# JRing vs DoseCalendar

The clearest difference is in-app purchases: JRing at none against DoseCalendar's 2. JRing also leads on ads (none vs shown) and iOS requirement (10.0 vs 15.1). DoseCalendar's advantage is update cadence (weekly vs monthly). On price and device support there is nothing between them.

Both are free to download. DoseCalendar sells 2 in-app purchases, starting at $4.99 per month. JRing asks for nothing beyond the download.

JRing ships an update monthly, DoseCalendar weekly. The most recent releases landed on October 1, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | JRing | DoseCalendar |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.3 (94 ratings)](https://appshunter.io/ios/app/jring/id6502148807/reviews)** | — |
| Number of ratings | **94** | — |
| Positive reviews | 19.2% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Weekly** |
| Monetization | Free | — |
| Size | 34 MB | 44 MB |
| Requires iOS | **10.0** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [小丽 张](https://appshunter.io/developer/1734826164) | [Tony AI](https://appshunter.io/developer/1771887878) |

## What reviewers say

### JRing

[App page](https://appshunter.io/ios/app/jring/id6502148807)

Track your daily activity, exercise, and sleep to achieve a healthier lifestyle. Monitor steps, calories burned, distance, and sleep patterns with detailed analysis and goal tracking. Offers multiple exercise modes and GPS tracking for your workouts.

**Highlights:** Daily goal tracking, Health data display (steps, sleep, exercise), Sports data analysis with GPS, Multiple exercise modes, Sleep pattern tracking, Calorie, pace, speed, distance tracking

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

**In-app purchases:** none

**What reviewers like**

- ⌚ Display screen feature is convenient and useful
- 🔋 Long battery life (up to 7 days on some models)
- 💪 Waterproof and durable hardware design
- 🏥 Syncs well with Apple Health app
- 📊 Tracks multiple health metrics (heart rate, sleep, steps, blood pressure)

**What reviewers complain about**

- 🐛 Frequent app crashes and freezing
- 📡 Bluetooth connection constantly drops and disconnects
- ❌ App fails to connect to ring despite Bluetooth pairing
- 🔄 Data sync issues and inconsistent data transfer
- ⏰ Inaccurate step counting and activity tracking

**Reported bugs**

- App crashes on startup (especially after iOS updates)
- Ring disconnects from app and won't reconnect without recharging
- Bluetooth pairing works but app connection fails
- Step counter shows drastically inaccurate numbers
- Sleep data not recording or showing incorrect times

**Requested features**

- Automatic periodic blood oxygen measurements (not just manual)
- Dark mode theme option
- Automatic low battery notifications
- Customizable display brightness settings in app (not just on ring)
- Lock screen widget for quick health data access


### DoseCalendar

[App page](https://appshunter.io/ios/app/dosecalendar/id6789894620)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DoseCalendar Plus Monthly | $4.99 | per month |
| DoseCalendar Plus Annual | $29.99 | per year |


## Frequently asked questions

### Is JRing free?

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

### Is DoseCalendar free?

DoseCalendar is free to download, with in-app purchases available.

### Do JRing or DoseCalendar have ads?

DoseCalendar shows ads; JRing does not.

### Which is updated more often, JRing or DoseCalendar?

JRing ships an update monthly, and DoseCalendar weekly. Most recently, JRing was updated on October 1, 2026 and DoseCalendar on September 18, 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.*