# Iron Studios vs Tummies

The clearest difference is price: Iron Studios at Free against Tummies's $0.99. On update cadence, ads, in-app purchases and device support there is nothing between them.

Iron Studios is free to download; Tummies costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Iron Studios ships an update every 2 months, Tummies every 3 months. The most recent releases landed on October 30, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Iron Studios | Tummies |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | **Every 2 months** | Every 3 months |
| Size | 124 MB | 101 MB |
| Requires iOS | **14.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [IRON STUDIOS BARCELONA S.L.](https://appshunter.io/developer/1836213392) | [sosone](https://appshunter.io/developer/1748061632) |

## What reviewers say

### Iron Studios

[App page](https://appshunter.io/ios/app/iron-studios/id6751650605)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


### Tummies

[App page](https://appshunter.io/ios/app/tummies-tummy-time-tracker/id6751774976)

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

**In-app purchases:** none


## Frequently asked questions

### Is Iron Studios free?

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

### Is Tummies free?

Tummies costs $0.99, with no in-app purchases.

### Do Iron Studios or Tummies have ads?

Both Iron Studios and Tummies show ads.

### Which is updated more often, Iron Studios or Tummies?

Iron Studios ships an update every 2 months, and Tummies every 3 months. Most recently, Iron Studios was updated on October 30, 2026 and Tummies on November 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.*