# Number Formation vs Project WET

The clearest difference is device support: Project WET at 3 against Number Formation's 1. On price, update cadence, 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, Project WET every 19 months. The most recent releases landed on November 3, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Number Formation | Project WET |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 36 months | **Every 19 months** |
| Size | 13 MB | 91 MB |
| Requires iOS | 11.0 | 11.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Yellow Door Ltd](https://appshunter.io/developer/992076525) | [Hurix Systems Pvt. Ltd.](https://appshunter.io/developer/429900405) |

## What reviewers say

### Number Formation

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Project WET

[App page](https://appshunter.io/ios/app/project-wet/id1531921970)

**In-app purchases:** none


## Frequently asked questions

### Is Number Formation free?

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

### Is Project WET free?

Project WET is free to download, with no in-app purchases.

### Do Number Formation or Project WET have ads?

Neither Number Formation nor Project WET shows ads.

### Which is updated more often, Number Formation or Project WET?

Number Formation ships an update every 36 months, and Project WET every 19 months. Most recently, Number Formation was updated on November 3, 2026 and Project WET on November 8, 2026.

---

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