# 3M™ Purification Expert — user reviews

> 13 indexed App Store user reviews of 3M™ Purification Expert by 3M Company, rated 2.00/5 from 4 ratings.

- Source: https://appshunter.io/ios/app/3m-purification-expert/id1172291477/reviews
- App overview in markdown: https://appshunter.io/ios/app/3m-purification-expert/id1172291477.md
- Rating breakdown: 5★ 1 · 4★ 0 · 3★ 0 · 2★ 0 · 1★ 3

## Newest reviews (3 of 13)

### 1/5 — 畫面不正確及推右刪除不到，請盡快修正

*2020-02-08, version v2.1.1*

畫面不正確及推右刪除不到，請盡快修正

### 1/5 — The app just doesn’t work in iOS 13

*2019-11-11*

Whenever you try to pair a device, it just cannot passed the correct WiFi SSID to the pairing process. All it said is the SSID is Wi-Fi, but actually there aren’t any other WiFi with such SSID. No wonder it can’t pair any device.

### 1/5 — Hard to link to the device

*2018-12-29*

It’s very hard to link to the device, I tried several times, press 5 seconds of the power btn to the setup mode, and use the app to link, feel weird, but failed each time.

## Most critical reviews (10 lowest-rated)

### 1/5 — 2025年開始又連接唔到

*2025-10-31, version 3.1*

買3M呢部清新機就係因為有隻app控制。但問題係隻app用唔到嘅日子多過用到。咁簡單嘅嘢唔去做好，同失實宣傳冇分別。根本就係騙子。

### 1/5 — Useless, Cannot Add Devices

*2022-03-07*

Unable to add devices.  The device can enter the pair state, but is never configured.

Attempting Manual, the distribution network is never created or found it on iOS15.

The QR Code on the device returns 'Invalid Code'

This app is worthless if the devices cannot be configured. It should be removed from the AppStore and the devices should not be sold as smart devices.

### 1/5 — 看不到实时数据了！

*2021-09-19, version 2.9*

以前可以用，去年开始用不了， Apple手机无法连接！

### 1/5 — What kind of high tech company that even can’t make an usable app

*2021-05-02, version 2.9*

The earlier version of this app didn’t work smooth before. After update, can’t feel the app not smooth anymore because it even does not work. Can’t register. Can’t receive sms verification code. Even you receive one, it won’t work. Amazing 3M!

### 1/5 — 一直hold 住係 83% 😂 到2046?

*2021-04-18, version 2.9*

幾時先可以正常使用？

### 1/5 — 完全沒有用的一個apps

*2021-02-13, version 2.9*

使用 KJ455F-6 超過一年，在這一年內，即使此apps更新了兩次版本，仍無法跟我的 KJ455F-6 連線，決定刪除此apps.

請 3M 先測試好產品後才讓消費者使用，真讓人失望！

### 1/5 — 其實有冇人係成功連到架？

*2020-08-05, version 2.6*

我冇辨法連到！

### 1/5 — 新版本根本就用唔到

*2020-05-28, version 2.6*

之前仲好地地，新版本後根本連接唔到，永遠去到83%就停，點攪呀！

### 1/5 — 完全用不了，怎么都连不上，垃圾

*2020-05-28, version 2.6*

完全用不了，怎么都连不上，垃圾

### 1/5 — KJ455F-6

*2020-02-08, version v2.1.1*

我用 iPhone 8 Plus 試咗好多次，個app都link唔到部 KJ455F-6 air purifier，我已經跟足指示做，都唔得！我就係見有app先買！！點知根本用唔到！！早知佢個app廢嘅就買Amway Atmosphere Sky或者Dyson Cryptomic!

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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 2026-06-23.*