Fast No. vs Octothink
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Fast No.
Test your speed and accuracy in this quick-tap number challenge. Race against the clock to enter contact numbers before they reach the other side of the screen. Avoid tapping the wrong number to keep playing and achieve the highest score.
- Speed-based gameplay
- Accuracy challenge
- High score tracking
- Multiplayer scoring
- Avoid incorrect taps
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Can you write the contact numbers very quickly? Speed proved in writing the numbers in this challenge and participated score with your friends Try to write fast numbers before they reach the other side of the screen to get the highest score. Beware also that you click on the wrong number because it will end the challenge! هل تستطيع أن تكتب أرقام الإتصال بسرعة فائقة ؟ أثبت سرعتك في كتابة الأرقام بهذا التحدي وشارك نتيجتك مع أصدقائك حاول كتابة الأرقام السريعة قبل أن تصل إلى الجهة الأخرى من الشاشة للحصول على أعلى نقاط. أيضا إحذر أن تنقر على الرقم الخطأ لأن ذلك سينهي التحدي!
Octothink
This application offers a variety of puzzles and riddles designed to stimulate cognitive skills like memory, attention, and multitasking. It features multiple difficulty levels and a training dashboard to track progress. Compete with others on a global leaderboard.
- Cognitive skill stimulation
- Enigmas, puzzles, and riddles
- Memory, attention, multitasking training
- Three difficulty levels
- Progress tracking dashboard
- International leaderboard
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Octothink is a gaming application that triggers cognitive-behavioral skills, and is meticulously developed to keep you brain stimulated, active and dynamic. Octothink comprises of enigmas, puzzles and riddles that tackle diverse areas of your brain, such as memory, attention, multitasking and speed. Furthermore, it works on keeping your mind sharp and stimulated at all times. As simple as it can get, our brains need mental stimulation to stay bursting in health, and Octothink will make this happen. Octothink is a user-friendly and enjoyable application; and is suitable for all ages as it has three levels varying in difficulty. As practical as it can be, Octothink will work on: ATTENTIVENESS to details MULTITHINKING and MULTITASKING abilities MEMORY and RECOLLECTION of concepts and ideas PROBLEM SOLVING and EFFICIENCY Our professionals and engineers developed Octothink with diverse features to accommodate for every user. Some of our features include: • Three difficulty levels for users from all ages and educational backgrounds. Octothink is for all family members • More than thirty games varying in context, form and perspective • Training dashboard to keep you updated on your progress and available programs • A leaderboard to check your score and where you stand amongst international players Octothink is available in FREE and Premium versions. You can always upgrade your subscription to premium to unlock additional features, more levels in increasing difficulty and unlimited access to all available games. Be prepared to binge-play in your free time, you may even want to spare some additional time. Download Octothink now, create an account and start scoring.
Screenshots
Verdict
The clearest difference is rating: Fast No. at 5.0 against Octothink's 2.3. Fast No. also leads on ads (none vs shown) and iOS requirement (7.0 vs 12.0). Octothink's advantage is update cadence (monthly vs every 7 months) and ratings volume (3 vs 1). On price, in-app purchases, monetization model 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. Fast No. sells 1 one-off in-app purchase and Octothink sells 11 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.
Fast No. holds the better App Store score, 5.0 against 2.3. Both are backed by a comparable volume of ratings — 1 and 3 respectively.
Fast No. ships an update every 7 months, Octothink monthly. The most recent releases landed on September 23, 2026 and September 25, 2026 respectively.
| Parameter | Fast No. | Octothink |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 2.3 (3 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 | 3 — better |
| Update frequency | Every 7 months | Monthly — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 7.0 — better | 12.0 |
| Further details — not scored | ||
| Size | 5 MB | 727 MB |
| Age rating | 4+ | 4+ |
| Developer | Maher Najmi | Absolutely Digital |
Customer experience
Fast No.
Octothink
In-app purchases
Fast No.
- Remove Ads$0.99
Octothink
- 1 Month Subscription3 Days trial$5.991 Month
- Annual Subscription$39.991 Year
- 10 Gems$0.99
- Silver Pack$4.99
- 60 Gems$4.99
Show 6 moreShow fewer
- 175 Gems$14.99
- 250 Gems$19.99
- Golden Pack$39.99
- 600 Gems$49.99
- Diamond Pack$90.00
- 1500 Gems$99.99









