# OneCryption vs DecideNow

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

Both are free to download. OneCryption sells 5 in-app purchases, starting at $49.99 per month and DecideNow sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

OneCryption ships an update every 3 months, DecideNow weekly. The most recent releases landed on June 5, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | OneCryption | DecideNow |
| --- | --- | --- |
| 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 | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Weekly** |
| Monetization | Freemium | — |
| Size | 11 MB | 46 MB |
| Requires iOS | 17.6 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Christian Hell](https://appshunter.io/developer/329510560) | [Takuma Nishimaki](https://appshunter.io/developer/1760543171) |

## 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 |


### DecideNow

[App page](https://appshunter.io/ios/app/decidenow-rational-decisions/id6596765054)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade to Pro | $2.99 | one-time |


## Frequently asked questions

### Is OneCryption free?

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

### Is DecideNow free?

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

### Do OneCryption or DecideNow have ads?

DecideNow shows ads; OneCryption does not.

### Which is updated more often, OneCryption or DecideNow?

OneCryption ships an update every 3 months, and DecideNow weekly. Most recently, OneCryption was updated on June 5, 2026 and DecideNow on September 7, 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.*