Zap Numbers! vs Stack Tower
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Zap Numbers!
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"Zap Numbers" is a simple yet addictive puzzle game that challenges your math skills and reflexes. [How to Play] The rules are simple. Just tap adjacent number blocks! - If numbers are the SAME: They vanish! (Zap!) - If numbers are DIFFERENT: They subtract and the remainder stays. New blocks will rise from the bottom as you play. Think fast and clear the board before the blocks reach the top "Danger Zone"! [Features] - Simple controls anyone can pick up and play - Deep strategy using "Subtraction" mechanics - Great brain training to sharpen your calculation skills - Perfect for killing time during your commute - Challenge your limits with the "Best Score" feature How high can you score? Test your brain power now!
Stack Tower
Tap to stack blocks with precision and build the tallest tower possible. Perfect placements are key to maintaining width and boosting your score. Compete in daily challenges and real-time multiplayer matches.
- Precision block stacking
- Daily challenges with unique levels
- Real-time multiplayer battles
- Game Center leaderboards
- Unlockable skins and achievements
- Satisfying sound and haptic feedback
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Stack blocks with precision and build the tallest tower you can. Every tap counts. Stack Tower is a fast-paced block stacking game where timing is everything. Blocks slide across the screen and you tap to place them. Any overhang gets sliced off, making the next block smaller. Land perfectly to keep your tower wide and your score climbing. PRECISION STACKING Tap at just the right moment to place each block. Perfect placements keep your tower full width. Chain together perfect placements to build combos that recover lost width and boost your score. DAILY CHALLENGES A new challenge drops every day with unique platform widths and speed curves. Some days test your reflexes, others reward patience. Everyone plays the same seed, so the daily leaderboard is a true test of skill. REAL-TIME MULTIPLAYER Race head to head against friends or random opponents through Game Center. Watch their tower grow in real time as you both compete for the highest score. Invite friends directly or get matched automatically. GAME CENTER LEADERBOARDS Compete on daily, weekly, and all-time leaderboards. See how your best runs stack up against players around the world. 18 UNLOCKABLE SKINS Earn skins by hitting milestones like high scores, combos, and total blocks placed. Each skin changes your block colors and background gradients, giving your tower a fresh look. ACHIEVEMENTS Track your progress through dozens of achievements. Hit score targets, land perfect streaks, and rack up lifetime stats to unlock rewards. PRO FEATURES Take your game to the next level with Pro. Unlock all 18 skins instantly, including 3 exclusive Pro-only designs. Get detailed game statistics to track your improvement, and enjoy an ad-free experience. DESIGNED TO FEEL GREAT Satisfying sound effects and haptic feedback on every block placement. Smooth animations, camera shake on impacts, and particle bursts on perfect landings make every round feel alive. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Terms of Use: https://www.napitventures.com/apps/stack-tower/terms Privacy Policy: https://www.napitventures.com/apps/stack-tower/privacy
Screenshots
Verdict
The clearest difference is in-app purchases: Zap Numbers! at none against Stack Tower's 1. Zap Numbers! also leads on update cadence (every 2 weeks vs every 5 months). On price, ads, device support and iOS requirement 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. Stack Tower sells 1 one-off in-app purchase. Zap Numbers! asks for nothing beyond the download.
Zap Numbers! ships an update every 2 weeks, Stack Tower every 5 months. The most recent releases landed on October 9, 2026 and October 6, 2026 respectively.
| Parameter | Zap Numbers! | Stack Tower |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 2 weeks — better | Every 5 months |
| Ads | Yes | Yes |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 162 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Chunk Crank | Jenesh Napit |
In-app purchases
Zap Numbers!
No in-app purchases
Stack Tower
- Pro Upgrade$0.99









