# ZRun vs SIMSON CASE

The clearest difference is rating: ZRun at 3.0 against SIMSON CASE's 2.1. ZRun also leads on ratings volume (373 vs 7) and review sentiment (35% vs 25%). 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.

ZRun holds the better App Store score, 3.0 against 2.1. That said, the two scores are not equally well evidenced: ZRun has 373 ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 35% of ZRun's written reviews are positive against 25% of SIMSON CASE's.

ZRun ships an update every 9 days, SIMSON CASE weekly. The most recent releases landed on October 13, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | ZRun | SIMSON CASE |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (373 ratings)](https://appshunter.io/ios/app/zrun/id6739612986/reviews)** | [2.1 (7 ratings)](https://appshunter.io/ios/app/simson-case/id6751013114/reviews) |
| Number of ratings | **373** | 7 |
| Positive reviews | **34.6% of reviews** | 25.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 days | **Weekly** |
| Monetization | Free | Free |
| Size | 232 MB | 228 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [深圳子俊科技有限公司](https://appshunter.io/developer/1782234380) | [Shenzhen United Power Technology Co., Ltd.](https://appshunter.io/developer/1447215451) |

## What reviewers say

### ZRun

[App page](https://appshunter.io/ios/app/zrun/id6739612986)

This app syncs with a smartwatch to display your health data, including steps, distance, and calories burned. It also tracks sleep quality and provides notifications for calls and messages. The application integrates with Apple Health for comprehensive health management.

**Highlights:** Step, distance, and calorie tracking, Sleep quality monitoring, Call and message notifications, Apple Health integration, Syncs with smartwatch

**In-app purchases:** none


### SIMSON CASE

[App page](https://appshunter.io/ios/app/simson-case/id6751013114)

Connect your phone case to customize dynamic watch faces. Design unique animated watch faces to express your style.

**Highlights:** Connect phone case, DIY dynamic watch faces, Customize animated designs, Personalize watch face style

**In-app purchases:** none


## Frequently asked questions

### Is ZRun free?

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

### Is SIMSON CASE free?

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

### Which has better reviews, ZRun or SIMSON CASE?

ZRun is rated higher. ZRun averages 3.0 out of 5 from 373 ratings, while SIMSON CASE averages 2.1 from 7 ratings.

### Do ZRun or SIMSON CASE have ads?

Neither ZRun nor SIMSON CASE shows ads.

### Which is updated more often, ZRun or SIMSON CASE?

ZRun ships an update every 9 days, and SIMSON CASE weekly. Most recently, ZRun was updated on October 13, 2026 and SIMSON CASE on September 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.*