# Subtraction Mathematics vs Grace

The clearest difference is in-app purchases: Grace at none against Subtraction Mathematics's 1. Grace also leads on device support (4 vs 2). On price, ads and iOS requirement there is nothing between them.

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

## The numbers

| Metric | Subtraction Mathematics | Grace |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (27 ratings)](https://appshunter.io/ios/app/subtraction-mathematics/id1660955330/reviews)** | — |
| Number of ratings | **27** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | — |
| Monetization | Free with in-app purchases | — |
| Size | 172 MB | 52 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Apple TV** |
| Age rating | 4+ | 4+ |
| Developer | [PROGRAMIS PRIME LLC](https://appshunter.io/developer/1051843545) | [Grace Baptist Church of Cartersville, INC](https://appshunter.io/developer/1896013987) |

## What reviewers say

### Subtraction Mathematics

[App page](https://appshunter.io/ios/app/subtraction-mathematics/id1660955330)

This math app teaches children multi-digit subtraction with step-by-step guidance and positive reinforcement. It adapts to the student's learning pace, offering practice for beginners and review for older students. Features include AI handwriting recognition and progress monitoring for parents and teachers.

**Highlights:** Multi-digit subtraction with borrowing, Step-by-step instructions, AI handwriting recognition, Progress monitoring with color-coded feedback, Customizable digit combinations, Encouragement-based learning

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Get All Features | $3.99 | one-time |


### Grace

[App page](https://appshunter.io/ios/app/grace-cartersville/id6765623670)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Subtraction Mathematics free?

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

### Is Grace free?

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

### Do Subtraction Mathematics or Grace have ads?

Neither Subtraction Mathematics nor Grace shows ads.

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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.*