# Limit Smart vs ZDRing

The clearest difference is rating: ZDRing at 5.0 against Limit Smart's 2.0. Limit Smart's advantage is iOS requirement (13.0 vs 15.0). On price, ratings volume, update cadence and ads there is nothing between them.

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

ZDRing holds the better App Store score, 5.0 against 2.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Both ship on a similar rhythm, roughly every 6 weeks. The most recent releases landed on August 22, 2026 and September 2, 2026 respectively.

## The numbers

| Metric | Limit Smart | ZDRing |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (1 ratings)](https://appshunter.io/ios/app/limit-smart/id6503285074/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/zdring/id6745533781/reviews)** |
| Number of ratings | 1 | 1 |
| Positive reviews | 57.1% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | Every 6 weeks |
| Monetization | Free | Free |
| Size | 226 MB | 287 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Time Products Ltd](https://appshunter.io/developer/1658302548) | [Shenzhen Zhongdong Technology Co., Ltd.](https://appshunter.io/developer/1669208809) |

## What reviewers say

### Limit Smart

[App page](https://appshunter.io/ios/app/limit-smart/id6503285074)

This app helps you monitor your health and fitness activities. It tracks steps, calories, sleep, and heart rate, while also offering sports tracking and customizable watch faces. It syncs data with Apple Health for a comprehensive overview.

**Highlights:** Step and calorie tracking, Sleep analysis, Heart rate monitoring, Sports activity tracking, Syncs with Apple Health, Customizable watch dials

**Features:** Vision Pro support

**In-app purchases:** none


### ZDRing

[App page](https://appshunter.io/ios/app/zdring/id6745533781)

This app works with smart rings to monitor your sports performance in real time. It tracks steps, distance, calories burned, and sleep quality, integrating with Apple Health.

**Highlights:** Real-time sports performance monitoring, Step, distance, and calorie tracking, Sleep quality monitoring, Apple Health integration, Works with smart rings

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

**In-app purchases:** none


## Frequently asked questions

### Is Limit Smart free?

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

### Is ZDRing free?

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

### Which has better reviews, Limit Smart or ZDRing?

ZDRing is rated higher. Limit Smart averages 2.0 out of 5 from 1 ratings, while ZDRing averages 5.0 from 1 ratings.

### Do Limit Smart or ZDRing have ads?

Neither Limit Smart nor ZDRing shows ads.

### Which is updated more often, Limit Smart or ZDRing?

Limit Smart ships an update every 6 weeks, and ZDRing every 6 weeks. Most recently, Limit Smart was updated on August 22, 2026 and ZDRing on September 2, 2026.

---

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