# Number Facts! vs Octo

The clearest difference is in-app purchases: Number Facts! at none against Octo's 1. Octo's advantage is ads (none vs shown) and update cadence (weekly vs every 3 months). On price and device support there is nothing between them.

Both are free to download. Octo sells 1 one-off in-app purchase. Number Facts! asks for nothing beyond the download.

Number Facts! ships an update every 3 months, Octo weekly. The most recent releases landed on September 26, 2026 and June 4, 2026 respectively.

## The numbers

| Metric | Number Facts! | Octo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (2 ratings)](https://appshunter.io/ios/app/octo-learn-base-conversion/id1505766480/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Weekly** |
| Monetization | — | Free |
| Size | 30 MB | 32 MB |
| Requires iOS | 15.1 | **10.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Nandha Kumar Ravi](https://appshunter.io/developer/1430918680) | [VESIGN d.o.o.](https://appshunter.io/developer/1505766479) |

## What reviewers say

### Number Facts!

[App page](https://appshunter.io/ios/app/number-facts/id1491900209)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Octo

[App page](https://appshunter.io/ios/app/octo-learn-base-conversion/id1505766480)

Master number base conversions with this educational tool. It offers step-by-step solutions for decimal to any base conversions and provides over 12,000 practice assignments to solidify your understanding.

**Highlights:** Binary, octal, decimal, hexadecimal conversion, Step-by-step decimal to any base solutions, Over 12,000 practice assignments, Supports iPhone and iPod

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Octo Plus | $1.99 | one-time |


## Frequently asked questions

### Is Number Facts! free?

Number Facts! is free to download, with no in-app purchases.

### Is Octo free?

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

### Do Number Facts! or Octo have ads?

Number Facts! shows ads; Octo does not.

### Which is updated more often, Number Facts! or Octo?

Number Facts! ships an update every 3 months, and Octo weekly. Most recently, Number Facts! was updated on September 26, 2026 and Octo on June 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.*