1s Speed Math vs Crazy TD
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
1s Speed Math
Test your mental math skills with this fast-paced game. You have only one second to select the correct answer to reach a high score and challenge your friends. It's a quick and engaging way to improve your arithmetic abilities.
- One-second answer time
- High score tracking
- Challenge friends
- Improve arithmetic skills
- Quick gameplay
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Instructions: - You have only one second to choose correct answer - Reach high score - Beat your friends
Crazy TD
Defend your tower from an invading red army by tapping to shoot. Avoid friendly fire with the blue army and earn points by eliminating enemies and birds. Compete on leaderboards and unlock achievements in this fast-paced defense game.
- Tap to shoot enemies
- Swipe for machine gun action
- Defend against red army
- Avoid shooting blue army
- Earn points for kills
- Game Center Leaderboard
- Game Center Achievements
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Fight off swarm of red army from taking over your tower. Blue army will be sent from time to time to defend your tower from taking over by the red army. Shoot the red army as fast as possible and avoid shooting the blue army. How to play: • TAP to shoot the red army as fast as you can. • SWIPE the screen to shoot the army with machine gun. • A point will be awarded when a red army or bird is shot. • Shooting the parachute will not earn you any point. Additional Features: • Game Center Leaderboard. • Game Center Achievements. ••• Health and Safety ••• Take a break if your fingers get tired or feeling sore.
Screenshots
Verdict
The clearest difference is rating: Crazy TD at 4.0 against 1s Speed Math's 2.0. Crazy TD also leads on update cadence (every 3 months vs every 9 months). 1s Speed Math's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price, ratings volume and device support 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. Crazy TD sells 1 one-off in-app purchase. 1s Speed Math asks for nothing beyond the download.
Crazy TD holds the better App Store score, 4.0 against 2.0. Both are backed by a comparable volume of ratings — 2 and 2 respectively.
1s Speed Math ships an update every 9 months, Crazy TD every 3 months. The most recent releases landed on October 9, 2026 and October 17, 2026 respectively.
| Parameter | 1s Speed Math | Crazy TD |
|---|---|---|
| Price | Free | Free |
| Rating | 2.0 (2 ratings) | 4.0 (2 ratings) — better |
| Positive reviews | — | 66.7% of reviews |
| Number of ratings | 2 | 2 |
| Update frequency | Every 9 months | Every 3 months — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 12.0 — better | 17.5 |
| Further details — not scored | ||
| Size | 14 MB | 6 MB |
| Age rating | 4+ | 12+ |
| Developer | Atoapps | Ang Chee Hong |
Customer experience
1s Speed Math
Crazy TD
In-app purchases
1s Speed Math
No in-app purchases
Crazy TD
- Remove In-Game Ads$0.99
