Pythagoras HD vs Fibonacci Clock by simple ver
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Pythagoras HD
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.
- Visual proofs of Pythagorean Theorem
- Interactive geometric puzzles
- Formula-free learning
- Engaging educational experience
- iPad compatibility
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A fascinating, beautiful and educating puzzle! Moreover, all this is a proof of the celebrated Pythagorean Theorem. Wait.. Several proofs! Now you can easily prove it without formulas!
Fibonacci Clock by simple ver
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.
- Fibonacci sequence time display
- Color-coded hour and minute
- Tap for hints
- Adjustable interval flick gestures
- Educational math concept
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This is a clock. but too difficult to read. hour = red + blue minute = (green + blue) * 5 if you tap , you find this hint. if you up or down flick, you can change an interval.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Pythagoras HD | Fibonacci Clock by simple ver |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 1.0 (1 ratings) | 4.0 (6 ratings) — better |
| Positive reviews | 42.9% of reviews | 71.4% of reviews — better |
| Number of ratings | 1 | 6 — better |
| Update frequency | Every 24 months | Fortnightly — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Paid | Ad-supported — better |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 12.0 | 12.0 |
| Further details — not scored | ||
| Size | 10 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Roman Koksharov | YUKI HAYANO |
Customer experience
Pythagoras HD
Fibonacci Clock by simple ver
In-app purchases
Pythagoras HD
No in-app purchases
Fibonacci Clock by simple ver
No in-app purchases
Questions
Is Pythagoras HD free?
Is Fibonacci Clock by simple ver free?
Which has better reviews, Pythagoras HD or Fibonacci Clock by simple ver?
Do Pythagoras HD or Fibonacci Clock by simple ver have ads?
Which is updated more often, Pythagoras HD or Fibonacci Clock by simple ver?
Other comparisons
