Mathrax vs 15 ﾠ
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Mathrax
This logic puzzle challenges you to fill grids with numbers based on specific mathematical and parity rules. It offers a vast amount of content with multiple board sizes, difficulty levels, and over 500 unique levels. Features include automatic error highlighting, progress saving, and time tracking.
- Number placement logic puzzles
- Mathematical operation conditions
- Parity (even/odd) conditions
- Multiple board sizes and difficulty levels
- Over 500 unique levels
- Automatic wrong number highlighting
- Autosave unfinished levels
- Best completion time recording
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Mathrax is a logic puzzle. The goal is to fill in each cell with numbers from 1 to N, where N is the size of the puzzle's side. No number may appear twice in any row or column. Circles with additional conditions may appear on intersections of lines inside the grid. - A number and a sign of mathematical operation (addition, subtraction, multiplication, division) - a number is a result of an operation execution with numbers in diagonally adjacent cells. - A letter "E" ("even") - all numbers in four cells are even. - A letter "O" ("odd") - all numbers in four cells are odd. **** Mathrax features **** # Content - 6 different sizes of board - 5 difficulty levels - more than 500 levels # Features - Highlight wrong number automatically - Autosave the process of unfinished levels - Record best completion time for each level # Challenge - Game Center Achievements - Try to complete as many levels as possible
15 ﾠ
A classic sliding tile puzzle game where you rearrange numbered tiles to achieve sequential order. Offers customizable colors and various board sizes for a personalized experience. Compete with others via Game Center leaderboards.
- Sliding tile puzzle gameplay
- Customizable colors
- Multiple board sizes (3x3 to 8x8)
- Game Center leaderboards
- No ads or in-app purchases
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The 15-puzzle is a sliding puzzle that consists of a frame of numbered square tiles in random order with one tile missing. The object of the puzzle is to place the tiles in order by making sliding moves that use the empty space. Features: • Simple and beautiful design • Fast and responsive interface • Completely customizable colors • Board sizes from 3x3 to 8x8 • No ads or in-app purchases • Game Center leaderboards
Screenshots
Verdict
The clearest difference is in-app purchases: 15 ﾠ at none against Mathrax's 1. 15 ﾠ also leads on ads (none vs shown) and update cadence (weekly vs every 5 months). Mathrax's advantage is rating (5.0 vs 4.6). On price, 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. Mathrax sells 1 one-off in-app purchase. 15 ﾠ asks for nothing beyond the download.
Mathrax holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: 15 ﾠ has 14 ratings behind it against 2, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.
Mathrax ships an update every 5 months, 15 ﾠ weekly. The most recent releases landed on October 8, 2026 and October 17, 2026 respectively.
| Parameter | Mathrax | 15 ﾠ |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | 4.6 (14 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 2 | 14 — better |
| Update frequency | Every 5 months | Weekly — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 7.0 — better |
| Further details — not scored | ||
| Size | 12 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Stanley Lam | Denis Tokarev |
Customer experience
Mathrax
15 ﾠ
In-app purchases
Mathrax
- Upgrade to Full Version$0.99
15 ﾠ
No in-app purchases
