Comparison

IntervalTimer(x) vs Habit Builder

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

Head to head
About

IntervalTimer(x)

This app provides a customizable interval timer for workouts, focus sessions, and breaks. It offers audio cues, visual progress, and tracks workout history locally. Optional body metrics can be entered for calorie estimates, all stored securely on your device.

Highlights
  • Customizable work/rest/sets intervals
  • Audio cues for transitions
  • Workout history log
  • Local calorie estimates
  • Offline functionality
  • Siri Shortcuts integration
Features
Read full description

IntervalTimer - Train On Your Terms IntervalTimer is a clean, customizable interval timer built for workouts, focus sessions, and recovery breaks. Set your work duration, rest duration, and number of sets , then let the app keep you on pace with audio cues and a visual progress indicator. Your data stays on your device. IntervalTimer collects no personal data and has no account system. Everything - your workout history, body metrics, timer configurations, and intentions - is stored locally using Apple's SwiftData framework. Nothing leaves your phone. There are no servers, no cloud sync, no analytics pipelines, and no third-party SDKs tracking your behavior. The optional body metrics (weight, height, sex) you enter for calorie estimates are saved only in your device's local storage via UserDefaults. They are never transmitted, never shared, and never used for any purpose beyond the in-app calorie calculation you see on screen. Features: - Fully customizable work/rest/sets intervals - Audio cues for transitions and completion - Workout history log with session details - Calorie estimates based on your local profile - Intentions tracking to reflect on your mindset - Pre-configured templates to get started fast - Siri Shortcuts and Spotlight integration - Works entirely offline - always Disclaimer: Calorie estimates are educational only and not a substitute for medical advice.Consult a healthcare provider before making health decisions.

About

Habit Builder

Features
Read full description

Habit Builder – Ganbaru! Build habits you'll actually stick to — with a companion who grows alongside you. Every habit you complete feeds your companion's progress. Level up, unlock new companions, and watch your effort turn into visible growth — no guilt, no gimmicks, just steady momentum. FEATURES • Today view — see exactly what's scheduled and check things off in one tap • Streaks — track daily streaks per habit, with best-streak records • Companion — a leveling pet that grows as you build consistency, with a full collection to unlock • Reports — weekly rank, daily score trends, and a full streak breakdown • History — a full year heatmap so you can see your consistency at a glance • Reminders — local notifications scheduled per habit, right from the habit editor • iCloud Sync (optional) — your data syncs privately across your own devices, never shared • On-device encouragement — short, private motivational messages generated on your device PRIVACY FIRST Habit Builder doesn't have accounts, servers, analytics, or ads. Everything is stored locally on your device with SwiftData. Optional iCloud Sync only ever touches your own private iCloud database. Export or delete all your data anytime, with one tap — no confirmation emails, no waiting. Ganbaru means "do your best" — Habit Builder is built to help you do exactly that, one small streak at a time.

Screenshots

IntervalTimer(x)4 screens
Habit Builder4 screens

Verdict

The call

The clearest difference is price: IntervalTimer(x) at Free against Habit Builder's $2.99. Habit Builder's advantage is update cadence (every 4 days vs every 3 weeks) and device support (3 vs 1). On ads, in-app purchases and iOS requirement 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

IntervalTimer(x) is free to download; Habit Builder costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

IntervalTimer(x) ships an update every 3 weeks, Habit Builder every 4 days. The most recent releases landed on September 17, 2026 and September 30, 2026 respectively.

Scorecard3 real differences · 6 level
IntervalTimer(x) versus Habit Builder: the parameters behind the verdict, then further details
ParameterIntervalTimer(x)Habit Builder
PriceFree — better$2.99
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 3 weeksEvery 4 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhoneiPhone, iPad, Apple Watch — better
Requires iOS18.118.0 — better
Further details — not scored
Size9 MB20 MB
Age rating4+4+
DeveloperShapeHaven Innovations LLCAbolfazl Rejali

In-app purchases

None

IntervalTimer(x)

No in-app purchases

None

Habit Builder

No in-app purchases

Questions

Is IntervalTimer(x) free?
IntervalTimer(x) is free to download, with no in-app purchases.
Is Habit Builder free?
Habit Builder costs $2.99, with no in-app purchases.
Do IntervalTimer(x) or Habit Builder have ads?
Neither IntervalTimer(x) nor Habit Builder shows ads.
Which is updated more often, IntervalTimer(x) or Habit Builder?
IntervalTimer(x) ships an update every 3 weeks, and Habit Builder every 4 days. Most recently, IntervalTimer(x) was updated on September 17, 2026 and Habit Builder on September 30, 2026.

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