Comparison

JustMove AI vs Interval Timer

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

JustMove AI

Features
Read full description

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.

About

Interval Timer

Features
Read full description

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

JustMove AI4 screens
Interval Timer4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Interval Timer sells 1 one-off in-app purchase. JustMove AI asks for nothing beyond the download.

UpkeepUpdate frequency

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.

Scorecard1 real difference · 5 level
JustMove AI versus Interval Timer: the parameters behind the verdict, then further details
ParameterJustMove AIInterval Timer
PriceFreeFree
Update frequencyEvery 5 days — betterEvery 9 days
AdsYesYes
In-app purchasesNo — betterYes
DevicesiPhoneiPhone, iPad — better
Requires iOS17.017.0
Further details — not scored
Size318 MB69 MB
Age rating12+4+
DeveloperNaoya EnokidaKatsunobu Sunagawa

In-app purchases

None

JustMove AI

No in-app purchases

1 purchases

Interval Timer

One-time1
  • Interval Timer Pro$1.99

Questions

Is JustMove AI free?
JustMove AI is free to download, with no in-app purchases.
Is Interval Timer free?
Interval Timer is free to download, with in-app purchases available.
Do JustMove AI or Interval Timer have ads?
Both JustMove AI and Interval Timer show ads.
Which is updated more often, JustMove AI or Interval Timer?
JustMove AI ships an update every 5 days, and Interval Timer every 9 days. Most recently, JustMove AI was updated on October 20, 2026 and Interval Timer on October 4, 2026.

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