# Find Missing in Subtraction vs PSSI Mobile App

The clearest difference is in-app purchases: PSSI Mobile App at none against Find Missing in Subtraction's 1. Find Missing in Subtraction's advantage is device support. On price and iOS requirement there is nothing between them.

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

## The numbers

| Metric | Find Missing in Subtraction | PSSI Mobile App |
| --- | --- | --- |
| 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 | Yes | **No** |
| Ads | No | — |
| Update frequency | Every 121 months | — |
| Monetization | Free | — |
| Size | 110 MB | 84 MB |
| Requires iOS | 10.0 | 10.0 |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 4+ | 17+ |
| Developer | [Blooming Kids Software LLC](https://appshunter.io/developer/501015942) | [WELA.ONLINE CORP.](https://appshunter.io/developer/1621972441) |

## 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 |


### PSSI Mobile App

[App page](https://appshunter.io/ios/app/pssi-mobile-app/id6502294430)

**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 PSSI Mobile App free?

PSSI Mobile App is free to download, with no in-app purchases.

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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.*