Wave Balls vs Fill It Happy
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Wave Balls
Guide a ball through levels by controlling wave physics. Navigate obstacles and reach the finish line in this intuitive puzzle game.
- Wave physics control
- Ball navigation
- Obstacle courses
- Level progression
- Intuitive gameplay
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Control the wave to move the ball from start to finish
Fill It Happy
Test your observation and visual acuity with this unique puzzle game. Maneuver fillings to match given contours across dozens of diverse levels featuring animals, food, and themed adventures. Enjoy an entirely ad-free experience.
- Innovative contour matching gameplay
- Dozens of diverse levels
- Ad-free gaming experience
- Boosts visual acuity
- Variety of themes and patterns
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Welcome to "Fill it Happy"! Innovative Gameplay: Challenge your observational skills! Maneuver the filling below to perfectly match the contour given above. This unique gameplay sets us apart, offering both enjoyment and a boost to your visual acuity! Diverse Levels: Explore dozens of patterns, including adorable animals, delicious food, refreshing beverages, mysterious aliens, mischievous monsters, and themed adventures like Christmas and mechanical wonders. Each level is a delightful surprise! Ad-Free Distraction: We understand ads can disrupt your gaming experience, so we empower players to skillfully achieve an entirely ad-free operation. Dive into the game without interruptions and enjoy seamless play! Game Website: For more information, visit our official website: www.cassplay.com Terms of Service and Privacy: Before embarking on the Harmony journey, make sure to review our Terms of Service and Privacy Policy: www.cassplay.com/terms Join us in discovering the joy of Harmony and embark on a creatively unique visual feast!
Screenshots
Verdict
The clearest difference is in-app purchases: Wave Balls at none against Fill It Happy's 4. On price, rating, ratings volume and update cadence 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. Fill It Happy sells 4 one-off in-app purchases. Wave Balls asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for Wave Balls against 5.0 for Fill It Happy. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
Both ship on a similar rhythm, roughly monthly. The most recent releases landed on October 8, 2026 and October 27, 2026 respectively.
| Parameter | Wave Balls | Fill It Happy |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (1 ratings) |
| Number of ratings | 1 | 1 |
| Update frequency | Monthly | Monthly |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 126 MB | 62 MB |
| Age rating | 4+ | 4+ |
| Developer | App Swim LLC | 振 曲 |
Customer experience
Wave Balls
Fill It Happy
In-app purchases
Wave Balls
No in-app purchases
Fill It Happy
- Undo+10$0.99
- remove Ads$1.99
- All-in-One Pack$1.99
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- Undo + 50$2.99
