# Number Formation vs Trace & Play

The clearest difference is in-app purchases: Number Formation at none against Trace & Play's 1. Number Formation also leads on iOS requirement (11.0 vs 17.0). Trace & Play's advantage is update cadence (monthly vs every 36 months). On price, ads and device support there is nothing between them.

Both are free to download. Trace & Play sells 1 one-off in-app purchase. Number Formation asks for nothing beyond the download.

Number Formation ships an update every 36 months, Trace & Play monthly. The most recent releases landed on October 9, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Number Formation | Trace & Play |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 36 months | **Monthly** |
| Size | 13 MB | 1 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Yellow Door Ltd](https://appshunter.io/developer/992076525) | [Don Nguyen](https://appshunter.io/developer/1528881188) |

## What reviewers say

### Number Formation

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Trace & Play

[App page](https://appshunter.io/ios/app/trace-and-play/id6784865367)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Everything | $1.99 | one-time |


## Frequently asked questions

### Is Number Formation free?

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

### Is Trace & Play free?

Trace & Play is free to download, with in-app purchases available.

### Do Number Formation or Trace & Play have ads?

Neither Number Formation nor Trace & Play shows ads.

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

Number Formation ships an update every 36 months, and Trace & Play monthly. Most recently, Number Formation was updated on October 9, 2026 and Trace & Play on October 24, 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.*