# ZenTest-Smart Water Tester

> Smart Tester for pH/conductivity/TDS/Salinity/Resistivity/ORP/Temperature

Canonical page: [https://chrome-stats.com/d/com.zen.zentest](https://chrome-stats.com/d/com.zen.zentest)

## Overview

- **ID:** `com.zen.zentest`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** Apera Instruments
- **Category:** TOOLS
- **Downloads:** 14,394
- **Rating:** 4.90 / 5 (276 ratings)
- **Version:** 1.9.22
- **Last updated:** 2026-06-04
- **First published:** 2018-08-14
- **Publisher country:** US
- **Size:** 22 MB
- **Data as of:** 2026-09-17
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.zen.zentest)
- **Website:** [http://www.aperainst.com](http://www.aperainst.com/)
- **Privacy policy:** [https://aperainst.com/privacy-policy](https://aperainst.com/privacy-policy)

## Description

ZenTest-Smart Water Tester is a mobile app designed to connect via Bluetooth with ZenTest-enabled Smart Multi-parameter water testers. It offers professional-grade measurements for pH, conductivity, TDS, salinity, resistivity, ORP (redox), and temperature, making water quality analysis straightforward and efficient.

Key features include four display modes (Simple, Dial, Graph, Table) for versatile data visualization, a powerful cloud-based data logger supporting automatic/manual records, calibration info, linked assets, notes, photos, and GPS location. Users enjoy instant data sharing, guided calibration steps, two-way device control, smart self-diagnosis for troubleshooting, and customizable alarms for preset value ranges. ZenTest streamlines accurate water testing and data management for professionals and enthusiasts alike.

## Rankings

- #493,205 — Overall

## Permissions and access

### Permissions

- `android.permission.ACCESS_COARSE_LOCATION`
- `android.permission.ACCESS_FINE_LOCATION`
- `android.permission.ACCESS_NETWORK_STATE`
- `android.permission.ACCESS_WIFI_STATE`
- `android.permission.BLUETOOTH_ADVERTISE`
- `android.permission.BLUETOOTH_CONNECT`
- `android.permission.BLUETOOTH_PRIVILEGED`
- `android.permission.BLUETOOTH_SCAN`
- `android.permission.CAMERA`
- `android.permission.INTERNET`
- `android.permission.READ_EXTERNAL_STORAGE`
- `android.permission.READ_PHONE_STATE`
- `android.permission.RECORD_AUDIO`
- `android.permission.WAKE_LOCK`
- `android.permission.WRITE_EXTERNAL_STORAGE`
- `com.zen.zentest.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`

## Review summary

Users applaud the meter's accuracy and robust data management features, including data logging and alarms. However, the app is often criticized for frequent crashes, login problems, and loss of critical data. While recent updates addressed some Android 12 compatibility issues, many users still experience connectivity challenges and limited functionality outside visitor mode. Privacy concerns regarding background data usage have also been noted. Despite hardware praise, app stability and usability significantly impact overall user satisfaction.

### Pros

- Meter hardware works well and accurately measures pH, TDS, and conductivity.
- Data management functionalities help organize test data effectively.
- Data logger and reading alarm functions provide instant notifications on abnormal readings.
- Recent updates have improved app functionality and compatibility with newer Android versions.
- Ability to add photos to notes enhances record keeping.

### Cons

- App frequently crashes and has reliability issues, especially during login and account setup.
- Sign-in and account creation features often do not work; many users resort to visitor mode with limited functionality.
- Data loss and syncing problems cause missing or misplaced test records and categories.
- Compatibility issues persist on various Android devices, with some requiring workarounds like enabling location for Bluetooth connection.
- Background data usage and privacy concerns raised due to app running persistently and using a lot of data.

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Source: [Chrome-Stats](https://chrome-stats.com/d/com.zen.zentest)