# Number Formation vs Trace ABC

The clearest difference is update cadence: Trace ABC at every 3 months against Number Formation's every 36 months. Trace ABC also leads on device support (3 vs 1). Number Formation's advantage is iOS requirement (11.0 vs 15.0). On price, 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.

Number Formation ships an update every 36 months, Trace ABC every 3 months. The most recent releases landed on November 11, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Number Formation | Trace ABC |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 36 months | **Every 3 months** |
| Size | 13 MB | 23 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Yellow Door Ltd](https://appshunter.io/developer/992076525) | [zhenyu song](https://appshunter.io/developer/1721282851) |

## What reviewers say

### Number Formation

[App page](https://appshunter.io/ios/app/number-formation-us/id1292615040)

**Features:** macOS Compatibility

**In-app purchases:** none


### Trace ABC

[App page](https://appshunter.io/ios/app/trace-abc-phonics-and-write/id6789617977)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Number Formation free?

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

### Is Trace ABC free?

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

### Do Number Formation or Trace ABC have ads?

Neither Number Formation nor Trace ABC shows ads.

### Which is updated more often, Number Formation or Trace ABC?

Number Formation ships an update every 36 months, and Trace ABC every 3 months. Most recently, Number Formation was updated on November 11, 2026 and Trace ABC on November 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.*