NumRush vs Keep your reflexes
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
NumRush
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Challenge your mind with NumRush, an addictive math puzzle game that combines strategy, speed, and mathematical thinking! Whether you're a casual player or a math enthusiast, NumRush offers an engaging experience for everyone. GAMEPLAY: • Select two numbers and perform operations (+, -, ×, ÷) • Use the result to create new combinations • Race against time to reach the target number • Score points based on your speed and remaining time • Undo mistakes and perfect your strategy FEATURES: • Multiple difficulty levels (Easy to Expert) • Daily puzzles with global leaderboards • Single-player mode for unlimited use • Real-time multiplayer battles with friends BE THE BEST: • Time-based scoring system • Difficulty multipliers for higher scores • Multiplayer battles with friends • Cumulative scoring across rounds • Daily puzzles with global rankings PERFECT FOR: • Math enthusiasts looking for a challenge • Casual gamers wanting to sharpen their skills • Friends looking for competitive fun • Anyone who loves puzzle games Download NumRush now and put your mathematical thinking to the test! Can you reach the target number before time runs out? --- Terms of Use: https://numrush.app/terms Privacy Policy: https://numrush.app/privacy
Keep your reflexes
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FlashFive is a fun training game that helps you boost your focus and improve your reaction speed! Five circles appear on the screen, and your goal is to tap the one that lights up within the time limit. The time gets shorter little by little, but don’t rush—take your time and enjoy the challenge. Your score is based on how many circles you tap correctly. Play at your own pace and steadily train your concentration while having fun. Try playing a little every day to refresh your mind and body!
Screenshots
Verdict
The clearest difference is in-app purchases: Keep your reflexes at none against NumRush's 2. Keep your reflexes also leads on iOS requirement (15.6 vs 17.6). NumRush's advantage is ads (none vs shown). On price, update cadence 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. NumRush sells 2 in-app purchases, starting at $2.99 per year. Keep your reflexes asks for nothing beyond the download.
Both ship on a similar rhythm, roughly every 2 days. The most recent releases landed on September 12, 2026 and September 20, 2026 respectively.
| Parameter | NumRush | Keep your reflexes |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 days | Every 2 days |
| Ads | No — better | Yes |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.6 | 15.6 — better |
| Further details — not scored | ||
| Size | 24 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Rajat Vaghani | Masaharu Tsukamoto |
In-app purchases
NumRush
- Annual Subscription3 Days trial$2.991 Year
- Lifetime Access$4.99
Keep your reflexes
No in-app purchases
