Hole Busters 3D vs Stack 21
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Hole Busters 3D
Control a powerful black hole to swallow objects in various themed environments. Grow your black hole by devouring more items to overcome challenges. This game offers a relaxing yet brain-exercising experience with strategic puzzle-solving.
- Control a powerful black hole
- Shuttle through different theme maps
- Rationally arrange swallowing order
- Black hole grows larger with each swallow
- Richer theme maps and models
- Upgrade your black hole indefinitely
- Excellent physics and graphics
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Welcome to Hole Busters 3D! You will control a powerful black hole, shuttle through different theme models and maps, rationally arrange the order of swallowing, guiding it to devour objects. Your black hole will grow larger with each swallow, and the more you swallow, the stronger and bigger your black hole will become! Help you overcome more complex obstacles and challenges. This game is perfect for relaxing and challenging yourself. It combines strategy and puzzle solving in a relaxed environment, making it ideal for those who like to relax but exercise their brains. Game features 1. Richer and more beautiful theme maps and models Refuse to repeat the experience day after day. Food shops, clothing stores, department stores, farms, the ocean... More topics to explore. A large number of exquisite models, open to devour the visual feast. 2. Upgrade your black hole indefinitely Bigger black holes if you can. Free props start help, black hole upgrade faster! Bigger! 3. Excellent physics and graphics Smooth engulf a large number of items, flowing like silky decompression. The picture is bright and beautiful, bringing a good mood of the day. 4. A relaxing puzzle solving experience Freedom to control the route of travel. No need to wait, anytime, anywhere open to devour. Relaxing music, gentle sound effects, enjoy the ear spa while eating. Get ready to master black hole physics and enjoy a fun-filled journey!
Stack 21
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Stack 21 is a simple number-stacking puzzle game that’s easy to learn and surprisingly hard to put down. Choose numbered tiles and build your stack toward 21. Hit exactly 21 to clear the stack and build your streak. Go over 21 and you take a strike. Three strikes ends the game. Think ahead, watch the total, and see how high you can score. • Simple, fast puzzle gameplay • Streak bonuses for consecutive clears • Local high-score tracking • Works offline • No account required • No ads • No in-app purchases • No tracking Your game progress and high score stay on your device. Stack 21 is published by Doleman Enterprises LLC.
Screenshots
Verdict
The clearest difference is in-app purchases: Stack 21 at none against Hole Busters 3D's 20. Stack 21 also leads on ads (none vs shown). Hole Busters 3D's advantage is chart position (#58 vs unranked) and device support (3 vs 1). On price 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. Hole Busters 3D sells 20 one-off in-app purchases. Stack 21 asks for nothing beyond the download.
| Parameter | Hole Busters 3D | Stack 21 |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (18K ratings) — better | — |
| Positive reviews | 38.2% of reviews | — |
| Number of ratings | 18K — better | — |
| Update frequency | Every 6 days | — |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Best chart rank | #58 — better | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 825 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | FUNSEA LIMITED | Doleman Enterprises |
Bugs and requests
Hole Busters 3D
Reported bugs
2 issues- Items suspended too high to collect in levels 198, 434, and 906
- Impossible to progress in level 198 due to suspended items
Requested features
3 requests- Fix level 198 glitch
- Fix level 434 bug
- Fix level 906 suspended items
Stack 21
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Hole Busters 3D
- CoinBundle1$1.99
- Endless Treasure03$2.99
- Endless Treasure10$4.99
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- RemoveAds$4.99
- BeginnerBundle$4.99
- Merge Bundle$7.99
- CoinBundle2$8.99
- Merge Bundle Silver$9.99
- Silver Treasure Bundle$9.99
- Hole Pass$9.99
- RemoveAds2$9.99
- MasterBundle$9.99
- CoinBundle3$13.99
- MegaBundle$19.99
- CoinBundle4$27.99
- GiantBundle$39.99
- CoinBundle5$54.99
- UltraBundle$79.99
- LegendaryBundle$99.99
- CoinBundle6$99.99
Stack 21
No in-app purchases







