# IPSA Lock vs KJCST

The clearest difference is update cadence: KJCST at every 4 days against IPSA Lock's every 10 months. IPSA Lock's advantage is iOS requirement (9.0 vs 16.6). 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.

IPSA Lock ships an update every 10 months, KJCST every 4 days. Both last shipped on October 29, 2026.

## The numbers

| Metric | IPSA Lock | KJCST |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 4 days** |
| Size | 101 MB | 144 MB |
| Requires iOS | **9.0** | 16.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [上根 陈](https://appshunter.io/developer/1386531409) | [Eloit Innovations Private Limited](https://appshunter.io/developer/1277769387) |

## What reviewers say

### IPSA Lock

[App page](https://appshunter.io/ios/app/ipsa-lock/id1485507979)

**Features:** macOS Compatibility

**In-app purchases:** none


### KJCST

[App page](https://appshunter.io/ios/app/kjcst/id6820496593)

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

**In-app purchases:** none


## Frequently asked questions

### Is IPSA Lock free?

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

### Is KJCST free?

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

### Do IPSA Lock or KJCST have ads?

Neither IPSA Lock nor KJCST shows ads.

### Which is updated more often, IPSA Lock or KJCST?

IPSA Lock ships an update every 10 months, and KJCST every 4 days. Most recently, IPSA Lock was updated on October 29, 2026 and KJCST on October 29, 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.*