Solving Pythagoras PRO vs ReadBay
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Solving Pythagoras PRO
Easily calculate the sides of a right-angled triangle using the Pythagorean theorem. Input two sides to find the third, with all calculations saved in a history. Supports fractions and provides clear solution steps.
- Pythagorean theorem calculations
- Calculate any of the three sides
- Fraction input support
- Calculation history
- Clear solution steps
- Manual history sorting and deletion
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The calculation of a right-angled triangle is no longer a problem. All edges are calculated with the Pythagorean theorem. If you enter the value of two edges, the third is calculated. All calculations are stored in a history. The final solution can be shared. [Contents] - the edges a, b and c can be entered - calculation of the third edge with the Pythagorean theorem - history function that saves input - complete solution - the entering of fractions is supported - no ads! [ Application ] - there are 3 fields for entering the values using a modified keyboard - if you have not entered enough values, the text fields are highlighted in yellow - if you have entered invalid values, the corresponding text field is highlighted in red - you can switch between the solution, input view and history by swiping and / or touching the buttons - the entries in the history can be deleted or sorted manually - if you select an entry in the history, it will be loaded automatically for the calculation - the entire history can be deleted by pressing a key
ReadBay
Access concise summaries and audio versions of bestselling books in under 15 minutes. Master key insights from business, self-help, and personal development titles for faster learning and habit building.
- 15-minute book summaries
- Audiobook summaries
- Offline reading
- Progress tracking
- Habit building challenges
- Bookmark favorite notes
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Book Summary & Audiobook App - Learn in 15 Minutes Master key insights from bestselling self help, business books, and personal development titles with ReadBay's quick book summaries! Our speed reading approach delivers professional development content faster than Blinkist or Headway. Why ReadBay Beats the Competition: 15 minute reads - Perfect for daily learning Audiobook summaries for hands-free motivation Offline reading - Learn anywhere, anytime Productivity tools with progress tracking Habit building challenges and goals Popular Categories: Leadership books, Business books, Self Help, Productivity, Psychology, Money & Investing, Professional development, Communication Perfect for Quick Book Summaries: Busy professionals seeking key insights Students wanting speed reading solutions Anyone building daily learning habits Commuters maximizing time with audiobook content Smart Learning Features: Bookmark favorite book notes Set habit building challenges Learn faster with audio mode Motivation through progress tracking Start your learning journey with FREE book summaries! Website: https://www.growthmindapps.com Terms: https://www.growthmindapps.com/terms Privacy: https://www.growthmindapps.com/privacy
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Verdict
The clearest difference is price: ReadBay at Free against Solving Pythagoras PRO's $1.99. ReadBay also leads on rating (4.8 vs 4.2) and update cadence (every 10 days vs every 5 weeks). Solving Pythagoras PRO's advantage is in-app purchases (none vs 4). On ads, device support 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
ReadBay is free to download; Solving Pythagoras PRO costs $1.99 up front. ReadBay sells 4 in-app purchases, starting at $4.99 per month. Solving Pythagoras PRO asks for nothing beyond the download.
ReadBay holds the better App Store score, 4.8 against 4.2. That said, the two scores are not equally well evidenced: ReadBay has 239 ratings behind it against 35, so its average is the more settled of the two. Written reviews point the same way: 71% of Solving Pythagoras PRO's written reviews are positive against 85% of ReadBay's.
Solving Pythagoras PRO ships an update every 5 weeks, ReadBay every 10 days. The most recent releases landed on October 21, 2026 and October 23, 2026 respectively.
| Parameter | Solving Pythagoras PRO | ReadBay |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | 4.2 (35 ratings) | 4.8 (239 ratings) — better |
| Positive reviews | 71.4% of reviews | 84.5% of reviews — better |
| Number of ratings | 35 | 239 — better |
| Update frequency | Every 5 weeks | Every 10 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 179 MB | 60 MB |
| Age rating | 4+ | 17+ |
| Developer | Glindemann, Sennoun, Langer GbR | Bange Sabastine Hwonyi |
Customer experience
Solving Pythagoras PRO
ReadBay
Bugs and requests
Solving Pythagoras PRO
Not enough reviews yet to summarise bugs or requests.
ReadBay
Reported bugs
2 issues- Purchased lifetime subscription not accessible on new device
- Identical summaries for different books
Requested features
3 requests- Support for French books
- Ability to share summaries to Kindle
- More language options (e.g., Chinese)
In-app purchases
Solving Pythagoras PRO
No in-app purchases
ReadBay
- Monthly Pro Membership$4.991 Month
- Pro Annual Membership$19.991 Year
- Yearly Pro Membership3 Days trial$24.991 Year
- Lifetime Membership$39.99
Questions
Is Solving Pythagoras PRO free?
Is ReadBay free?
Which has better reviews, Solving Pythagoras PRO or ReadBay?
Do Solving Pythagoras PRO or ReadBay have ads?
Which is updated more often, Solving Pythagoras PRO or ReadBay?
Other comparisons
