# Pythagorean Calculator vs Dyslexia .abc

The clearest difference is review sentiment: Dyslexia .abc at 100% against Pythagorean Calculator's 33%. Dyslexia .abc also leads on iOS requirement (15.0 vs 26.2). Pythagorean Calculator's advantage is price ($0.99 vs $1.99). On update cadence, ads, in-app purchases and monetization model there is nothing between them.

Pythagorean Calculator costs $0.99 and Dyslexia .abc $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Pythagorean Calculator ships an update every 33 months, Dyslexia .abc every 31 months. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Pythagorean Calculator | Dyslexia .abc |
| --- | --- | --- |
| Price | **$0.99** | $1.99 |
| Rating | **[3.5 (6 ratings)](https://appshunter.io/ios/app/pythagorean-calculator/id495387401/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 33.3% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 33 months | **Every 31 months** |
| Monetization | Paid | Paid |
| Size | 3 MB | 1 MB |
| Requires iOS | 26.2 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [JTM](https://appshunter.io/developer/491099581) | [Pierre Stanislas](https://appshunter.io/developer/1261009329) |

## What reviewers say

### Pythagorean Calculator

[App page](https://appshunter.io/ios/app/pythagorean-calculator/id495387401)

Easily calculate any missing side of a right triangle. This user-friendly tool has the Pythagorean theorem formula built-in, requiring only the two known sides to find the third.

**Highlights:** Calculate missing triangle sides, Built-in Pythagorean theorem formula, User-friendly interface, Supports iPhone and iPad

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

**In-app purchases:** none


### Dyslexia .abc

[App page](https://appshunter.io/ios/app/dyslexia-abc/id6449745240)

This extension transforms webpages into a dyslexia-friendly format. It offers customizable fonts, adjustable text backgrounds for reduced eye strain, and font style choices to enhance online reading accessibility.

**Highlights:** Dyslexia-friendly webpage transformation, OpenDyslexic font support, Adjustable text background contrast, Customizable font styles (regular, bold, italic), Reduced eye strain, Improved reading focus

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

**In-app purchases:** none


## Frequently asked questions

### Is Pythagorean Calculator free?

Pythagorean Calculator costs $0.99, with no in-app purchases.

### Is Dyslexia .abc free?

Dyslexia .abc costs $1.99, with no in-app purchases.

### Do Pythagorean Calculator or Dyslexia .abc have ads?

Neither Pythagorean Calculator nor Dyslexia .abc shows ads.

### Which is updated more often, Pythagorean Calculator or Dyslexia .abc?

Pythagorean Calculator ships an update every 33 months, and Dyslexia .abc every 31 months. Most recently, Pythagorean Calculator was updated on November 6, 2026 and Dyslexia .abc on November 3, 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.*