from Intervo to RoundShift This is a big one — RoundShift now trains with you, not just at you. • Apple Watch app: your full timer on your wrist, with live heart rate • Adaptive rest (Pro): end rest early when your heart rate recovers, or add time when you need it — your body sets the pace • Coach mode: AirPlay a giant countdown to any TV for group sessions • Quick Timer on the watch: work/rest/rounds in three taps, save it to your phone as a preset • Per-workout activity types, logged correctly to Apple Health • Voice cues now speak exercise names in custom workouts • Home Screen widgets and long-press quick actions Free forever for timers and built-in workouts. Pro is a one-time purchase — no subscription. ### 1.0 — 2026-07-23 No release notes. --- *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 2026-08-04.*