JustMove AI vs Interval Timer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
JustMove AI
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Turn Exercise into a Daily Habit with Your AI Coach No more giving up after a few days—your AI coach is here to encourage you every step of the way. Build stamina, sharpen your focus, and boost your mood. Experience the real benefits of daily exercise in your everyday life. Key Features: Chat with an AI coach – Friendly support for goal‑setting and workout advice. Custom goals – Track steps, active calories, and workout minutes. Daily progress alerts – Motivational messages and emoji gauges make effort visible. One‑a‑day tips – Short hints on nutrition, stretching, and sleep to keep you on track. Streak rewards – Hit goals on consecutive days to unlock new AI coaches. Calendar view – See your achievement history at a glance. Perfect for You if… Workouts often fizzle out after a few days. Busy schedule but still want sustainable exercise. Prefer positive encouragement to grow your streak. Like a game‑style approach to fitness. Use and love Apple Watch. Download now and take the first step toward a fresher you—together with your AI coach! Note: The app works on iPhone alone, but pairing with Apple Watch provides the most accurate data.
Interval Timer
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Whether you're settling in to focus or about to move, this is one interval timer for both. Switch between Focus mode and Workout mode with a single tap, and each one greets you with its own timing defaults, color, and wording. In Focus mode the work phase is called "Focus"; in Workout mode it's "Work." Breaks are called "Breathe" and "Long Break" — no mechanical countdown language, just a bit of warmth while you push through. ■ Who it's for - Anyone using the Pomodoro Technique to focus on study or work - Anyone timing HIIT or Tabata-style workouts - Anyone who needs phase changes to actually reach them while the phone is locked - Anyone tired of timer apps buried in ads ■ Free features - Pomodoro preset (25 min work / 5 min break, 15 min long break every 4 sets, 8 sets total) - HIIT preset (fully customizable duration and set count) - Custom work time, rest time, and set count - Start, Pause, Reset, Skip - Sound + haptic + notification on every phase change — arrives even when the screen is locked - Save 1 custom preset - Screen stays awake while the timer runs - Session summary screen after the final set - Available in Japanese, English, and Simplified Chinese ■ Pro features (one-time purchase, no subscription) - Unlimited custom presets - History & Stats (today / this week / all-time focus totals, a 7-day chart, and a session log) - Focus BGM (16 tracks to choose from, continuous play and volume control) - No ads - Restore Purchases supported Timing is calculated from elapsed seconds since start, not a countdown that decrements — so coming back from the background or a locked screen never leaves the display out of sync.
Screenshots
Verdict
The clearest difference is in-app purchases: JustMove AI at none against Interval Timer's 1. On price, update cadence, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Interval Timer sells 1 one-off in-app purchase. JustMove AI asks for nothing beyond the download.
JustMove AI ships an update every 5 days, Interval Timer every 9 days. The most recent releases landed on October 20, 2026 and October 4, 2026 respectively.
| Parameter | JustMove AI | Interval Timer |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 days — better | Every 9 days |
| Ads | Yes | Yes |
| In-app purchases | No — better | Yes |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 318 MB | 69 MB |
| Age rating | 12+ | 4+ |
| Developer | Naoya Enokida | Katsunobu Sunagawa |
In-app purchases
JustMove AI
No in-app purchases
Interval Timer
- Interval Timer Pro$1.99









