# JP Smart SIM vs KUROFUNЕ Work

The clearest difference is iOS requirement: JP Smart SIM at 12.0 against KUROFUNЕ Work's 15.1. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on September 19, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | JP Smart SIM | KUROFUNЕ Work |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Size | 115 MB | 36 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [DXHUB INC.](https://appshunter.io/developer/1134415171) | [KUROFUNE Inc.](https://appshunter.io/developer/1637786694) |

## What reviewers say

### JP Smart SIM

[App page](https://appshunter.io/ios/app/jp-smart-sim/id1474192708)

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

**In-app purchases:** none


### KUROFUNЕ Work

[App page](https://appshunter.io/ios/app/kurofun-work/id1637786692)

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

**In-app purchases:** none


## Frequently asked questions

### Is JP Smart SIM free?

JP Smart SIM is free to download, with no in-app purchases.

### Is KUROFUNЕ Work free?

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

### Do JP Smart SIM or KUROFUNЕ Work have ads?

Neither JP Smart SIM nor KUROFUNЕ Work shows ads.

### Which is updated more often, JP Smart SIM or KUROFUNЕ Work?

JP Smart SIM ships an update every 2 weeks, and KUROFUNЕ Work every 2 weeks. Most recently, JP Smart SIM was updated on September 19, 2026 and KUROFUNЕ Work on September 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.*