# Trace Letter Level 12 vs SimplePDF Reader & Viewer

The clearest difference is in-app purchases: SimplePDF Reader & Viewer at none against Trace Letter Level 12's 2. SimplePDF Reader & Viewer also leads on update cadence (every 3 months vs every 17 months). Trace Letter Level 12's advantage is ads (none vs shown) and iOS requirement (6.0 vs 13.0). On price and device support there is nothing between them.

Both are free to download. Trace Letter Level 12 sells 2 one-off in-app purchases. SimplePDF Reader & Viewer asks for nothing beyond the download.

Trace Letter Level 12 ships an update every 17 months, SimplePDF Reader & Viewer every 3 months. The most recent releases landed on October 12, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Trace Letter Level 12 | SimplePDF Reader & Viewer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/trace-letter-level-12/id1143728096/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 17 months | **Every 3 months** |
| Monetization | Free | — |
| Size | 26 MB | 51 MB |
| Requires iOS | **6.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [宁 王](https://appshunter.io/developer/431513082) | [MOBIPOTATO HK LIMITED](https://appshunter.io/developer/1470578867) |

## What reviewers say

### Trace Letter Level 12

[App page](https://appshunter.io/ios/app/trace-letter-level-12/id1143728096)

This app helps children learn to trace and write uppercase letters with guided instruction. It offers customizable features for parents and teachers to track progress and make learning engaging through interactive elements and sound cues.

**Highlights:** Guided letter tracing, Letter sound playback, Multiple pen selections, Finger or pen writing modes, Save and share creations, Progress tracking reports

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ADs | $0.99 | one-time |
| Get All Pens | $0.99 | one-time |


### SimplePDF Reader & Viewer

[App page](https://appshunter.io/ios/app/simplepdf-reader-and-viewer/id6757828734)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Trace Letter Level 12 free?

Trace Letter Level 12 is free to download, with in-app purchases available.

### Is SimplePDF Reader & Viewer free?

SimplePDF Reader & Viewer is free to download, with no in-app purchases.

### Do Trace Letter Level 12 or SimplePDF Reader & Viewer have ads?

SimplePDF Reader & Viewer shows ads; Trace Letter Level 12 does not.

### Which is updated more often, Trace Letter Level 12 or SimplePDF Reader & Viewer?

Trace Letter Level 12 ships an update every 17 months, and SimplePDF Reader & Viewer every 3 months. Most recently, Trace Letter Level 12 was updated on October 12, 2026 and SimplePDF Reader & Viewer on October 5, 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.*