+/ vs REXER：Diagonal Strategy
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
+/
A unique brain training puzzle game where you connect number tiles. Tiles of the same color add, while different colors subtract. Master spells and create life-forms using the power of zero to enhance your gameplay.
- Connect same number tiles
- Add same color tiles
- Subtract different color tiles
- Master unique spells
- Create life-forms with zero
- Brain training puzzle
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Magical Math Puzzle +/-0 (Plus or Minus Zero) is a new brain training puzzle game that is distinctly different from the other brain-dead games out there. Achieving the highest score all depends on what you choose to keep, and what you omit. This game truly tests your brains skills! CONNECT SAME NUMBER TILES! If the tiles are same color, the numbers are added. If the tiles are different color, the numbers are subtracted. These are the basic rules. It's easy and simple to play, but challenging to master! MASTER THE SPELLS! Learn lots of unique spells! Can you find the best way to master them?! Don't forget that your way of thinking is true magic! CREATE NEW LIFE-FORMS USING THE POWER OF ZERO! These are extra helpers to make you stronger. When you create ZERO many times, an egg will hatch and reveal a new Life-Form. Give them lots of love!
REXER：Diagonal Strategy
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REXER features very simple rules. Anyone can start playing right away. 【Rules】 Piece Movement • Pieces move diagonally. • The King cannot be moved consecutively. • You can remove an opponent’s piece by trapping it between your pieces. You win by meeting any of the following conditions: • Capture the opponent’s King. • Move your King into the enemy territory. • Reduce the opponent’s pieces to one or fewer. 【Scoring】 Score is available in single-player (vs CPU). ◆ Remove enemy pieces 1 piece: 100 pts 2 pieces at once: 500 pts 3 pieces at once: 1500 pts 4 pieces at once: 3000 pts 5 pieces at once: 5000 pts 6 or more at once: 10000 pts ◆ Piece difference at victory +100 pts for each piece difference ◆ Bonuses • Capture the opponent’s King: +2000 pts • Win without losing any pieces: +3000 pts Higher CPU difficulty grants more score. Strong x2 score Strongest x3 score
Screenshots
Verdict
The clearest difference is in-app purchases: REXER：Diagonal Strategy at none against +/'s 7. REXER：Diagonal Strategy also leads on update cadence (daily vs every 16 months). +/'s advantage is iOS requirement (13.0 vs 15.0). 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. +/ sells 7 one-off in-app purchases. REXER：Diagonal Strategy asks for nothing beyond the download.
+/ ships an update every 16 months, REXER：Diagonal Strategy daily. Both last shipped on October 16, 2026.
| Parameter | +/ | REXER：Diagonal Strategy |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) — better | — |
| Positive reviews | 33.3% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 16 months | Daily — better |
| Ads | Yes | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 118 MB | 152 MB |
| Age rating | 4+ | 4+ |
| Developer | Greentail, Inc. | Koji Murakami |
In-app purchases
+/
- Flask of Essences$0.99
- Remove Ads$1.99
- Cashman$1.99
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- Bottle of Essences$3.99
- Bucket of Essences$9.99
- Tank of Essences$39.99
- Bath of Essences$79.99
REXER：Diagonal Strategy
No in-app purchases
