Pitagorín! vs Circle & Sphere
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Pitagorín!
This app assists with mathematical calculations, specifically the Pythagorean theorem and the rule of three. It has been rebuilt from the ground up for improved functionality.
- Pythagorean theorem calculation
- Rule of three calculation
- Rebuilt from scratch
- Educational tool
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App that helps you calculate the Pythagoras theorem and now also simple rule of three is been added! New version rebuilt from scratch.
Circle & Sphere
Instantly solve geometry problems for homework and exams. Calculate circle and sphere properties with step-by-step solutions. Access learning videos and manage your calculations.
- Circle calculations (radius, diameter, circumference, area)
- Sphere calculations (surface area, volume)
- Circular sector calculations
- Step-by-step solutions
- Learning videos
- Solution management
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Do your homework instantly. Prepare for exams without stress. Free, complete step-by-step solutions. Enter your values and calculate: - Circle: radius, diameter, circumference and area - Sphere: surface area and volume - Circular sector: arc length and central angle HOW IT WORKS Enter your values in the correct fields and get started. You receive the solution instantly and can share it with friends or classmates. YOUR PERSONAL DATA We don’t need it. Only anonymized data is collected, for example: - which features are used - how many solutions are generated This helps us improve. We cannot identify you. COSTS Everything is free to use. 24/7 access to your solutions. All solution steps always remain complete. If you need many solutions in a short time, various purchase options are available. EXTRAS - Overview of all measures - all length units - curated learning videos - feedback for incorrect inputs - manage your own solutions - app introduction CONTACT Questions and feedback via Discord or directly in the app review.
Screenshots
Verdict
The clearest difference is price: Circle & Sphere at Free against Pitagorín!'s $0.99. Circle & Sphere also leads on review sentiment (100% vs 67%) and update cadence (every 3 weeks vs every 19 months). Pitagorín!'s advantage is rating (5.0 vs 4.0) and in-app purchases (none vs 8). On ads 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
Circle & Sphere is free to download; Pitagorín! costs $0.99 up front. Circle & Sphere sells 8 one-off in-app purchases. Pitagorín! asks for nothing beyond the download.
Pitagorín! holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 4 respectively. Written reviews complicate that: 67% of Pitagorín!'s written reviews are positive against 100% of Circle & Sphere's, so the app with the better star average is not the one people write more warmly about.
Pitagorín! ships an update every 19 months, Circle & Sphere every 3 weeks. The most recent releases landed on October 10, 2026 and October 18, 2026 respectively.
| Parameter | Pitagorín! | Circle & Sphere |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 5.0 (1 ratings) — better | 4.0 (4 ratings) |
| Positive reviews | 66.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 1 | 4 — better |
| Update frequency | Every 19 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 16.4 | 15.0 — better |
| Further details — not scored | ||
| Size | 2 MB | 180 MB |
| Age rating | 4+ | 4+ |
| Developer | Ivan Cabezon Orjales | Glindemann, Sennoun, Langer GbR |
Customer experience
Pitagorín!
Circle & Sphere
In-app purchases
Pitagorín!
No in-app purchases
Circle & Sphere
- +30 User Tokens$0.29
- +1 Convenience Token / 6h, max. +2$0.59
- +2 Convenience Tokens / 6h, max. +4$0.99
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- +150 User Tokens$0.99
- +300 User Tokens$1.49
- +4 Convenience Tokens / 6h, max. +8$1.59
- Remove Ads$2.99
- Lifetime Access$2.99
Questions
Is Pitagorín! free?
Is Circle & Sphere free?
Which has better reviews, Pitagorín! or Circle & Sphere?
Do Pitagorín! or Circle & Sphere have ads?
Which is updated more often, Pitagorín! or Circle & Sphere?
Other comparisons
