# Belly Boi vs biotys

The clearest difference is in-app purchases: biotys at none against Belly Boi's 1. biotys also leads on iOS requirement (13.0 vs 15.0). Belly Boi's advantage is device support (5 vs 3). On price, update cadence and ads there is nothing between them.

Both are free to download. Belly Boi sells 1 one-off in-app purchase. biotys asks for nothing beyond the download.

Belly Boi ships an update every 6 months, biotys every 5 months. The most recent releases landed on October 17, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Belly Boi | biotys |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.5 (2 ratings)](https://appshunter.io/ios/app/belly-boi/id1592909416/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 5 months** |
| Monetization | Free with in-app purchases | — |
| Size | 36 MB | 12 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod, Mac, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Sleepy Boy Studios Ltd](https://appshunter.io/developer/1105841781) | [Amir Aiouaz](https://appshunter.io/developer/1462038680) |

## What reviewers say

### Belly Boi

[App page](https://appshunter.io/ios/app/belly-boi/id1592909416)

This app helps you monitor your daily mood, stomach health, and food intake. It features a journal, custom tags, and image additions for each entry. Track your gut mood for IBS and gastrointestinal issues with monthly and annual statistics.

**Highlights:** Daily mood tracking, Journal entry writing, Gut mood and IBS tracking, Food intake logging, Custom tags for entries, Monthly and annual stats, Cross-device sync

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Support the app | $2.99 | one-time |


### biotys

[App page](https://appshunter.io/ios/app/biotys/id6443545029)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Belly Boi free?

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

### Is biotys free?

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

### Do Belly Boi or biotys have ads?

Neither Belly Boi nor biotys shows ads.

### Which is updated more often, Belly Boi or biotys?

Belly Boi ships an update every 6 months, and biotys every 5 months. Most recently, Belly Boi was updated on October 17, 2026 and biotys on October 16, 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.*