Tap Stacks vs Opp Ball
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Tap Stacks
Tap the screen to stack blocks as high as you can. Blocks move faster as the tower grows. Test your reflexes and precision to avoid dropping any blocks.
- Tap to stack blocks
- Increasing speed
- Precise tapping required
- Endless stacking gameplay
- Simple one-tap controls
Read full descriptionHide full description
Stack blocks! The higher you get the faster they go. Can you stack 'em all? How To Play: Tap anywhere on the screen to stack a block. Don't drop them!
Opp Ball
Test your aim and timing by shooting balls into a bucket. Master the perfect shot to score points and advance.
- Aim and shoot balls
- Score points
- Bucket target
- Timing challenges
Read full descriptionHide full description
Find the right moment and shoot the balls into the bucket. No forced ads. Just aim, shoot, bounce, and solve. Opp Ball is a satisfying physics puzzle built around timing, precision, and clever bounces. Tap to launch the balls, guide them past moving obstacles, and fill the bucket to complete each level. Simple to learn, but every new challenge asks you to find the perfect moment and the right path. Take your shot, fill the bucket, and see how many levels you can complete.
Screenshots
Verdict
Tap Stacks and Opp Ball both sit at 4.6 stars, but that hides the real split: 100% of Tap Stacks's written reviews are positive against 9% of Opp Ball's. Opp Ball's advantage is update cadence (every 8 days vs every 3 months) and ratings volume (1.3K vs 11). On price, rating, ads 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. Tap Stacks sells 2 one-off in-app purchases and Opp Ball sells 8 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 — 4.6 for Tap Stacks against 4.6 for Opp Ball. That said, the two scores are not equally well evidenced: Opp Ball has 1.3K ratings behind it against 11, so its average is the more settled of the two. Written reviews are what separate them: 100% of Tap Stacks's written reviews are positive against 9% of Opp Ball's.
Tap Stacks ships an update every 3 months, Opp Ball every 8 days. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.
| Parameter | Tap Stacks | Opp Ball |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (11 ratings) — better | 4.6 (1.3K ratings) |
| Positive reviews | 100.0% of reviews — better | 9.2% of reviews |
| Number of ratings | 11 | 1.3K — better |
| Update frequency | Every 3 months | Every 8 days — better |
| Ads | Yes | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Ad-supported — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 81 MB | 217 MB |
| Age rating | 4+ | 4+ |
| Developer | Brook Street Games | Shanghai Sanzhan Network Technology Co., Ltd. |
Customer experience
Tap Stacks
Opp Ball
Bugs and requests
Tap Stacks
Not enough reviews yet to summarise bugs or requests.
Opp Ball
Reported bugs
2 issues- Unable to 3-star level 65
- Compatibility issues with older devices
Requested features
2 requests- Option to remove ads
- More challenging levels
In-app purchases
Tap Stacks
- 10 Angel Wings$0.99
- 50 Angel Wings$2.99
Opp Ball
- STARTER PACK$1.99
- 1,000 Game Coins$1.99
- 5,000 Game Coins$7.99
Show 5 moreShow fewer
- Remove Ads$9.99
- 10,000 Game Coins$14.99
- 25,000 Game Coins$29.99
- 50,000 Game Coins$54.99
- 100,000 Game Coins$99.99
