Rudoku vs cardinal.
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Rudoku
This is a challenging number and logic puzzle game with multiple modes and difficulty levels. Track your progress with detailed stats and earn achievements. Enjoy endless playability with unique puzzles and accessibility features like dark mode.
- Multiple game modes
- Adjustable difficulty levels
- Variable board sizes
- Detailed gameplay stats
- Multiple achievements
- Dark and light color modes
- No in-app purchases
Read full descriptionHide full description
Rudoku is an expert level puzzle challenge for fans of numbers and logic games. Multiple game modes, difficulty levels, and board sizes will keep your brain stimulated as you decipher the solutions to each puzzle. Maintaining high gameplay stats and earning multiple achievements will make Rudoku your go-to brain teaser. Take your time and see how long it takes you in Relaxed Mode. Speed and accuracy come into play in Race Mode when your goal is to solve the puzzle before time runs out. Endless Mode makes each game board increasingly difficult to solve. KEY FEATURES • Endless Playability - Puzzles will never repeat while multiple game modes, difficulty levels, and board sizes keep the challenge fresh and your brain sharp. • Game Play Stats - In game stats will let you know the duration of each game, how many moves you made, your win percentage, and more. • Dark and Light Colour Modes - This great accessibility feature makes the screen easier on your eyes in the dark. • Multiple Achievements - Earn awards and Game Centre points a number of different ways including level achievements and stats challenges. • No In-App Purchases - Pay once and play. No need to waste time on ads or pesky in-app purchasing gimmicks.
cardinal.
Engage in a minimalistic logic puzzle game where you deduce a secret solution using sixteen cards and clues. Enjoy procedurally generated boards for endless play and compete globally in daily challenges.
- Minimalistic logic puzzles
- Deduce secret solutions
- Procedurally generated boards
- Endless regular mode
- Daily global competitions
- 16 logic cards
Read full descriptionHide full description
Minimalistic yet challenging, CARDINAL gives you sixteen different cards and clues in which you must figure out the secret solution! Begin with the cardinal rule you can then continue to creatively deduce the solution from there! An endless amount of procedurally generated boards waits for you in regular mode. And when you feel ready, test yourself in the daily competition alongside players from all over the globe.
Screenshots
Verdict
The clearest difference is update cadence: cardinal. at every 3 days against Rudoku's every 3 weeks. cardinal. also leads on iOS requirement (11.0 vs 18.0). On price, rating, review sentiment and ratings volume 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. Neither carries in-app purchases, so what you see is what you pay.
cardinal. holds the better App Store score, 4.9 against 4.7. Both are backed by a comparable volume of ratings — 19 and 14 respectively. Written reviews complicate that: 85% of Rudoku's written reviews are positive against 80% of cardinal.'s, so the app with the better star average is not the one people write more warmly about.
Rudoku ships an update every 3 weeks, cardinal. every 3 days. The most recent releases landed on October 22, 2026 and October 24, 2026 respectively.
| Parameter | Rudoku | cardinal. |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (19 ratings) | 4.9 (14 ratings) — better |
| Positive reviews | 84.6% of reviews — better | 80.0% of reviews |
| Number of ratings | 19 — better | 14 |
| Update frequency | Every 3 weeks | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 18.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 15 MB | 99 MB |
| Age rating | 4+ | 4+ |
| Developer | Cerebral Gardens | Perfect Hat Games LLC |
Customer experience
Rudoku
cardinal.
In-app purchases
Rudoku
No in-app purchases
cardinal.
No in-app purchases









