Stepwising vs Shor's algorithm
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Stepwising
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Stepwising invites you to explore, play with, and learn about gravity. You can check out Kepler's laws of planetary motion, observe and discover solutions to the 3-body problem, or try to drive a frictionless car around a circular track of ice. The program closely approximates the motion of stars, planets, moons, and other celestial objects moving through space under the influence of their gravitational fields. It does this recursively: an object's position determines the amount of force on it, the amount of force on it determines its acceleration, its acceleration determines its average velocity over a short period of time, and its average velocity determines its next position. If the time interval between calculations is small, a very good approximation of the motion is produced.
Shor's algorithm
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This app is a demonstration of Shor's algorithm. You can get some help to understand Shor's algorithm.
Screenshots
Verdict
The clearest difference is in-app purchases: Stepwising at none against Shor's algorithm's 3. Stepwising also leads on iOS requirement (8.0 vs 16.0). Shor's algorithm's advantage is update cadence (every 6 months vs every 15 months). On price, ads and 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
Both are free to download. Shor's algorithm sells 3 one-off in-app purchases. Stepwising asks for nothing beyond the download.
Stepwising ships an update every 15 months, Shor's algorithm every 6 months. The most recent releases landed on October 4, 2026 and October 27, 2026 respectively.
| Parameter | Stepwising | Shor's algorithm |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 15 months | Every 6 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPad | iPhone, iPad — better |
| Requires iOS | 8.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 38 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Thomas Bretl | Sungjun Kim |
In-app purchases
Stepwising
No in-app purchases
Shor's algorithm
- coffee$0.99
- latte$4.99
- whopper set$9.99
Questions
Is Stepwising free?
Is Shor's algorithm free?
Do Stepwising or Shor's algorithm have ads?
Which is updated more often, Stepwising or Shor's algorithm?
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