# Find Missing in Subtraction vs Learning Earth Science

The clearest difference is price: Find Missing in Subtraction at Free against Learning Earth Science's $1.99. Learning Earth Science's advantage is in-app purchases (none vs 1) and update cadence (every 39 months vs every 121 months). On ads, device support and iOS requirement there is nothing between them.

Find Missing in Subtraction is free to download; Learning Earth Science costs $1.99 up front. Find Missing in Subtraction sells 1 one-off in-app purchase. Learning Earth Science asks for nothing beyond the download.

Find Missing in Subtraction ships an update every 121 months, Learning Earth Science every 39 months. The most recent releases landed on October 4, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Find Missing in Subtraction | Learning Earth Science |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| 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 | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 121 months | **Every 39 months** |
| Monetization | Free | — |
| Size | 110 MB | 20 MB |
| Requires iOS | **10.0** | 11.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Blooming Kids Software LLC](https://appshunter.io/developer/501015942) | [Coskun CAKIR](https://appshunter.io/developer/482066275) |

## 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 |


### Learning Earth Science

[App page](https://appshunter.io/ios/app/learning-earth-science/id1386721116)

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

**In-app purchases:** none


## Frequently asked questions

### Is Find Missing in Subtraction free?

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

### Is Learning Earth Science free?

Learning Earth Science costs $1.99, with no in-app purchases.

### Do Find Missing in Subtraction or Learning Earth Science have ads?

Neither Find Missing in Subtraction nor Learning Earth Science shows ads.

### Which is updated more often, Find Missing in Subtraction or Learning Earth Science?

Find Missing in Subtraction ships an update every 121 months, and Learning Earth Science every 39 months. Most recently, Find Missing in Subtraction was updated on October 4, 2026 and Learning Earth Science on October 5, 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.*