# Interval Flow vs Focus & Sleep Sounds

The clearest difference is rating: Interval Flow at 4.7 against Focus & Sleep Sounds's 3.3. Interval Flow also leads on review sentiment (48% vs 34%) and ratings volume (168 vs 37). Focus & Sleep Sounds's advantage is update cadence (every 4 days vs fortnightly). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Interval Flow sells 10 in-app purchases, starting at $4.99 per 3 months and Focus & Sleep Sounds sells 4 in-app purchases, starting at $0.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Interval Flow holds the better App Store score, 4.7 against 3.3. Both are backed by a comparable volume of ratings — 168 and 37 respectively. Written reviews point the same way: 48% of Interval Flow's written reviews are positive against 34% of Focus & Sleep Sounds's.

Interval Flow ships an update fortnightly, Focus & Sleep Sounds every 4 days. The most recent releases landed on October 15, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Interval Flow | Focus & Sleep Sounds |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (168 ratings)](https://appshunter.io/ios/app/interval-flow-wod-timer/id6444124987/reviews)** | [3.3 (37 ratings)](https://appshunter.io/ios/app/focus-and-sleep-sounds-flow/id6475684432/reviews) |
| Number of ratings | **168** | 37 |
| Positive reviews | **48.1% of reviews** | 34.1% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 4 days** |
| Monetization | Subscription | Subscription |
| Size | 20 MB | 27 MB |
| Requires iOS | 18.6 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Bence Kaposzta](https://appshunter.io/developer/1650069302) | [Dmitry Sergunov](https://appshunter.io/developer/1464301009) |

## What reviewers say

### Interval Flow

[App page](https://appshunter.io/ios/app/interval-flow-wod-timer/id6444124987)

This app revolutionizes fitness routines with deep customization and advanced tracking for various activities like HIIT, Yoga, and CrossFit. It allows users to create, share, and follow personalized workouts with features like color-coded intervals, real-time progress tracking, and voice assistance.

**Highlights:** Color-coded intervals, Customizable circuits, Real-time progress tracking, Voice assist and search, Exercise library, Workout sharing

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3 Month | $4.99 | per 3 months |
| 1 Month | $9.99 | per month |
| 1 Month, 3 day trial | $9.99 | per month |
| Annual | $14.99 | per year |
| 1 Year discounted | $25.95 | per year |
| 1 Year, 3 day trial | $39.99 | per year |
| 1 Year | $39.99 | per year |
| 1 Year Intro month | $39.99 | per year |
| Free Lifetime subscription | Free | one-time |
| Lifetime | $24.99 | one-time |

**What reviewers like**

- 👍 Nicely designed with good features
- 👍 Unique and brilliantly for keeping fit
- 👍 Simplicity gets it done

**What reviewers complain about**

- 🐛 App crashes on launch
- 🐛 App doesn't remember interval settings
- 🐛 App rearranges workout order
- 🐛 Cannot see questionnaire properly
- 🐛 Robot voice with no visual instructions

**Reported bugs**

- Programs deleted after update
- App crashes when adding a program
- Show/Hide Instructions adds time to interval
- App defaults to unused workout
- Cannot permanently skip to end of timed activity

**Requested features**

- Increase repetitions to 20
- Streamline adding intervals
- Make it possible to hide unused workouts
- Add music integration or option
- Provide visual instructions for moves


### Focus & Sleep Sounds

[App page](https://appshunter.io/ios/app/focus-and-sleep-sounds-flow/id6475684432)

This app helps you create the perfect ambiance for focus, relaxation, and sleep with personalized music playlists. It features an integrated Pomodoro timer to enhance productivity and offers ambient videos to complement your audio experience.

**Highlights:** Personalized music playlists, Binaural beats for focus, Integrated Pomodoro timer, Ambient videos, Extensive music library, Meditation sounds

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Week Plan | $0.99 | per 7 days |
| Monthly Plan | $2.99 | per month |
| Year Plan | $7.99 | per year |
| Lifetime access | $12.99 | one-time |


## Frequently asked questions

### Is Interval Flow free?

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

### Is Focus & Sleep Sounds free?

Focus & Sleep Sounds is free to download, with in-app purchases available.

### Which has better reviews, Interval Flow or Focus & Sleep Sounds?

Interval Flow is rated higher. Interval Flow averages 4.7 out of 5 from 168 ratings, while Focus & Sleep Sounds averages 3.3 from 37 ratings.

### Do Interval Flow or Focus & Sleep Sounds have ads?

Neither Interval Flow nor Focus & Sleep Sounds shows ads.

### Which is updated more often, Interval Flow or Focus & Sleep Sounds?

Interval Flow ships an update fortnightly, and Focus & Sleep Sounds every 4 days. Most recently, Interval Flow was updated on October 15, 2026 and Focus & Sleep Sounds on October 5, 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.*