# Missing Num vs Classroom Spinners

The clearest difference is price: Missing Num at Free against Classroom Spinners's $0.99. Classroom Spinners's advantage is ads (none vs shown) and iOS requirement (12.0 vs 15.6). On update cadence, in-app purchases and device support there is nothing between them.

Missing Num is free to download; Classroom Spinners costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Missing Num ships an update every 11 months, Classroom Spinners every 21 months. The most recent releases landed on October 29, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Missing Num | Classroom Spinners |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 11 months** | Every 21 months |
| Size | 8 MB | 7 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPad, Apple TV |
| Age rating | 4+ | 4+ |
| Developer | [Yasuyoshi Ota](https://appshunter.io/developer/1500357652) | [Ventura Educational Systems](https://appshunter.io/developer/371324172) |

## What reviewers say

### Missing Num

[App page](https://appshunter.io/ios/app/missing-num/id868026877)

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

**In-app purchases:** none


### Classroom Spinners

[App page](https://appshunter.io/ios/app/classroom-spinners/id1143588037)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Missing Num free?

Missing Num is free to download, with no in-app purchases.

### Is Classroom Spinners free?

Classroom Spinners costs $0.99, with no in-app purchases.

### Do Missing Num or Classroom Spinners have ads?

Missing Num shows ads; Classroom Spinners does not.

### Which is updated more often, Missing Num or Classroom Spinners?

Missing Num ships an update every 11 months, and Classroom Spinners every 21 months. Most recently, Missing Num was updated on October 29, 2026 and Classroom Spinners on October 26, 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.*