# Find Missing in Subtraction vs Number Blast

The clearest difference is monetization model: Find Missing in Subtraction at free against Number Blast's free with in-app purchases. Find Missing in Subtraction also leads on iOS requirement (10.0 vs 13.0). Number Blast's advantage is update cadence (every 39 months vs every 121 months). On price, review sentiment, ads and in-app purchases there is nothing between them.

Both are free to download. Find Missing in Subtraction sells 1 one-off in-app purchase and Number Blast sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Find Missing in Subtraction ships an update every 121 months, Number Blast every 39 months. Both last shipped on November 2, 2026.

## The numbers

| Metric | Find Missing in Subtraction | Number Blast |
| --- | --- | --- |
| 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 | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 121 months | **Every 39 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 110 MB | 30 MB |
| Requires iOS | **10.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Blooming Kids Software LLC](https://appshunter.io/developer/501015942) | [BrainTrain Inc.](https://appshunter.io/developer/584469134) |

## What reviewers say

### 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 |


### Number Blast

[App page](https://appshunter.io/ios/app/number-blast-memory-trainer/id1208566898)

This educational game helps children aged 5-7 develop memory, attention, and number recognition skills through engaging number sequence challenges. It features adjustable difficulty, a two-player mode, and progress tracking to foster cognitive abilities for school and life.

**Highlights:** Memory and attention training, Number sequence exercises, Adjustable difficulty levels, Two-player mode, Progress tracking and scoring, Kid-safe, no ads or tracking

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Version | $2.99 | one-time |


## Frequently asked questions

### Is Find Missing in Subtraction free?

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

### Is Number Blast free?

Number Blast is free to download, with in-app purchases available.

### Do Find Missing in Subtraction or Number Blast have ads?

Neither Find Missing in Subtraction nor Number Blast shows ads.

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

Find Missing in Subtraction ships an update every 121 months, and Number Blast every 39 months. Most recently, Find Missing in Subtraction was updated on November 2, 2026 and Number Blast on November 2, 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.*