Deco Deck vs Arithmetist
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Deco Deck
This logic puzzle challenges you to connect cards into groups of five, forming valid hands. Every card must be part of a hand to solve the puzzle, with each puzzle having a single unique solution. Daily free puzzles are available, with more accessible via subscription or a one-time purchase.
- Link cards into groups of five
- Form valid card hands
- Solve unique puzzles
- Daily free puzzles
- Subscription for more puzzles
- Lifetime access option
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Deco Deck is an original logic puzzle from the creator of Semantle.. Your goal is to link the cards on the board in connected groups of five, such that each group makes a valid "hand". To win, every card on the board must be part of a hand. Each puzzle has only one solution. There are two free puzzles every day. More puzzles are available by subscription. You can purchase an auto-renewing subscription through an In-App Purchase. The subscription is $4.99 per year. Or you can buy lifetime access for $9.99. • Your subscription will be charged to your iTunes account at confirmation of purchase and will automatically renew (at the duration selected) unless auto-renew is turned off at least 24 hours before the end of the current period. • The subscription may not be cancelled during the active subscription period, but you turn off auto-renewal by visiting your iTunes Account Settings after purchase. • EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Arithmetist
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"Arithmetist" is an exciting fast-paced calculation puzzle game designed to test your math skills and quick thinking! Puzzle Rules The rules are simple yet challenging. Draw a single line to create an equation that matches the specified "Goal" number to clear the level. You will use the following basic operations: Addition: 1 + 1 = 2 Subtraction: 3 - 1 = 2 Multiplication: 1 x 2 = 2 Modulus: 7 % 5 = 2 Equations are calculated from left to right, so you need to be mindful of the order of operations. For example: 1 + 2 x 3 = 9 Following these rules, your task is to create the optimal equation to reach the goal number. Score The scoring system is based on the level and the length of the equation you create. Even if the result is the same, longer equations will earn higher scores. This means you need to think creatively and strategically, making the game not just about calculations but also about solving puzzles. Levels The game has a maximum level of 20. Reaching level 20 requires advanced calculation skills and cool-headed decision-making. Each level gradually increases in difficulty, constantly providing a new challenge for the player. Test your math abilities and aim for the highest level! Challenging Gameplay "Arithmetist" offers simple yet deep gameplay. Compete for high scores and challenge your own personal best to experience continuous discovery and a sense of accomplishment. Playing "Arithmetist" is not only fun but also helps improve your calculation and problem-solving skills. Enjoy the game anytime, anywhere on your smartphone. Download now and start your challenge! Aim to become the ultimate calculation puzzle master!
Screenshots
Verdict
The clearest difference is ads: Deco Deck at none against Arithmetist's shown. Arithmetist's advantage is update cadence (daily vs every 5 months) and iOS requirement (12.0 vs 14.0). On price, in-app purchases 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. Deco Deck sells 1 one-off in-app purchase and Arithmetist sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Deco Deck ships an update every 5 months, Arithmetist daily. The most recent releases landed on October 12, 2026 and October 27, 2026 respectively.
| Parameter | Deco Deck | Arithmetist |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 5 months | Daily — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 14.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 70 MB | 115 MB |
| Age rating | 4+ | 4+ |
| Developer | David Turner | Code and DESIGN inc |
In-app purchases
Deco Deck
- Eternal$9.99
Arithmetist
- No Ads$2.99









