# J2K Browser vs あんしんフィルター for J

The clearest difference is update cadence: あんしんフィルター for J at every 6 months against J2K Browser's every 143 months. あんしんフィルター for J also leads on iOS requirement (9.0 vs 15.5). On price, 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.

J2K Browser ships an update every 143 months, あんしんフィルター for J every 6 months. The most recent releases landed on May 16, 2026 and June 27, 2026 respectively.

## The numbers

| Metric | J2K Browser | あんしんフィルター for J |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | — | No |
| Update frequency | Every 143 months | **Every 6 months** |
| Monetization | — | Free |
| Size | 30 MB | 3 MB |
| Requires iOS | 15.5 | **9.0** |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Jae Gwang Lee](https://appshunter.io/developer/567390705) | [KDDI CORPORATION](https://appshunter.io/developer/448137434) |

## What reviewers say

### J2K Browser

[App page](https://appshunter.io/ios/app/j2k-browser/id567390702)

**In-app purchases:** none


### あんしんフィルター for J

[App page](https://appshunter.io/ios/app/for-jcom/id1444573440)

This free filtering app for J:COM MOBILE users protects children from inappropriate websites and app usage. It allows parents to set filtering levels, block specific content, and manage usage times remotely. Ensure your child's safe online experience with customizable controls.

**Highlights:** Web filtering for inappropriate content, App usage blocking, Adjustable filtering intensity by age, Remote management of settings, Set internet and app usage times

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is J2K Browser free?

J2K Browser is free to download, with no in-app purchases.

### Is あんしんフィルター for J free?

あんしんフィルター for J is free to download, with no in-app purchases.

### Which is updated more often, J2K Browser or あんしんフィルター for J?

J2K Browser ships an update every 143 months, and あんしんフィルター for J every 6 months. Most recently, J2K Browser was updated on May 16, 2026 and あんしんフィルター for J on June 27, 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.*