# RunIntervals vs Sleep Sounds ..

The clearest difference is in-app purchases: Sleep Sounds .. at none against RunIntervals's 2. Sleep Sounds .. also leads on ratings volume (2.4K vs 123). RunIntervals's advantage is ads (none vs shown) and update cadence (every 3 months vs every 38 months). On price, rating, review sentiment and device support there is nothing between them.

Both are free to download. RunIntervals sells 2 one-off in-app purchases. Sleep Sounds .. asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.7 for RunIntervals against 4.8 for Sleep Sounds ... That said, the two scores are not equally well evidenced: Sleep Sounds .. has 2.4K ratings behind it against 123, so its average is the more settled of the two. Written reviews are what separate them: 90% of RunIntervals's written reviews are positive against 92% of Sleep Sounds ..'s.

RunIntervals ships an update every 3 months, Sleep Sounds .. every 38 months. The most recent releases landed on October 17, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | RunIntervals | Sleep Sounds .. |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (123 ratings)](https://appshunter.io/ios/app/runintervals/id1387917509/reviews) | **[4.8 (2.4K ratings)](https://appshunter.io/ios/app/sleep-sounds/id1605454852/reviews)** |
| Number of ratings | 123 | **2.4K** |
| Positive reviews | 90.4% of reviews | **91.9% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 3 months** | Every 38 months |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 26 MB | 27 MB |
| Requires iOS | **11.3** | 13.0 |
| Devices | iPhone, iPod, Apple Watch | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Robotic Jam LLC](https://appshunter.io/developer/1330538093) | [UniCom Technology](https://appshunter.io/developer/1270764210) |

## What reviewers say

### RunIntervals

[App page](https://appshunter.io/ios/app/runintervals/id1387917509)

Set custom interval timers with voice or tone alerts. This app seamlessly integrates with your existing audio and fitness apps, pausing or lowering music volume to ensure you never miss an alert.

**Highlights:** Customizable interval durations, Voice and tone alerts, Music volume lowering, Spoken audio pausing, Works with other apps, No user data collection

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Tip | $0.99 | one-time |
| Big Tip | $2.99 | one-time |

**What reviewers like**

- 🚀 Perfect app
- 🚀 Great app
- 🚀 Simple and effective
- 🚀 Straightforward and easy to use
- 🚀 Does exactly what it needs to

**What reviewers complain about**

- 🐛 Does not work
- 🐛 Tones fail
- 🐛 Alerts don't work
- 🐛 Stops randomly
- 🐛 No sound on watch

**Reported bugs**

- Interval tones not working with podcast/music
- Interval tones not working on Apple Watch
- App randomly stops during workouts

**Requested features**

- Ability to swap run/walk intervals
- Option to start with walking
- Ability to set number of repeats
- Vibration alerts
- Longer interval options (up to 30/60/120 mins)


### Sleep Sounds ..

[App page](https://appshunter.io/ios/app/sleep-sounds/id1605454852)

Create personalized soundscapes with a wide variety of high-definition nature sounds, rain, and white noise. Save your favorite mixes and use the built-in timer to automatically stop playback. Enjoy offline functionality and background mode for uninterrupted relaxation.

**Highlights:** HD sound collection, Mixable soundscapes, Customizable ambiences, Favorite sound mixes, Automatic timer, Offline functionality, Background mode

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

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- 🚀 Customization options
- 💤 Helps with sleep
- 🎨 Variety of sounds
- 💰 Free app

**What reviewers complain about**

- 🐛 Randomly shuts off
- 🔇 Lack of background playback

**Reported bugs**

- Randomly shuts off
- Incompatible with some devices

**Requested features**

- More sound options
- Improved background playback


## Frequently asked questions

### Is RunIntervals free?

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

### Is Sleep Sounds .. free?

Sleep Sounds .. is free to download, with no in-app purchases.

### Which has better reviews, RunIntervals or Sleep Sounds ..?

Sleep Sounds .. is rated higher. RunIntervals averages 4.7 out of 5 from 123 ratings, while Sleep Sounds .. averages 4.8 from 2.4K ratings.

### Do RunIntervals or Sleep Sounds .. have ads?

Sleep Sounds .. shows ads; RunIntervals does not.

### Which is updated more often, RunIntervals or Sleep Sounds ..?

RunIntervals ships an update every 3 months, and Sleep Sounds .. every 38 months. Most recently, RunIntervals was updated on October 17, 2026 and Sleep Sounds .. on October 18, 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.*