# Trommen vs Format Bio

The clearest difference is update cadence: Format Bio at every 4 days against Trommen's every 11 months. Format Bio also leads on iOS requirement (13.0 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Trommen ships an update every 11 months, Format Bio every 4 days. The most recent releases landed on October 3, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Trommen | Format Bio |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 4 days** |
| Size | 12 MB | 14 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ebillet a/s](https://appshunter.io/developer/504282633) | [1StepAhead](https://appshunter.io/developer/524040923) |

## What reviewers say

### Trommen

[App page](https://appshunter.io/ios/app/trommen/id1424284509)

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

**In-app purchases:** none


### Format Bio

[App page](https://appshunter.io/ios/app/format-bio/id1571456939)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Trommen free?

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

### Is Format Bio free?

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

### Do Trommen or Format Bio have ads?

Neither Trommen nor Format Bio shows ads.

### Which is updated more often, Trommen or Format Bio?

Trommen ships an update every 11 months, and Format Bio every 4 days. Most recently, Trommen was updated on October 3, 2026 and Format Bio 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.*