# Krypton vs True Random Numbers

The clearest difference is price: True Random Numbers at Free against Krypton's $2.99. True Random Numbers also leads on update cadence (every 2 days vs every 10 months). Krypton's advantage is in-app purchases (none vs 1) and ads (none vs shown).

True Random Numbers is free to download; Krypton costs $2.99 up front. True Random Numbers sells 1 one-off in-app purchase. Krypton asks for nothing beyond the download.

Krypton ships an update every 10 months, True Random Numbers every 2 days. The most recent releases landed on September 22, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Krypton | True Random Numbers |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/krypton/id1529946598/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 10 months | **Every 2 days** |
| Monetization | Paid | — |
| Size | 110 MB | 5 MB |
| Requires iOS | **14.0** | 17.6 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Steve Lidie](https://appshunter.io/developer/1869780159) | [Frank Buss](https://appshunter.io/developer/1555803140) |

## What reviewers say

### Krypton

[App page](https://appshunter.io/ios/app/krypton/id1529946598)

Securely encrypt and protect your personal documents and folders with strong encryption. This app acts like a digital vault, keeping your sensitive files safe from unauthorized access on your devices and cloud storage.

**Highlights:** Strong encryption for documents and folders, Acts as a secure digital vault, Supports various file types (pictures, movies, PDFs, etc.), Cloud synchronization with iCloud Drive and Dropbox, Available on iOS and macOS

**Features:** Vision Pro support

**In-app purchases:** none


### True Random Numbers

[App page](https://appshunter.io/ios/app/true-random-numbers/id6744599442)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


## Frequently asked questions

### Is Krypton free?

Krypton costs $2.99, with no in-app purchases.

### Is True Random Numbers free?

True Random Numbers is free to download, with in-app purchases available.

### Do Krypton or True Random Numbers have ads?

True Random Numbers shows ads; Krypton does not.

### Which is updated more often, Krypton or True Random Numbers?

Krypton ships an update every 10 months, and True Random Numbers every 2 days. Most recently, Krypton was updated on September 22, 2026 and True Random Numbers on September 20, 2026.

---

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