# Random Number Generator. RNG vs Kairos

The clearest difference is in-app purchases: Kairos at none against Random Number Generator. RNG's 10. Kairos also leads on update cadence (every 4 days vs fortnightly) and iOS requirement (15.1 vs 17.0). Random Number Generator. RNG's advantage is device support (4 vs 2). On price and ads there is nothing between them.

Both are free to download. Random Number Generator. RNG sells 10 in-app purchases, starting at $2.99 per month. Kairos asks for nothing beyond the download.

Random Number Generator. RNG ships an update fortnightly, Kairos every 4 days. The most recent releases landed on October 24, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Random Number Generator. RNG | Kairos |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (3.3K ratings)](https://appshunter.io/ios/app/random-number-generator-rng/id1128190780/reviews)** | — |
| Number of ratings | **3.3K** | — |
| Positive reviews | 60.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 4 days** |
| Monetization | Freemium | — |
| Size | 59 MB | 36 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | **iPhone, iPad, Mac, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Volodymyr Yahenskyi](https://appshunter.io/developer/961335645) | [Benno Kohrs](https://appshunter.io/developer/1858491109) |

## What reviewers say

### Random Number Generator. RNG

[App page](https://appshunter.io/ios/app/random-number-generator-rng/id1128190780)

This app provides a versatile tool for generating random numbers, letters, and making decisions. It offers various randomization features like dice rolling, coin flipping, and custom list selection. Users can also utilize widgets and Apple Watch integration for quick access to random outcomes.

**Highlights:** Number generator (0-999999999), Letter generator, Dice roller, Custom list item generator, Coin flipper, Rock-Paper-Scissors, Widgets and Apple Watch support

**Features:** Apple Watch app, Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly plan | $2.99 | per month |
| Monthly plan | $2.99 | per month |
| Monthly plan | $4.99 | per month |
| Weekly plan | $4.99 | per 7 days |
| Annual plan | $19.99 | per year |
| Yearly plan | $29.99 | per year |
| Annual plan | $29.99 | per year |
| Remove ads | $4.99 | one-time |
| Lifetime. One-time purchase | $35.99 | one-time |
| Lifetime plan | $59.99 | one-time |


### Kairos

[App page](https://appshunter.io/ios/app/kairos-random-timer/id6759820843)

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

**In-app purchases:** none


## Frequently asked questions

### Is Random Number Generator. RNG free?

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

### Is Kairos free?

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

### Do Random Number Generator. RNG or Kairos have ads?

Neither Random Number Generator. RNG nor Kairos shows ads.

### Which is updated more often, Random Number Generator. RNG or Kairos?

Random Number Generator. RNG ships an update fortnightly, and Kairos every 4 days. Most recently, Random Number Generator. RNG was updated on October 24, 2026 and Kairos on October 19, 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.*