# AWARE Client V2

> Mobile context sensing framework for data collection and research studies. (iPhone/iPad app by Yuuki Nishiyama.)

- Source: https://appshunter.io/ios/app/aware-client-v2/id1455986181 (this page in markdown: same URL + `.md`)
- Developer: [Yuuki Nishiyama](https://appshunter.io/developer/975034759)
- Category: Utilities, Education
- Price: Free
- Rating: 4.00/5 from 10 App Store ratings · 3 written reviews indexed
- Age rating: 17+
- Requires: iOS 12.0 · 24 MB
- Languages: English, Japanese
- Released: 2019-03-16
- Data updated: 2026-06-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/aware-client-v2/id1455986181/reviews.md

## What is AWARE Client V2?

[About AWARE Client]
AWARE Client V2 is a sensing framework dedicated to an instrument, infer, log and share mobile context information, for smartphone users and researchers. AWARE captures hardware-, software-, and human-based data. 


[Individuals: Record your data]
This app allows us to collect user’s activity data (such as location, steps, and mobility types) automatically. As a part of the activity data, this app collects heart-rate, sleep, and workout data via HealthKit API if the user allows the app to access HealthKit API. In addition, By using the AWARE Dashboard, you can enable or disable sensors.  Privacy is enforced by design, so AWARE does not log personal information, such as phone numbers or contacts information. Also, the data is saved locally on your mobile phone temporarily. AWARE uploads the data to the AWARE server automatically if the device has a Wi-Fi network and is charged the battery.


[Scientists: Run studies]
Running a mobile-related study has never been easier. Install AWARE to the participants' phone, select the data you want to collect and that is it. If you use the own AWARE server, you can set a mobile questionnaire.   


[How to use AWARE Client iOS]
1. Set a study on AWARE Dashboard
1-1. Please access to AWARE Dashboard by a web browser Make a study by "Create Study" button
1-2. Select required sensors from a sensor list for your study
1-3. Make a QR code by "Show QRcode" button

2. For joining the study, please read the QR code by a QR code reader on the AWARE client

3. AWARE collects and uploads your contexts in the background automatically

4. You can quit the study by 'Quit Study' button

[Supported Sensors]
AWARE allows us to collect the following sensor data:
- Location (GPS, Barometer, Wi-Fi, and Bluetooth)
- Motion (Accelerometer, Gyroscope, Gravity, Linear Accelerometer, Magnetometer, and Activity Recognition)
- Ambient Noise (Audio Features)
- Device Usage (Screen State and Phone Call Events)
- Network State (Wi-Fi or Mobile Network)
- Timezone
- Weather Data (from Open Weather Map)
- BLE Devices (heart rate)
- HealthKit
- Calendar Events
- Web APIs (Fitbit)
- ESM: Experimental Sampling Method (Mobile Questionary)

** NOTE **
This application uses a location sensor in the background. Continued use of GPS running in the background can dramatically decrease battery life.
In addition, this app may use your location even when it isn’t open, which can decrease device battery life.

## Key features

- Automatic data collection (location, steps, mobility)
- HealthKit integration for heart-rate, sleep, and workouts
- Customizable sensor selection via AWARE Dashboard
- Privacy-focused design, no personal information logged
- Background data collection for mobile studies
- Support for various sensors including GPS, motion, and audio

## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/aware-client-v2/id1455986181/reviews.md

### 3/5 — Storage filler

*2023-02-23*

I have to keep the app running and open in the background constantly for my study, but it’s literally eating my storage. How do I make it not do that? I keep running out of storage and am being forced to delete things from my phone.

### 5/5 — Works well

*2022-01-31*

No issues with battery life in this version in the study we are using it for.

### 3/5 — Battery eater

*2020-07-01*

This app overheats my iPhone battery

## Frequently asked questions about AWARE Client V2

### What kind of data does AWARE Client V2 collect?

AWARE Client V2 collects a wide range of mobile context data. This includes location (GPS, Wi-Fi, Bluetooth), motion (accelerometer, gyroscope), device usage (screen state, calls), network state, and can integrate with HealthKit for heart rate, sleep, and workout data.

### Is AWARE Client V2 suitable for scientific research?

Yes, AWARE Client V2 is designed for researchers to easily run mobile-related studies. You can select specific data to collect, set up mobile questionnaires via the AWARE Dashboard, and participants can join studies by scanning a QR code.

### How does AWARE Client V2 handle user privacy?

Privacy is a core design principle. AWARE Client V2 does not log personal information like phone numbers or contacts. Data is saved locally first and only uploaded to the AWARE server when the device is on Wi-Fi and charging.

### Can I control which sensors AWARE Client V2 uses?

Yes, you can enable or disable specific sensors through the AWARE Dashboard. This allows you to customize the data collection to suit your needs or the requirements of a study.

### Does AWARE Client V2 have ads?

No, AWARE Client V2 does not contain advertisements. It is a free application focused on data collection and research.

### What devices is AWARE Client V2 compatible with?

AWARE Client V2 is compatible with iPhone, iPad, and iPod devices. It requires iOS 17+ and is available for users aged 17 and older.

### How often is AWARE Client V2 updated?

The latest version of AWARE Client V2 is 1.14.2, last updated on July 10, 2025. Updates are released to improve functionality and add new features.

### What are the potential impacts of using AWARE Client V2?

Continued use of background location sensors can significantly decrease battery life. The app may use your location even when it's not actively open, which can also impact device battery.

## Version history (last 5 releases)

### 1.14.2 — 2025-07-10

Fixed minor issues

### 1.14.1 — 2023-04-17

- Support new data types on HealthKit
- Fix minor issues

### 1.12.2 — 2022-03-23

Fix a minor issue on web page-based ESM.

### 1.12.1 — 2021-09-05

Supports motion sensor on AirPods Pro/Max

### 1.11.2 — 2020-08-14

Modified a trigger for alerting less free space of the user's smartphone. The alert is fired when free space is less than 200 MB.

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## More apps by Yuuki Nishiyama

- [STOP-PD](https://appshunter.io/ios/app/stop-pd/id1406381487)
- [eSense Client](https://appshunter.io/ios/app/esense-client/id1494692894)
- [SelfGuard](https://appshunter.io/ios/app/selfguard/id1507750703)

All apps by Yuuki Nishiyama: https://appshunter.io/developer/975034759

## Related topics

[yuuki nishiyama](https://appshunter.io/ios/topics/yuuki-nishiyama) · [aware](https://appshunter.io/ios/topics/aware)

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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 2026-06-10.*