# Missing Num vs Find Missing in Subtraction

The clearest difference is in-app purchases: Missing Num at none against Find Missing in Subtraction's 1. Missing Num also leads on update cadence (every 11 months vs every 121 months). Find Missing in Subtraction's advantage is ads (none vs shown) and iOS requirement (10.0 vs 15.6). On price and device support there is nothing between them.

Both are free to download. Find Missing in Subtraction sells 1 one-off in-app purchase. Missing Num asks for nothing beyond the download.

Missing Num ships an update every 11 months, Find Missing in Subtraction every 121 months. The most recent releases landed on September 10, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | Missing Num | Find Missing in Subtraction |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/find-missing-in-subtraction/id1078068895/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 11 months** | Every 121 months |
| Monetization | — | Free |
| Size | 8 MB | 110 MB |
| Requires iOS | 15.6 | **10.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Yasuyoshi Ota](https://appshunter.io/developer/1500357652) | [Blooming Kids Software LLC](https://appshunter.io/developer/501015942) |

## 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


### Find Missing in Subtraction

[App page](https://appshunter.io/ios/app/find-missing-in-subtraction/id1078068895)

This educational app helps children practice subtraction skills. It presents problems with missing numbers and offers interactive feedback. Users can customize settings like problem layout and number selection, and track progress through detailed reports.

**Highlights:** Interactive subtraction problems, Customizable problem layout (vertical/horizontal), Optional answer prompts, Random number generation, Congratulatory animations, Progress tracking and reports, Test mode

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Finding Missing Number in Subtraction | $3.99 | one-time |


## Frequently asked questions

### Is Missing Num free?

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

### Is Find Missing in Subtraction free?

Find Missing in Subtraction is free to download, with in-app purchases available.

### Do Missing Num or Find Missing in Subtraction have ads?

Missing Num shows ads; Find Missing in Subtraction does not.

### Which is updated more often, Missing Num or Find Missing in Subtraction?

Missing Num ships an update every 11 months, and Find Missing in Subtraction every 121 months. Most recently, Missing Num was updated on September 10, 2026 and Find Missing in Subtraction on June 1, 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.*