# IOM Vaccine vs ColdTrace

The clearest difference is iOS requirement: IOM Vaccine at 13.0 against ColdTrace's 15.0. 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.

IOM Vaccine ships an update every 2 months, ColdTrace every 5 weeks. The most recent releases landed on October 27, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | IOM Vaccine | ColdTrace |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Size | 66 MB | 3 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [International Organization for Migration (IOM)](https://appshunter.io/developer/1169930889) | [Nexleaf Analytics](https://appshunter.io/developer/1797368988) |

## What reviewers say

### IOM Vaccine

[App page](https://appshunter.io/ios/app/iom-vaccine/id6478944368)

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

**In-app purchases:** none


### ColdTrace

[App page](https://appshunter.io/ios/app/coldtrace/id6742199376)

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

**In-app purchases:** none


## Frequently asked questions

### Is IOM Vaccine free?

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

### Is ColdTrace free?

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

### Do IOM Vaccine or ColdTrace have ads?

Neither IOM Vaccine nor ColdTrace shows ads.

### Which is updated more often, IOM Vaccine or ColdTrace?

IOM Vaccine ships an update every 2 months, and ColdTrace every 5 weeks. Most recently, IOM Vaccine was updated on October 27, 2026 and ColdTrace on October 25, 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.*