# JJY Simulator vs CASIO WATCH+

The clearest difference is review sentiment: JJY Simulator at 68% against CASIO WATCH+'s 18%. JJY Simulator also leads on rating (4.2 vs 2.9) and iOS requirement (8.0 vs 12.0). CASIO WATCH+'s advantage is update cadence (monthly vs every 66 months). On price, ratings volume, 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.

JJY Simulator holds the better App Store score, 4.2 against 2.9. Both are backed by a comparable volume of ratings — 18 and 44 respectively. Written reviews point the same way: 68% of JJY Simulator's written reviews are positive against 18% of CASIO WATCH+'s.

JJY Simulator ships an update every 66 months, CASIO WATCH+ monthly. The most recent releases landed on October 18, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | JJY Simulator | CASIO WATCH+ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (18 ratings)](https://appshunter.io/ios/app/jjy-simulator/id431054911/reviews)** | [2.9 (44 ratings)](https://appshunter.io/ios/app/casio-watch-plus/id760165998/reviews) |
| Number of ratings | 18 | **44** |
| Positive reviews | **68.1% of reviews** | 17.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 66 months | **Monthly** |
| Monetization | Free | Free |
| Size | 1 MB | 69 MB |
| Requires iOS | **8.0** | 12.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [NeoCat](https://appshunter.io/developer/431054914) | [CASIO COMPUTER CO., LTD.](https://appshunter.io/developer/456569836) |

## What reviewers say

### JJY Simulator

[App page](https://appshunter.io/ios/app/jjy-simulator/id431054911)

This utility app simulates standard radio waves used by Japanese radio-controlled clocks. It outputs a 13.3kHz audio signal to synchronize your clock, allowing you to manually set the time.

**Highlights:** Simulates JJY standard radio waves, Outputs 13.3kHz audio signal, Synchronizes radio-controlled clocks, Uses 40kHz for time adjustment, Requires earphone connection

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

**In-app purchases:** none


### CASIO WATCH+

[App page](https://appshunter.io/ios/app/casio-watch-plus/id760165998)

Connect your compatible CASIO watch to your iPhone via Bluetooth to unlock enhanced Mobile Link functions. This application simplifies watch operations by allowing you to control them from your phone screen, enriching your overall experience.

**Highlights:** Bluetooth v4.0 connectivity, Mobile Link functions, Simplified watch operations, iPhone integration, Remote control via phone screen

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Works well with iPhone 6/6s
- 👍 Easy to use interface
- 👍 Able to sync watch settings
- 👍 Helpful support for clearing pairing info

**What reviewers complain about**

- 🐛 Connectivity issues with newer iPhones
- 🐛 App crashes frequently
- 🐛 Fails to connect to watch
- 🐛 Unreliable Bluetooth connection
- 🐛 Time/date sync problems

**Reported bugs**

- Compatibility issues with iOS updates
- Pairing problems with iPhone 6/6s/7
- Sync failures and connection drops
- Watch settings not transferring properly

**Requested features**

- Show watch battery status
- Add more world time cities
- Improve phone finder functionality
- Allow more control over alarms/timers


## Frequently asked questions

### Is JJY Simulator free?

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

### Is CASIO WATCH+ free?

CASIO WATCH+ is free to download, with no in-app purchases.

### Which has better reviews, JJY Simulator or CASIO WATCH+?

JJY Simulator is rated higher. JJY Simulator averages 4.2 out of 5 from 18 ratings, while CASIO WATCH+ averages 2.9 from 44 ratings.

### Do JJY Simulator or CASIO WATCH+ have ads?

Neither JJY Simulator nor CASIO WATCH+ shows ads.

### Which is updated more often, JJY Simulator or CASIO WATCH+?

JJY Simulator ships an update every 66 months, and CASIO WATCH+ monthly. Most recently, JJY Simulator was updated on October 18, 2026 and CASIO WATCH+ on October 17, 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.*