RADD vs KAMI 2
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
RADD
Test your reflexes and improve your math skills with this fast-paced addition game. Swipe numbers to merge and add them quickly to increase your score before the timer runs out. Compete with friends and enjoy colorful, addictive gameplay.
- Swipe to merge numbers
- Add numbers for score
- Timed gameplay
- Power-ups for boosts
- Compete with friends' scores
- Improve addition skills
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RADD is a speed math game of adding numbers. Compete with your friend’s scores, test your reflexes, and improve your math skills in this fun and colorful brain game! How to play: - Swipe numbers together to merge them - Merged numbers are added together - Adding numbers quickly increases your score - Tap on power-ups for a boost - Be quick - the timer will run out on you! RADD (Radius + Add) will improve your addition skills or just pass the time with it’s addicting gameplay!
KAMI 2
This game challenges players to fill each puzzle with a single color using the fewest moves possible. It offers over 100 handcrafted puzzles, daily challenges, and the ability to create and share your own designs.
- Hand-crafted puzzles
- Single color flood mechanic
- Fewest moves challenge
- Daily challenges
- User-generated puzzles
- Puzzle builder
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Sequel to #1 puzzle game, KAMI The calming yet addictive puzzle game is back! With over 100 hand-crafted puzzles, Kami 2 takes you on a mind-twisting journey that combines logic and problem-solving. Can you achieve perfection? Flood each puzzle with a single color in as few moves as possible to claim a 'Perfect' sticker. But watch out for subtle new tricks and fiendish surprises. Want even more? Beat the global Daily Challenge, earn a winning streak and compare your scores to other players. Test yourself on thousands of user-generated puzzles, uploaded daily. Get creative and take on the world. Craft your own KAMI designs using the Puzzle Builder. Design and share your creations, send them to your friends and challenge the world to match your score.
Screenshots
Verdict
The clearest difference is ads: RADD at none against KAMI 2's shown. RADD also leads on update cadence (fortnightly vs every 2 months) and iOS requirement (12.0 vs 15.0). KAMI 2's advantage is ratings volume (15K vs 29). On price, rating, review sentiment and in-app purchases 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. RADD sells 1 one-off in-app purchase and KAMI 2 sells 7 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 4.8 for RADD against 4.7 for KAMI 2. That said, the two scores are not equally well evidenced: KAMI 2 has 15K ratings behind it against 29, so its average is the more settled of the two. Written reviews are what separate them: 76% of RADD's written reviews are positive against 84% of KAMI 2's.
RADD ships an update fortnightly, KAMI 2 every 2 months. The most recent releases landed on October 12, 2026 and October 19, 2026 respectively.
| Parameter | RADD | KAMI 2 |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (29 ratings) — better | 4.7 (15K ratings) |
| Positive reviews | 76.5% of reviews | 83.8% of reviews — better |
| Number of ratings | 29 | 15K — better |
| Update frequency | Fortnightly — better | Every 2 months |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 12 MB | 396 MB |
| Age rating | 4+ | 4+ |
| Developer | Toast - Apps and Software LLC | State of Play Games |
Customer experience
RADD
KAMI 2
Bugs and requests
RADD
Not enough reviews yet to summarise bugs or requests.
KAMI 2
Reported bugs
3 issues- Daily puzzles not loading or resetting incorrectly
- User-created puzzles not saving or syncing properly
- App freezing or crashing on certain devices
Requested features
4 requests- Earn free hints through gameplay achievements
- Option to undo moves or restart puzzles
- Improved puzzle search and discovery
- Colorblind accessibility features
In-app purchases
RADD
- Extra Points$0.99
KAMI 2
- 3 Hints$0.99
- Special Palettes 1$0.99
- Special Palettes 2$0.99
Show 4 moreShow fewer
- Special Palettes 3$0.99
- 10 Hints$1.99
- 30 Hints$4.99
- 75 Hints$9.99
