# IntervalTimer(x) vs SleepLoop

The clearest difference is in-app purchases: IntervalTimer(x) at none against SleepLoop's 3. SleepLoop's advantage is ratings volume (13 vs 1). On price, rating, update cadence and ads there is nothing between them.

Both are free to download. SleepLoop sells 3 in-app purchases, starting at $1.99 per month. IntervalTimer(x) asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for IntervalTimer(x) against 5.0 for SleepLoop. That said, the two scores are not equally well evidenced: SleepLoop has 13 ratings behind it against 1, so its average is the more settled of the two.

IntervalTimer(x) ships an update every 3 weeks, SleepLoop every 10 days. The most recent releases landed on July 6, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | IntervalTimer(x) | SleepLoop |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/intervaltimerx/id6745199760/reviews) | [5.0 (13 ratings)](https://appshunter.io/ios/app/sleeploop-brown-noise-rain/id6753655756/reviews) |
| Number of ratings | 1 | **13** |
| Positive reviews | — | 75.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 10 days** |
| Monetization | **Free** | Freemium |
| Size | 9 MB | 13 MB |
| Requires iOS | 18.1 | **17.6** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [ShapeHaven Innovations LLC](https://appshunter.io/developer/1747127977) | [WD Studio](https://appshunter.io/developer/1842547806) |

## 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


### SleepLoop

[App page](https://appshunter.io/ios/app/sleeploop-brown-noise-rain/id6753655756)

This app offers a variety of ambient sounds, including brown, pink, green, and white noise, along with over 100 nature sounds like rain and ocean waves. It aims to improve sleep, focus, and anxiety relief through its minimalist design and seamless background playback.

**Highlights:** Brown, pink, green, white noise, 100+ nature and rain sounds, Minimalist vinyl record interface, Seamless background playback, Ad-free experience, Focus and anxiety relief

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly $1.99 | $1.99 | per month |
| Premium Annual $19.99 | $8.99 | per year |
| SleepLoop Premium Lifetime | $39.99 | one-time |


## Frequently asked questions

### Is IntervalTimer(x) free?

IntervalTimer(x) is free to download, with no in-app purchases.

### Is SleepLoop free?

SleepLoop is free to download, with in-app purchases available.

### Which has better reviews, IntervalTimer(x) or SleepLoop?

IntervalTimer(x) and SleepLoop are both rated 5.0 out of 5 on the App Store, from 1 and 13 ratings respectively.

### Do IntervalTimer(x) or SleepLoop have ads?

Neither IntervalTimer(x) nor SleepLoop shows ads.

### Which is updated more often, IntervalTimer(x) or SleepLoop?

IntervalTimer(x) ships an update every 3 weeks, and SleepLoop every 10 days. Most recently, IntervalTimer(x) was updated on July 6, 2026 and SleepLoop on September 19, 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.*