Geometry!! vs calcMod
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Geometry!!
Learn geometry with interactive 2D and 3D visualizations. This app offers automatic calculations for area, perimeter, and volume, along with trigonometric values. It's designed for students, teachers, and math enthusiasts to make learning math engaging and accessible.
- Interactive 3D visualizations
- 2D and 3D shape details
- Automatic area, perimeter, volume calculations
- Trigonometric values
- Modern, optimized interface
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Geometry – Learn Geometry in Practice Discover geometry in a modern, interactive way! Perfect for students, teachers, and math enthusiasts. Master 2D and 3D shapes with clear visuals, automatic calculations, and an intuitive interface. What’s New: New 3D Shapes: Explore solids and their properties. Area, Perimeter & Volume: Automatic calculations for all shapes. Fully compatible with iOS 26: Faster, smoother performance. Features: Interactive 3D visualizations. Detailed drawings of flat and solid figures. Instant calculations: area, perimeter, and volume. Trigonometric values: sine, cosine, tangent, cotangent. Modern interface optimized for the latest iOS. Geometry makes learning math simple and enjoyable — at school, at home, or on the go!
calcMod
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What are all the digits of the factorial of 69 and how many digits ? What is the gogol number ? How many integers of the form 10^n+1 are prime ? (like 101) Want to know if a big integer is prime ? The change mod function indicates when the number is prime. Want to know the divisors of an integer ? A prime divisor has no inverse modulo this integer. This is a modulo calculator overpowering almost limitless! (only display is limited !) With modulo gogol, calculus are exact until 100 digits ! The "n!" button calculates the factorial of an integer from 0 to 2000. Factorial are limited to factorial of 2000. The "change modulo" (change modulo) function indicates when the modulo is prime. There are no limit to the modulo except the display. The "modulo gogol" button set a modulo to 10^100 (gogol number). You can stoke one number and recall it when you want. The "Mod" operation indicates the residue modulo N. The "pow" function allow modular exponentiation (as + - *) The "INV" function calculates the inverse of an integer modulo N. This app is intended for both mathematics teachers and/or their students, or if you are interested in the beauty of numbers. Enjoy calcMod-Blk ! Les commentaires sont disponibles en français (réglages).
Screenshots
Verdict
The clearest difference is price: Geometry!! at Free against calcMod's $1.99. Geometry!! also leads on update cadence (every 7 months vs every 36 months). calcMod's advantage is in-app purchases (none vs 2) and ads (none vs shown). On device support 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
Geometry!! is free to download; calcMod costs $1.99 up front. Geometry!! sells 2 in-app purchases, starting at $0.99 per year. calcMod asks for nothing beyond the download.
Geometry!! ships an update every 7 months, calcMod every 36 months. The most recent releases landed on September 28, 2026 and October 3, 2026 respectively.
| Parameter | Geometry!! | calcMod |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 4.5 (56 ratings) — better | — |
| Positive reviews | 66.7% of reviews | — |
| Number of ratings | 56 — better | — |
| Update frequency | Every 7 months — better | Every 36 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 26.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 57 MB | 1 MB |
| Age rating | 9+ | 4+ |
| Developer | Zbigniew Osada | Alain Cardinaux |
In-app purchases
Geometry!!
- Yearly$0.991 Year
- Lifetime$1.99
calcMod
No in-app purchases
Questions
Is Geometry!! free?
Is calcMod free?
Do Geometry!! or calcMod have ads?
Which is updated more often, Geometry!! or calcMod?
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