# Terrific Triangle vs Mental Math

The clearest difference is price: Terrific Triangle at Free against Mental Math's $2.99. Terrific Triangle also leads on iOS requirement (12.0.0 vs 16.6). Mental Math's advantage is update cadence (fortnightly vs every 10 months). On ads, in-app purchases and device support there is nothing between them.

Terrific Triangle is free to download; Mental Math costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Terrific Triangle ships an update every 10 months, Mental Math fortnightly. The most recent releases landed on June 1, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Terrific Triangle | Mental Math |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | **[4.0 (5 ratings)](https://appshunter.io/ios/app/terrific-triangle/id1341995236/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Fortnightly** |
| Monetization | Free | — |
| Size | 32 MB | 6 MB |
| Requires iOS | **12.0.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Elementary Software](https://appshunter.io/developer/525377644) | [波 许](https://appshunter.io/developer/1779951649) |

## What reviewers say

### Terrific Triangle

[App page](https://appshunter.io/ios/app/terrific-triangle/id1341995236)

Practice math fact families for addition, subtraction, multiplication, and division. This educational tool offers individual fact practice with a score and adjustable difficulty, including an optional timer. It's a free, ad-free way to master number relationships.

**Highlights:** Fact family practice, Addition/subtraction drills, Multiplication/division drills, Adjustable difficulty, Optional timer, Running score

**Features:** macOS Compatibility

**In-app purchases:** none


### Mental Math

[App page](https://appshunter.io/ios/app/mental-math-speed-trainer/id6754240200)

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

**In-app purchases:** none


## Frequently asked questions

### Is Terrific Triangle free?

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

### Is Mental Math free?

Mental Math costs $2.99, with no in-app purchases.

### Do Terrific Triangle or Mental Math have ads?

Neither Terrific Triangle nor Mental Math shows ads.

### Which is updated more often, Terrific Triangle or Mental Math?

Terrific Triangle ships an update every 10 months, and Mental Math fortnightly. Most recently, Terrific Triangle was updated on June 1, 2026 and Mental Math on September 23, 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.*