# IntervalTimer(x) vs Habit Builder

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.

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.

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.

## The numbers

| Metric | IntervalTimer(x) | Habit Builder |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/intervaltimerx/id6745199760/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 4 days** |
| Monetization | Free | — |
| Size | 9 MB | 20 MB |
| Requires iOS | 18.1 | **18.0** |
| Devices | iPhone | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [ShapeHaven Innovations LLC](https://appshunter.io/developer/1747127977) | [Abolfazl Rejali](https://appshunter.io/developer/6792252048) |

## What reviewers say

### IntervalTimer(x)

[App page](https://appshunter.io/ios/app/intervaltimerx/id6745199760)

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:** macOS Compatibility

**In-app purchases:** none


### Habit Builder

[App page](https://appshunter.io/ios/app/habit-builder-ganbaru/id6798006324)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*