# ARSA ENIGMA vs Bluestone EV

The clearest difference is update cadence: ARSA ENIGMA at every 3 days against Bluestone EV's every 3 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ARSA ENIGMA ships an update every 3 days, Bluestone EV every 3 weeks. The most recent releases landed on October 8, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | ARSA ENIGMA | Bluestone EV |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 3 weeks |
| Monetization | Free | — |
| Size | 20 MB | 29 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Arsa Tangchitsomkit](https://appshunter.io/developer/908885655) | [Bluestone Co.,Ltd](https://appshunter.io/developer/1777980300) |

## What reviewers say

### ARSA ENIGMA

[App page](https://appshunter.io/ios/app/arsa-enigma/id6504475118)

Securely encrypt and decrypt files for private sharing. Protect your data from leaks, fraud, and scams with this utility app. It offers multiple encryption levels for varying device capabilities.

**Highlights:** File encryption, File decryption, Secure data sharing, Private key management, Bilinear encryption (2 layers), Trilinear encryption (3 layers)

**Features:** macOS Compatibility

**In-app purchases:** none


### Bluestone EV

[App page](https://appshunter.io/ios/app/bluestone-ev/id6737797812)

**In-app purchases:** none


## Frequently asked questions

### Is ARSA ENIGMA free?

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

### Is Bluestone EV free?

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

### Do ARSA ENIGMA or Bluestone EV have ads?

Neither ARSA ENIGMA nor Bluestone EV shows ads.

### Which is updated more often, ARSA ENIGMA or Bluestone EV?

ARSA ENIGMA ships an update every 3 days, and Bluestone EV every 3 weeks. Most recently, ARSA ENIGMA was updated on October 8, 2026 and Bluestone EV on September 30, 2026.

---

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