# Subtraction Math Master 2 vs Ball Tracing

The clearest difference is in-app purchases: Ball Tracing at none against Subtraction Math Master 2's 1. Ball Tracing also leads on update cadence (every 8 months vs every 34 months). Subtraction Math Master 2's advantage is ads (none vs shown) and iOS requirement (8.0 vs 15.0). On price and device support there is nothing between them.

Both are free to download. Subtraction Math Master 2 sells 1 one-off in-app purchase. Ball Tracing asks for nothing beyond the download.

Subtraction Math Master 2 ships an update every 34 months, Ball Tracing every 8 months. The most recent releases landed on October 21, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Subtraction Math Master 2 | Ball Tracing |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.0 (2 ratings)](https://appshunter.io/ios/app/subtraction-math-master-2/id806133567/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 34 months | **Every 8 months** |
| Monetization | Free with in-app purchases | — |
| Size | 4 MB | 86 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Peter Li](https://appshunter.io/developer/424298074) | [Hirokazu Uno](https://appshunter.io/developer/1570016990) |

## What reviewers say

### Subtraction Math Master 2

[App page](https://appshunter.io/ios/app/subtraction-math-master-2/id806133567)

This game challenges players to improve their subtraction speed and mental math skills. It features a "LEVEL UP" system that increases difficulty with correct answers and includes leaderboards and achievements for competitive play.

**Highlights:** 2-minute subtraction games, LEVEL UP difficulty system, Leaderboards and achievements, Intuitive user interface, Share results globally

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| REMOVE ADS (Subtraction 2) | $0.99 | one-time |


### Ball Tracing

[App page](https://appshunter.io/ios/app/ball-tracing-matching-game/id6476064093)

**In-app purchases:** none


## Frequently asked questions

### Is Subtraction Math Master 2 free?

Subtraction Math Master 2 is free to download, with in-app purchases available.

### Is Ball Tracing free?

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

### Do Subtraction Math Master 2 or Ball Tracing have ads?

Ball Tracing shows ads; Subtraction Math Master 2 does not.

### Which is updated more often, Subtraction Math Master 2 or Ball Tracing?

Subtraction Math Master 2 ships an update every 34 months, and Ball Tracing every 8 months. Most recently, Subtraction Math Master 2 was updated on October 21, 2026 and Ball Tracing on October 25, 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.*