Factor! vs Shelf Sort
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Factor!
Engage in a daily math and logic puzzle to enhance your streak and challenge friends. Select from 25 numbers daily, strategically choosing them in the correct sequence to achieve the highest score.
- Daily math and logic puzzles
- Streak building
- Friend competition
- Number selection and ordering
- Score maximization
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Play Factor! the daily math and logic puzzle to build up your streak and compete with your friends. Pick out of the daily selection of 25 numbers, being careful to pick the right ones in the right order, all while trying to maximize your score.
Shelf Sort
Engage in a match-3 puzzle game where players clear shelves by matching three identical objects. Progress through levels by strategically clearing items and completing objectives.
- Match 3 objects
- Clear shelves
- Puzzle gameplay
- Level progression
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Match 3 objects and clear the shelves!
Screenshots
Verdict
The clearest difference is in-app purchases: Factor! at none against Shelf Sort's 6. Factor! also leads on ads (none vs shown) and ratings volume (29 vs 3). Shelf Sort's advantage is update cadence (every 4 days vs fortnightly) and iOS requirement (12.0 vs 16.0). On price, rating, review sentiment 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. Shelf Sort sells 6 one-off in-app purchases. Factor! asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for Factor! against 5.0 for Shelf Sort. That said, the two scores are not equally well evidenced: Factor! has 29 ratings behind it against 3, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.
Factor! ships an update fortnightly, Shelf Sort every 4 days. The most recent releases landed on September 28, 2026 and September 29, 2026 respectively.
| Parameter | Factor! | Shelf Sort |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (29 ratings) | 5.0 (3 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 29 — better | 3 |
| Update frequency | Fortnightly | Every 4 days — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 4 MB | 202 MB |
| Age rating | 4+ | 9+ |
| Developer | Samuel Gauck | Emre Yazar |
Customer experience
Factor!
Shelf Sort
In-app purchases
Factor!
No in-app purchases
Shelf Sort
- 100 Coins$1.99
- 500 Coins$9.99
- 1000 Coins$14.99
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- 2500 Coins$29.99
- 5000 Coins$59.99
- 10000 Coins$99.99
