# SAJ vs LockBox

The clearest difference is in-app purchases: SAJ at none against LockBox's 3. SAJ also leads on iOS requirement (8.0 vs 15.0). LockBox's advantage is update cadence (weekly vs every 23 months). On price, ads and device support there is nothing between them.

Both are free to download. LockBox sells 3 one-off in-app purchases. SAJ asks for nothing beyond the download.

SAJ ships an update every 23 months, LockBox weekly. The most recent releases landed on October 26, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | SAJ | LockBox |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/lockbox-encrypted-video-player/id6751835978/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 23 months | **Weekly** |
| Monetization | — | Free with in-app purchases |
| Size | 152 MB | 136 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [SAJ Instrument Ab](https://appshunter.io/developer/962246290) | [长松 孙](https://appshunter.io/developer/1626925849) |

## What reviewers say

### SAJ

[App page](https://appshunter.io/ios/app/saj-dms-calib/id962246291)

**Features:** macOS Compatibility

**In-app purchases:** none


### LockBox

[App page](https://appshunter.io/ios/app/lockbox-encrypted-video-player/id6751835978)

Securely encrypt, license, and play videos, images, and PDFs. Protect your digital content with advanced security features and flexible licensing options for creators and businesses.

**Highlights:** Video, image, and PDF encryption, Secure playback up to 8K, Real-time backend decryption, Screen recording protection, Flexible licensing management, Batch encryption and archiving, Membership and e-commerce integration

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1000 coin | $1.99 | one-time |
| 10000 coin | $17.99 | one-time |
| 100000 coin | $149.99 | one-time |


## Frequently asked questions

### Is SAJ free?

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

### Is LockBox free?

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

### Do SAJ or LockBox have ads?

Neither SAJ nor LockBox shows ads.

### Which is updated more often, SAJ or LockBox?

SAJ ships an update every 23 months, and LockBox weekly. Most recently, SAJ was updated on October 26, 2026 and LockBox on October 30, 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.*