# UUUSIM vs 4Star Track

The clearest difference is update cadence: UUUSIM at every 2 weeks against 4Star Track's every 2 months. 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.

UUUSIM ships an update every 2 weeks, 4Star Track every 2 months. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | UUUSIM | 4Star Track |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.1 (17 ratings)](https://appshunter.io/ios/app/uuusim/id6661026457/reviews)** | — |
| Number of ratings | **17** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 2 months |
| Monetization | Free | — |
| Size | 8 MB | 59 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [卫英 梁](https://appshunter.io/developer/6812174216) | [Aamir Rasool](https://appshunter.io/developer/1853762833) |

## What reviewers say

### UUUSIM

[App page](https://appshunter.io/ios/app/uuusim/id6661026457)

This app utilizes Bluetooth to enable your device to send and receive text messages, make phone calls, and access the internet. It leverages Bluetooth technology for seamless connectivity and functionality.

**Highlights:** Send and receive text messages via Bluetooth, Make phone calls through Bluetooth, Access 4G internet using Bluetooth, Utilizes Bluetooth standard protocol

**Features:** macOS Compatibility

**In-app purchases:** none


### 4Star Track

[App page](https://appshunter.io/ios/app/4star-track/id6757226276)

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

**In-app purchases:** none


## Frequently asked questions

### Is UUUSIM free?

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

### Is 4Star Track free?

4Star Track is free to download, with no in-app purchases.

### Do UUUSIM or 4Star Track have ads?

Neither UUUSIM nor 4Star Track shows ads.

### Which is updated more often, UUUSIM or 4Star Track?

UUUSIM ships an update every 2 weeks, and 4Star Track every 2 months. Most recently, UUUSIM was updated on November 4, 2026 and 4Star Track on October 31, 2026.

---

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