# Liminal Flow vs Better Sleep Diary

The clearest difference is rating: Liminal Flow at 5.0 against Better Sleep Diary's 4.3. Liminal Flow also leads on iOS requirement (16.0 vs 18.6). Better Sleep Diary's advantage is in-app purchases (none vs 4) and update cadence (every 2 days vs every 2 months). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Liminal Flow sells 4 in-app purchases, starting at $4.99 per month. Better Sleep Diary asks for nothing beyond the download.

Liminal Flow holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 4 and 3 respectively.

Liminal Flow ships an update every 2 months, Better Sleep Diary every 2 days. The most recent releases landed on June 4, 2026 and August 14, 2026 respectively.

## The numbers

| Metric | Liminal Flow | Better Sleep Diary |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/liminal-flow/id6445901345/reviews)** | [4.3 (3 ratings)](https://appshunter.io/ios/app/better-sleep-diary/id6754345892/reviews) |
| Number of ratings | **4** | 3 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 105 MB | 3 MB |
| Requires iOS | **16.0** | 18.6 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Liminal Flow LLC](https://appshunter.io/developer/1669795723) | [Gruffydd Johnston](https://appshunter.io/developer/1651486785) |

## What reviewers say

### Liminal Flow

[App page](https://appshunter.io/ios/app/liminal-flow/id6445901345)

Experience immersive soundscapes designed for meditation, sleep, focus, and deep relaxation. This app generates unique, evolving audio experiences to help regulate your nervous system and cultivate presence. It supports various uses, from personal wellness to professional client sessions.

**Highlights:** Infinitely evolving soundscapes, Supports sleep and meditation, Enhances focus and creativity, Nervous system regulation, Designed for deep listening, Sound refuge for relaxation

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $4.99 | per month |
| Monthly | $9.99 | per month |
| Annual | $39.99 | per year |
| Annual | $59.99 | per year |


### Better Sleep Diary

[App page](https://appshunter.io/ios/app/better-sleep-diary/id6754345892)

Log your nightly sleep details and factors that may impact it. See trends over time with simple charts and summaries to understand patterns and make better decisions about your sleep.

**Highlights:** Record nightly sleep details, Note impacting factors, Add custom notes, View sleep trends over time, Track changes from new habits, See simple charts and summaries

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Liminal Flow free?

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

### Is Better Sleep Diary free?

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

### Which has better reviews, Liminal Flow or Better Sleep Diary?

Liminal Flow is rated higher. Liminal Flow averages 5.0 out of 5 from 4 ratings, while Better Sleep Diary averages 4.3 from 3 ratings.

### Do Liminal Flow or Better Sleep Diary have ads?

Neither Liminal Flow nor Better Sleep Diary shows ads.

### Which is updated more often, Liminal Flow or Better Sleep Diary?

Liminal Flow ships an update every 2 months, and Better Sleep Diary every 2 days. Most recently, Liminal Flow was updated on June 4, 2026 and Better Sleep Diary on August 14, 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.*