# OTB vs Allergotrack

The clearest difference is iOS requirement: Allergotrack at 12.2 against OTB's 16.4. On price, update cadence, ads and in-app purchases there is nothing between them.

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

OTB ships an update every 4 months, Allergotrack every 5 months. The most recent releases landed on September 22, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | OTB | Allergotrack |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 5 months |
| Size | 312 MB | 99 MB |
| Requires iOS | 16.4 | **12.2** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [Maricel Constanza Testa](https://appshunter.io/developer/1806585199) | [Allergopharma](https://appshunter.io/developer/1821162386) |

## What reviewers say

### OTB

[App page](https://appshunter.io/ios/app/otb/id6744239108)

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

**In-app purchases:** none


### Allergotrack

[App page](https://appshunter.io/ios/app/allergotrack/id6747382577)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OTB free?

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

### Is Allergotrack free?

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

### Do OTB or Allergotrack have ads?

Neither OTB nor Allergotrack shows ads.

### Which is updated more often, OTB or Allergotrack?

OTB ships an update every 4 months, and Allergotrack every 5 months. Most recently, OTB was updated on September 22, 2026 and Allergotrack on September 10, 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.*