# Isosceles Triangle PRO vs Extra Math

The clearest difference is update cadence: Extra Math at every 3 days against Isosceles Triangle PRO's monthly. Extra Math also leads on price ($0.99 vs $2.99). Isosceles Triangle PRO's advantage is iOS requirement (15.0 vs 17.5). On ads, in-app purchases and device support there is nothing between them.

Isosceles Triangle PRO costs $2.99 and Extra Math $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Isosceles Triangle PRO ships an update monthly, Extra Math every 3 days. The most recent releases landed on September 17, 2026 and January 1, 2026 respectively.

## The numbers

| Metric | Isosceles Triangle PRO | Extra Math |
| --- | --- | --- |
| Price | $2.99 | **$0.99** |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/isosceles-triangle-pro/id1568944096/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 days** |
| Monetization | Paid | — |
| Size | 179 MB | 13 MB |
| Requires iOS | **15.0** | 17.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Glindemann, Sennoun, Langer GbR](https://appshunter.io/developer/1024972809) | [jsdf, LLC](https://appshunter.io/developer/419265004) |

## What reviewers say

### Isosceles Triangle PRO

[App page](https://appshunter.io/ios/app/isosceles-triangle-pro/id1568944096)

Calculate all properties of an isosceles triangle, whether acute or obtuse. Input known values to see formulas and results. Supports decimals, fractions, and step-by-step solutions with history saving and sharing.

**Highlights:** Calculate all isosceles triangle quantities, Display formulas for calculations, Supports acute and obtuse triangles, Handles decimals and fractions, Step-by-step solution display, History function for saved calculations, Adjustable decimal places

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

**In-app purchases:** none


### Extra Math

[App page](https://appshunter.io/ios/app/extra-math/id6670766648)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Isosceles Triangle PRO free?

Isosceles Triangle PRO costs $2.99, with no in-app purchases.

### Is Extra Math free?

Extra Math costs $0.99, with no in-app purchases.

### Do Isosceles Triangle PRO or Extra Math have ads?

Neither Isosceles Triangle PRO nor Extra Math shows ads.

### Which is updated more often, Isosceles Triangle PRO or Extra Math?

Isosceles Triangle PRO ships an update monthly, and Extra Math every 3 days. Most recently, Isosceles Triangle PRO was updated on September 17, 2026 and Extra Math on January 1, 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.*