# Random Number Generator RN vs Octuple Calc

The clearest difference is in-app purchases: Octuple Calc at none against Random Number Generator RN's 4. Octuple Calc also leads on update cadence (every 2 weeks vs monthly) and iOS requirement (15.8.3 vs 17.0). Random Number Generator RN's advantage is ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. Random Number Generator RN sells 4 in-app purchases, starting at $0.29 per 7 days. Octuple Calc asks for nothing beyond the download.

Random Number Generator RN ships an update monthly, Octuple Calc every 2 weeks. The most recent releases landed on August 24, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Random Number Generator RN | Octuple Calc |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Every 2 weeks** |
| Size | 10 MB | 36 MB |
| Requires iOS | 17.0 | **15.8.3** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Kai Chi Tsao](https://appshunter.io/developer/1299477756) | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) |

## What reviewers say

### Random Number Generator RN

[App page](https://appshunter.io/ios/app/random-number-generator-rn/id1483371779)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| VIP Weekly | $0.29 | per 7 days |
| VIP 1 Month | $0.99 | per month |
| VIP 1 Yer | $1.99 | per year |
| Premium Version | $3.99 | one-time |


### Octuple Calc

[App page](https://appshunter.io/ios/app/octuple-calc/id6742039735)

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

**In-app purchases:** none


## Frequently asked questions

### Is Random Number Generator RN free?

Random Number Generator RN is free to download, with in-app purchases available.

### Is Octuple Calc free?

Octuple Calc is free to download, with no in-app purchases.

### Do Random Number Generator RN or Octuple Calc have ads?

Octuple Calc shows ads; Random Number Generator RN does not.

### Which is updated more often, Random Number Generator RN or Octuple Calc?

Random Number Generator RN ships an update monthly, and Octuple Calc every 2 weeks. Most recently, Random Number Generator RN was updated on August 24, 2026 and Octuple Calc on September 10, 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.*