# Pythagoras HD vs Fibonacci Clock by simple ver

The clearest difference is price: Fibonacci Clock by simple ver at Free against Pythagoras HD's $0.99. Fibonacci Clock by simple ver also leads on rating (4.0 vs 1.0) and update cadence (fortnightly vs every 24 months). Pythagoras HD's advantage is ads (none vs shown). On in-app purchases and iOS requirement there is nothing between them.

Fibonacci Clock by simple ver is free to download; Pythagoras HD costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Fibonacci Clock by simple ver holds the better App Store score, 4.0 against 1.0. That said, the two scores are not equally well evidenced: Fibonacci Clock by simple ver has 6 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 43% of Pythagoras HD's written reviews are positive against 71% of Fibonacci Clock by simple ver's.

Pythagoras HD ships an update every 24 months, Fibonacci Clock by simple ver fortnightly. Both last shipped on November 1, 2026.

## The numbers

| Metric | Pythagoras HD | Fibonacci Clock by simple ver |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/pythagoras-hd/id404432708/reviews) | **[4.0 (6 ratings)](https://appshunter.io/ios/app/fibonacci-clock-by-simple-ver/id996123572/reviews)** |
| Number of ratings | 1 | **6** |
| Positive reviews | 42.9% of reviews | **71.4% of reviews** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 24 months | **Fortnightly** |
| Monetization | Paid | **Ad-supported** |
| Size | 10 MB | 3 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Roman Koksharov](https://appshunter.io/developer/700716922) | [YUKI HAYANO](https://appshunter.io/developer/874819360) |

## What reviewers say

### Pythagoras HD

[App page](https://appshunter.io/ios/app/pythagoras-hd/id404432708)

Explore the Pythagorean Theorem through interactive puzzles and visual proofs. This educational app offers a unique, formula-free approach to understanding geometry. It's designed to make learning engaging and accessible.

**Highlights:** Visual proofs of Pythagorean Theorem, Interactive geometric puzzles, Formula-free learning, Engaging educational experience, iPad compatibility

**Features:** macOS Compatibility

**In-app purchases:** none


### Fibonacci Clock by simple ver

[App page](https://appshunter.io/ios/app/fibonacci-clock-by-simple-ver/id996123572)

This app displays time using a unique color-coded system based on the Fibonacci sequence. It's designed to be a challenging yet educational way to tell time, with hints available and adjustable intervals.

**Highlights:** Fibonacci sequence time display, Color-coded hour and minute, Tap for hints, Adjustable interval flick gestures, Educational math concept

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Pythagoras HD free?

Pythagoras HD costs $0.99, with no in-app purchases.

### Is Fibonacci Clock by simple ver free?

Fibonacci Clock by simple ver is free to download, with no in-app purchases.

### Which has better reviews, Pythagoras HD or Fibonacci Clock by simple ver?

Fibonacci Clock by simple ver is rated higher. Pythagoras HD averages 1.0 out of 5 from 1 ratings, while Fibonacci Clock by simple ver averages 4.0 from 6 ratings.

### Do Pythagoras HD or Fibonacci Clock by simple ver have ads?

Fibonacci Clock by simple ver shows ads; Pythagoras HD does not.

### Which is updated more often, Pythagoras HD or Fibonacci Clock by simple ver?

Pythagoras HD ships an update every 24 months, and Fibonacci Clock by simple ver fortnightly. Most recently, Pythagoras HD was updated on November 1, 2026 and Fibonacci Clock by simple ver on November 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.*