# CRESTIN — user reviews > 13 indexed App Store user reviews of CRESTIN by 绪宗 马, rated 4.72/5 from 569 ratings. - Source: https://appshunter.io/ios/app/crestin/id1515882217/reviews - App overview in markdown: https://appshunter.io/ios/app/crestin/id1515882217.md - Rating breakdown: 5★ 475 · 4★ 61 · 3★ 13 · 2★ 6 · 1★ 14 ## What do users think of CRESTIN? Overall sentiment: negative **Pros** - 👍 User-friendly interface - 🎨 Great variety of colors - 💡 Music sync feature - 🔆 Dimmer functionality - 📱 Stable app performance (when working) - 🎯 Affordable pricing **Cons** - 🐛 Frequent connection drops - 🔌 Devices go offline constantly - ⚠️ Alexa integration broken - 🔄 Requires frequent resets - ⏱️ Delayed response between devices - 🔐 Privacy and security concerns - 📲 App compatibility issues - 🚫 No longer compatible with platforms **Commonly reported bugs** - Connection drops when app is closed - Unable to authorize or link with Alexa - Devices unresponsive when controlling multiple units together - Color change shows 'not connected' error - App not displaying camera icon on iPhone 12 - Updated app version not available in store - Odd emails received after setup (potential security breach) **Most requested features** - Multiple alarm ringtones with longer wake-up duration - Improved multi-device control synchronization - Music sync working across different devices - Music sync persistence when switching apps ## Most critical reviews (10 lowest-rated) ### 1/5 — Always losing connection *2025-02-03* What's the point in having an app to control the lights if it loses connection every time you close the app? My hardware is plugged in and "ready", however sitting right next to the lamp with my device inches away and somehow always manages to go offline. Can't control the lights remotely with the app, & due to them being offline 99% of the time trying to use a schedule is pointless. Should've just paid extra for govee bulbs ### 1/5 — STOPPED WORKING SINCE 11/3/2023 *2023-11-07* The light switch worked great with Alexa for a while but stopped working and won’t link at all. It just says unable to authorize or they’re having an issue. Now it’s absolutely garbage. Please fix ### 1/5 — Stopped working with Alexa *2023-11-06* Suddenly all my Crestin smart plugs would not respond to Alexa. I spent hours trying various solutions. After disabling the link from Alexa I am unable to link it back. It just keeps saying unable to link, try again. So I have to pull out my phone, open the Crestin app, and tap the device switch to use. Will have to replace these with another brand. ### 1/5 — No Longer Compatible with Alexa *2023-11-05* After a year of working fine, their bulbs are no longer compatible with Alexa. Reviews on the Alexa platform indicate others are having the same problem. Do not buy! ### 1/5 — Won’t work on I phone 12 *2022-08-07* This app is not showing a camera icon like they instructed on the user manual, that’s why I can’t use this app on a Crestins Home Camera ### 1/5 — Terrible app!!!!!!! *2022-01-25* Any time I try to change my color to any color it says not connected and go back to the home page😡😡😡😡😡😡😡😡 ### 2/5 — Was OKAY at best *2024-03-10* Had these for about two years, constantly need to be reset, and now they won’t work without the updated version of the app which isn’t available in the store. Just tired of them ### 2/5 — Great camera and app, but no privacy info? *2021-03-23* This camera and app are truly fantastic for the price. The two way audio abs pan features are way cool for such a low priced camera! However... After I set this camera up, I told my (adult) sons about my great find! They immediately expressed concern when they noticed no Privacy Policy was shared on the App Store by the developer. Initially I thought they were over reacting... but a day later I received an odd email from my email address - to my email address - in all Hanzi characters. It may have been just a weird coincidence, but it really gave me pause. I decided to unplug the camera and deleted the app. I’ve been keeping and eye on the app in the hopes the developer will post a privacy policy. Again, a great product for the price... but I do have some reservations about the security of my personal data and privacy. ### 3/5 — Owned for a year *2023-06-10* I bought two bulbs and have had them for a year now and they’ve been working great until recently. When controlling them individually they work fine, but now when I wanna control them together, one or the other will start to have a delay or even no response. Overall they work great, but I’m a bit disappointed that I no longer can control them together. ### 3/5 — Music sync doesn’t work when app isn’t open *2021-01-14* Great app, the colors look good and I love the dimmer too. The music sync also works well when playing music off of your phone however when you play music off of a different device it has some difficulty hearing it and the music sync also stops working if you go to a different app on your phone which is annoying. ## Most praised reviews (3 highest-rated) ### 5/5 — Great lights and app *2021-11-28* User friendly app as it never crashes and great variety of colors for the lights. ### 5/5 — Amazing app *2020-12-11* Amazing product and amazing app to go with it! ### 4/5 — Alarm *2020-12-09* Love the products. My mother has Alzheimer’s , getting up at night. Has been working great. The only thing I would suggest is to have different alarm ring tones with a longer time to wake me up. That’s the only reason I gave it a 4 star Other than that I would have given it a 5. --- *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 2026-06-10.*