# Subitize This! vs Number Formation

The clearest difference is update cadence: Subitize This! at every 7 months against Number Formation's every 36 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Subitize This! ships an update every 7 months, Number Formation every 36 months. Both last shipped on October 9, 2026.

## The numbers

| Metric | Subitize This! | Number Formation |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/subitize-this/id1125721532/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 7 months** | Every 36 months |
| Monetization | Free | — |
| Size | 36 MB | 13 MB |
| Requires iOS | **10.0** | 11.0 |
| Devices | iPad | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Classroom Focused Software](https://appshunter.io/developer/406741679) | [Yellow Door Ltd](https://appshunter.io/developer/992076525) |

## What reviewers say

### Subitize This!

[App page](https://appshunter.io/ios/app/subitize-this/id1125721532)

This app helps young children aged 4-7 develop their subitizing skills by practicing recognizing quantities from 1 to 5. It offers options for showing patterns in sets of 4, 6, or 8, with a timer and feedback for responses.

**Highlights:** Subitizing practice 1-5 elements, Options for sets of 4, 6, or 8, Includes a timer, Provides feedback on responses, Designed for ages 4-7

**Features:** macOS Compatibility

**In-app purchases:** none


### Number Formation

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Subitize This! free?

Subitize This! is free to download, with no in-app purchases.

### Is Number Formation free?

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

### Do Subitize This! or Number Formation have ads?

Neither Subitize This! nor Number Formation shows ads.

### Which is updated more often, Subitize This! or Number Formation?

Subitize This! ships an update every 7 months, and Number Formation every 36 months. Most recently, Subitize This! was updated on October 9, 2026 and Number Formation on October 9, 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.*