Arithmetic Quilts vs Earth Rotation
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Arithmetic Quilts
Explore the visual beauty of mathematical patterns through colorful quilt designs. This app transforms arithmetic and modular arithmetic tables into artistic creations, making abstract concepts tangible and engaging.
- Visualizes addition and multiplication tables
- Assigns colors to numbers for pattern discovery
- Explores modular arithmetic patterns
- Creates quilts from recursive processes
- Combines math and art
Read full descriptionHide full description
Arithmetic Quilts combines mathematics and art. Addition tables, multiplication tables, and tables based on more complex operations are displayed as colorful quilts by assigning a specific color to each positive whole number. This makes it much easier to discover and appreciate the beautiful patterns of mod arithmetic. Quilts defined by a recursive process can also be created.
Earth Rotation
Explore a 3D simulation of celestial bodies. Adjust rotation speeds, reverse direction, and alter lighting angles. Choose from three distinct Earth visual styles for an interactive learning experience.
- Adjustable rotation speed
- Reverse rotation direction
- Adjustable sun lighting angle
- Three Earth visual styles
- 3D celestial animation
Read full descriptionHide full description
This is a 3D animation in which the sun, the earth, and the moon rotate. -You can change the rotation speed. The fastest is 1 second, and the slowest is 300 seconds to make one revolution. -It can rotate in the reverse direction, which is not possible in the natural world. -The earth and the moon can change the light from the sun by 30 degrees. -There are three types of earth: night lights, nature, and globes.
Screenshots
Verdict
The clearest difference is price: Arithmetic Quilts at Free against Earth Rotation's $0.99. Arithmetic Quilts also leads on ratings volume (3 vs 1) and iOS requirement (8.0 vs 15.0). Earth Rotation's advantage is rating (5.0 vs 4.3) and device support (3 vs 1). On update cadence, ads and in-app purchases 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
Arithmetic Quilts is free to download; Earth Rotation costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Earth Rotation holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 3 and 1 respectively.
Arithmetic Quilts ships an update every 14 months, Earth Rotation every 22 months. The most recent releases landed on October 23, 2026 and October 8, 2026 respectively.
| Parameter | Arithmetic Quilts | Earth Rotation |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 4.3 (3 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 3 — better | 1 |
| Update frequency | Every 14 months — better | Every 22 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 8.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 34 MB | 46 MB |
| Age rating | 4+ | 17+ |
| Developer | Thomas Bretl | Masahiro Tomosada |
Customer experience
Arithmetic Quilts
Earth Rotation
In-app purchases
Arithmetic Quilts
No in-app purchases
Earth Rotation
No in-app purchases
Questions
Is Arithmetic Quilts free?
Is Earth Rotation free?
Which has better reviews, Arithmetic Quilts or Earth Rotation?
Do Arithmetic Quilts or Earth Rotation have ads?
Which is updated more often, Arithmetic Quilts or Earth Rotation?
Other comparisons
