# CatEyeSYNC

> App to control and customize CatEye Sync bike lights. (iPhone/iPad app by CatEye Co., Ltd..)

- Source: https://appshunter.io/ios/app/cateyesync/id1391517944 (this page in markdown: same URL + `.md`)
- Developer: [CatEye Co., Ltd.](https://appshunter.io/developer/438417879)
- Category: Sports
- Price: Free
- Rating: 1.80/5 from 12 App Store ratings · 56 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 44 MB
- Languages: American English, Japanese, Chinese (Simplified, China)
- Released: 2018-08-06
- Data updated: 2026-06-09
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/cateyesync/id1391517944/reviews.md

## What is CatEyeSYNC?

CatEyeSYNC™ App works with CatEye lights.

With this app, you can set up multiple Cateye Sync products to connect, customize light modes and view battery levels of each light.

## Key features

- Connect multiple lights
- Customize light modes
- View battery levels
- Works with CatEye Sync products

## Recent user reviews (10 of 56)

All indexed reviews: https://appshunter.io/ios/app/cateyesync/id1391517944/reviews.md

### 2/5 — App not connecting to lights on iOS

*2026-03-02, version 1.0.12*

The lights are not pairing with the app now. I have reset the lights, deleted and reinstalled the app. It finds the lights but they will not light up to finish pairing to show battery status.

### 3/5 — Bit Clunky, needs more time in the oven

*2026-01-14, version 1.0.11*

It does what it says on the tin but lacks basic logical features like a widget for quick access to power on/off, opening the app everytime is silly. Also grouping of lights by bike… the idea here is great, but they need to think more about the app in use and why app connectivity is utilised by their customers

### 3/5 — ペアリング

*2025-08-22, version 1.0.11*

購入後デバイスを追加に表示されず、レビューを見てもペアリングできない方がたくさんいらっしゃったので諦めていましたが、電源ボタンを10秒間長押しするとライトが10回点滅して、(ペアリング解除)その後はアプリに表示されペアリングできました。トラブルシューティングに記載した方がいいと思いました。
iphone15

### 3/5 — お困りの方

*2025-06-07, version 1.0.11*

当初iPhone13miniでペアリングできませんでしたが、一度Android機（当方はタブレットを使用）でペアリングしたのち、PCでファームウェアアップデートした所、iPhone13 miniでも無事にペアリングできました。
お困りの方はお試しください。

### 1/5 — Sync won’t Sync

*2025-01-23, version 1.0.11*

Just bought a sync core. Doesn’t sync. The app hasn’t been updated in 2 years. I should have read the reviews before buying it.

### 2/5 — Empty Promises

*2024-12-23, version 1.0.11*

No sync. Tried two different sets of lights. One set wasn’t even recognized and the other couldn’t be added. Don’t bother.

### 1/5 — アップデートしないアプリ

*2024-04-20, version 1.0.11*

iOSのVerについって行ってないのか、ライトとのリンクすらできない。
使い物にならないので、リンクができるライトもただ高いだけの製品となってしまっており、買う意味がない。

### 1/5 — Won’t sync to my iPhone

*2024-03-23, version 1.0.11*

Ok thankfully the lights work without the app.  Because I bought two of these things and neither will pair with my iPhone.

### 1/5 — ペアリング出来ない

*2024-03-23, version 1.0.11*

一度もペアリング出来たことがない

### 3/5 — 物は良いのに

*2024-02-10, version 1.0.11*

買った当初は、ライトシンク、ライトコア共に、携帯とのペアリング取れてルンルンで使用出来てのに、携帯〔iPhone〕のOSを最新のものに更新してから、ペアリング取れなくなってしまい、今は乗るたびに、🖐️で操作する始末。せっかくの良い商品が勿体ないです。

## Frequently asked questions about CatEyeSYNC

### What does the CatEyeSYNC app do?

The CatEyeSYNC app allows you to connect and control your CatEye Sync bike lights. You can set up multiple lights to work together, customize their lighting modes, and check the battery status of each individual light.

### What are the key features of CatEyeSYNC?

Key features include the ability to connect multiple CatEye Sync lights simultaneously, customize various light modes for different riding conditions, and easily view the battery levels of all connected lights.

### Is CatEyeSYNC free to use?

Yes, the CatEyeSYNC app is free to download and use. There are no in-app purchases or advertisements mentioned.

### What devices is CatEyeSYNC compatible with?

The app is designed to work specifically with CatEye Sync products. Compatibility with specific phone operating systems (iOS/Android) is not detailed in the provided description but is generally assumed for mobile apps.

### How can I use CatEyeSYNC to improve my cycling?

You can use CatEyeSYNC to create a synchronized lighting system for your bike, ensuring optimal visibility and safety. Customizing light modes allows you to adapt to changing light conditions or riding styles, while battery monitoring prevents unexpected power loss.

## Version history (last 5 releases)

### 1.0.12 — 2026-01-30

Bug fixed.

### 1.0.11 — 2022-10-04

Bug fixes.

### 1.0.10 — 2022-07-07

iOS 15 bug fix

### 1.0.8 — 2019-11-27

Improved screen layout.

### 1.0.7 — 2019-10-29

Support for iOS 13.

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## More apps by CatEye Co., Ltd.

- [CatEye STRADA Double Wireless Quick Start](https://appshunter.io/ios/app/cateye-strada-double-wireless-quick-start/id440483981)
- [STRADA WIRELESS 300 Quick Start](https://appshunter.io/ios/app/strada-wireless-300-quick-start/id440486845)
- [CatEye VELO Wireless+ Computer Quick Start](https://appshunter.io/ios/app/cateye-velo-wireless-plus-computer-quick-start/id440625524)
- [CatEye MICRO Wireless Quick Start](https://appshunter.io/ios/app/cateye-micro-wireless-quick-start/id513197876)
- [CatEye STRADA Digital Wireless HR Quick Start](https://appshunter.io/ios/app/cateye-strada-digital-wireless-hr-quick-start/id513475623)
- [STRADA WIRELESS SLIM Quick Start](https://appshunter.io/ios/app/strada-wireless-slim-quick-start/id615240080)

All apps by CatEye Co., Ltd.: https://appshunter.io/developer/438417879

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-09.*