# Letter Tracking System vs KeyMail

The clearest difference is device support: Letter Tracking System at 3 against KeyMail's —. On price, in-app purchases and iOS requirement there is nothing between them.

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

## The numbers

| Metric | Letter Tracking System | KeyMail |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | — |
| Update frequency | Every 11 months | — |
| Size | 47 MB | 43 MB |
| Requires iOS | **14.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [GCCloud Info System Private Limited](https://appshunter.io/developer/1559340757) | [ARKA Investments LLC](https://appshunter.io/developer/1880511139) |

## What reviewers say

### Letter Tracking System

[App page](https://appshunter.io/ios/app/letter-tracking-system/id6743742291)

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

**In-app purchases:** none


### KeyMail

[App page](https://appshunter.io/ios/app/keymail/id6759759873)

**In-app purchases:** none


## Frequently asked questions

### Is Letter Tracking System free?

Letter Tracking System is free to download, with no in-app purchases.

### Is KeyMail free?

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

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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.*