# Belly Flow vs CaffeineTrack

The clearest difference is price: Belly Flow at Free against CaffeineTrack's $1.99. Belly Flow also leads on update cadence (every 3 weeks vs every 3 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Belly Flow is free to download; CaffeineTrack costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Belly Flow ships an update every 3 weeks, CaffeineTrack every 3 months. The most recent releases landed on September 8, 2026 and August 31, 2026 respectively.

## The numbers

| Metric | Belly Flow | CaffeineTrack |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 3 months |
| Size | 23 MB | 28 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Gabriella Broberg](https://appshunter.io/developer/1833119841) | [Netblast AB](https://appshunter.io/developer/6791803060) |

## What reviewers say

### Belly Flow

[App page](https://appshunter.io/ios/app/belly-flow/id6751012592)

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

**In-app purchases:** none


### CaffeineTrack

[App page](https://appshunter.io/ios/app/caffeinetrack-sleep-better/id6759205408)

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

**In-app purchases:** none


## Frequently asked questions

### Is Belly Flow free?

Belly Flow is free to download, with no in-app purchases.

### Is CaffeineTrack free?

CaffeineTrack costs $1.99, with no in-app purchases.

### Do Belly Flow or CaffeineTrack have ads?

Neither Belly Flow nor CaffeineTrack shows ads.

### Which is updated more often, Belly Flow or CaffeineTrack?

Belly Flow ships an update every 3 weeks, and CaffeineTrack every 3 months. Most recently, Belly Flow was updated on September 8, 2026 and CaffeineTrack on August 31, 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.*