# Fast No. vs Octothink

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.

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 October 6, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Fast No. | Octothink |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/fast-no/id954953561/reviews)** | [2.3 (3 ratings)](https://appshunter.io/ios/app/octothink/id1494144794/reviews) |
| Number of ratings | 1 | **3** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 7 months | **Monthly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 5 MB | 727 MB |
| Requires iOS | **7.0** | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Maher Najmi](https://appshunter.io/developer/593206654) | [Absolutely Digital](https://appshunter.io/developer/1297918392) |

## What reviewers say

### Fast No.

[App page](https://appshunter.io/ios/app/fast-no/id954953561)

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.

**Highlights:** Speed-based gameplay, Accuracy challenge, High score tracking, Multiplayer scoring, Avoid incorrect taps

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |


### Octothink

[App page](https://appshunter.io/ios/app/octothink/id1494144794)

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.

**Highlights:** Cognitive skill stimulation, Enigmas, puzzles, and riddles, Memory, attention, multitasking training, Three difficulty levels, Progress tracking dashboard, International leaderboard

**Features:** macOS Compatibility

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month Subscription | $5.99 | per month |
| Annual Subscription | $39.99 | per year |
| 10 Gems | $0.99 | one-time |
| Silver Pack | $4.99 | one-time |
| 60 Gems | $4.99 | one-time |
| 175 Gems | $14.99 | one-time |
| 250 Gems | $19.99 | one-time |
| Golden Pack | $39.99 | one-time |
| 600 Gems | $49.99 | one-time |
| Diamond Pack | $90.00 | one-time |
| 1500 Gems | $99.99 | one-time |


## Frequently asked questions

### Is Fast No. free?

Fast No. is free to download, with in-app purchases available.

### Is Octothink free?

Octothink is free to download, with in-app purchases available.

### Which has better reviews, Fast No. or Octothink?

Fast No. is rated higher. Fast No. averages 5.0 out of 5 from 1 ratings, while Octothink averages 2.3 from 3 ratings.

### Do Fast No. or Octothink have ads?

Octothink shows ads; Fast No. does not.

### Which is updated more often, Fast No. or Octothink?

Fast No. ships an update every 7 months, and Octothink monthly. Most recently, Fast No. was updated on October 6, 2026 and Octothink on October 4, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*