# OneCryption vs Authenticate By KDC

The clearest difference is in-app purchases: Authenticate By KDC at none against OneCryption's 5. Authenticate By KDC also leads on update cadence (every 5 weeks vs every 4 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. OneCryption sells 5 in-app purchases, starting at $49.99 per month. Authenticate By KDC asks for nothing beyond the download.

OneCryption ships an update every 4 months, Authenticate By KDC every 5 weeks. Both last shipped on October 14, 2026.

## The numbers

| Metric | OneCryption | Authenticate By KDC |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/onecryption/id1399893476/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 5 weeks** |
| Monetization | Freemium | — |
| Size | 11 MB | 4 MB |
| Requires iOS | 17.6 | 17.6 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Christian Hell](https://appshunter.io/developer/329510560) | [Kenneth Lovett](https://appshunter.io/developer/1831085892) |

## What reviewers say

### OneCryption

[App page](https://appshunter.io/ios/app/onecryption/id1399893476)

This app offers true offline encryption for messages, photos, videos, and files. It emphasizes absolute secrecy through direct key exchange and no server reliance, ensuring quantum-proof security.

**Highlights:** Offline encryption for messages and files, Direct key exchange, No server reliance, Quantum-proof security, File and media encryption, Simple encryption/decryption

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium features monthly | $49.99 | per month |
| Premium features yearly | $500.00 | per year |
| Key of size 100MB | $0.99 | one-time |
| Key of size 500MB | $0.99 | one-time |
| Premium Lifetime | $399.99 | one-time |


### Authenticate By KDC

[App page](https://appshunter.io/ios/app/authenticate-by-kdc/id6751268798)

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

**In-app purchases:** none


## Frequently asked questions

### Is OneCryption free?

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

### Is Authenticate By KDC free?

Authenticate By KDC is free to download, with no in-app purchases.

### Do OneCryption or Authenticate By KDC have ads?

Neither OneCryption nor Authenticate By KDC shows ads.

### Which is updated more often, OneCryption or Authenticate By KDC?

OneCryption ships an update every 4 months, and Authenticate By KDC every 5 weeks. Most recently, OneCryption was updated on October 14, 2026 and Authenticate By KDC on October 14, 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.*