# Letter Tracking System vs Blanks

The clearest difference is in-app purchases: Letter Tracking System at none against Blanks's 2. Letter Tracking System also leads on device support (3 vs 1) and iOS requirement (14.0 vs 17.0). Blanks's advantage is update cadence (weekly vs every 11 months). On price and ads there is nothing between them.

Both are free to download. Blanks sells 2 in-app purchases, starting at $19.99 per month. Letter Tracking System asks for nothing beyond the download.

Letter Tracking System ships an update every 11 months, Blanks weekly. The most recent releases landed on September 26, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Letter Tracking System | Blanks |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.5 (125 ratings)](https://appshunter.io/ios/app/blanks-ai-app-builder/id6744576554/reviews)** |
| Number of ratings | — | **125** |
| Positive reviews | — | 62.5% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 11 months | **Weekly** |
| Monetization | — | Free with in-app purchases |
| Size | 47 MB | 58 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) | [Polsia Inc](https://appshunter.io/developer/1857566207) |

## 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


### Blanks

[App page](https://appshunter.io/ios/app/blanks-ai-app-builder/id6744576554)

Create custom mobile applications in minutes using AI, with no coding required. Simply describe your app idea, and the platform will generate a functional app. You can then easily add features, edit designs through chat, and collaborate with others.

**Highlights:** AI-powered app generation, No-code development, Chat-based editing, Collaborative building, Instant app preview, Secure sandbox environment

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Blanks Pro | $19.99 | per month |
| Blanks Pro Yearly | $99.99 | per year |


## Frequently asked questions

### Is Letter Tracking System free?

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

### Is Blanks free?

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

### Do Letter Tracking System or Blanks have ads?

Neither Letter Tracking System nor Blanks shows ads.

### Which is updated more often, Letter Tracking System or Blanks?

Letter Tracking System ships an update every 11 months, and Blanks weekly. Most recently, Letter Tracking System was updated on September 26, 2026 and Blanks on October 12, 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.*