Hypotenuse vs MoNo
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Hypotenuse
Explore the meditative art of geometry using Augmented Reality or your photo library. Construct polygons from basic shapes and discover the mathematical patterns in nature and the built world. Learn the language of geometry through interactive visual exploration.
- Augmented Reality geometry exploration
- Photo Library integration for geometric patterns
- Construct polygons from circles and lines
- Discover geometric patterns in nature
- Learn about mathematical language of the universe
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Discover the relaxing and meditative art of geometry with Hypotenuse and experience the mysterious mathematical language of the universe. With the same simple rules of compass and straightedge, you can now explore the geometric patterns found in nature and in our built environment using Augmented Reality and/or images from your Photo Library. Learn how to construct polygons from just circles and lines; from the triangle to the twelve-sided dodecagon. Geometry is everywhere! Hypotenuse helps you find it.
MoNo
Transform your color photos into monochrome images with a retro, Game Boy Pocket Camera aesthetic. This application offers a unique visual style for your pictures.
- Color to monochrome conversion
- Retro Game Boy Pocket Camera style
- Image transformation
- Unique visual filters
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This app converts color images to monochrome. It transforms your photos to look like they were taken with the Game Boy Pocket Camera.
Screenshots
Verdict
The clearest difference is review sentiment: MoNo at 100% against Hypotenuse's 50%. MoNo also leads on ratings volume (6 vs 1) and price ($0.99 vs $2.99). Hypotenuse's advantage is update cadence (every 6 weeks vs every 25 months) and rating (5.0 vs 4.8). On ads, in-app purchases, monetization model and chart position 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
Hypotenuse costs $2.99 and MoNo $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Hypotenuse holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: MoNo has 6 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 50% of Hypotenuse's written reviews are positive against 100% of MoNo's, so the app with the better star average is not the one people write more warmly about.
Hypotenuse ships an update every 6 weeks, MoNo every 25 months. The most recent releases landed on October 3, 2026 and October 8, 2026 respectively.
| Parameter | Hypotenuse | MoNo |
|---|---|---|
| Price | $2.99 | $0.99 — better |
| Rating | 5.0 (1 ratings) — better | 4.8 (6 ratings) |
| Positive reviews | 50.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 1 | 6 — better |
| Update frequency | Every 6 weeks — better | Every 25 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Best chart rank | #138 — better | #193 |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 18.0 | 14.0 — better |
| Further details — not scored | ||
| Size | 7 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | James Gilmartin | Kouichi INAFUKU |
Customer experience
Hypotenuse
MoNo
In-app purchases
Hypotenuse
No in-app purchases
MoNo
No in-app purchases
