# Letter Tracking System vs Mind Ace

The clearest difference is in-app purchases: Letter Tracking System at none against Mind Ace's 2. Letter Tracking System also leads on device support (3 vs 1) and iOS requirement (14.0 vs 17.0). On price and ads there is nothing between them.

Both are free to download. Mind Ace sells 2 in-app purchases, starting at $0.99 per 7 days. Letter Tracking System asks for nothing beyond the download.

## The numbers

| Metric | Letter Tracking System | Mind Ace |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 11 months | — |
| Size | 47 MB | 38 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [GCCloud Info System Private Limited](https://appshunter.io/developer/1559340757) | [ProductiveTap](https://appshunter.io/developer/430553438) |

## 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


### Mind Ace

[App page](https://appshunter.io/ios/app/mind-ace-mind-map-brainstorm/id6758263202)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Weekly | $0.99 | per 7 days |
| Premium Yearly | $9.99 | per year |


## Frequently asked questions

### Is Letter Tracking System free?

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

### Is Mind Ace free?

Mind Ace is free to download, with in-app purchases available.

### Do Letter Tracking System or Mind Ace have ads?

Neither Letter Tracking System nor Mind Ace shows ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*