Privacy Policy
Last updated: 16 July 2026
This policy explains what the OneApp mobile app (Android package app.rork.onedevice_link_app, and its iOS equivalent) does with your data. It is written to describe what the app actually does, feature by feature.
The short version
OneApp has no user accounts and no login. We do not run a server that stores your personal data. Almost everything the app records about you — your health readings and your voice analysis results — stays on your own device and is deleted when you uninstall the app.
There are exactly two exceptions, and both are described in detail below: your voice recording is sent to our speech-analysis provider to be analysed, and your billing details are handled by Stripe if you buy a subscription.
We do not use any advertising, analytics, or tracking SDKs. We do not sell your data. We do not profile you for advertising.
What we handle, at a glance
| Data | Used for | Where it goes |
|---|---|---|
| Voice recording | Analysed to estimate your emotional state and suggest a frequency program | Sent to audEERING GmbH for analysis; audio file stays on your device |
| Voice analysis scores | Shown on the Voice Analysis screen and used to pick a recommended program | Stored only on your device |
| Health & fitness data | Heart-rate variability readings and personalised recommendations | Stored only on your device; never transmitted |
| Billing email & payment details | Processing and managing your subscription | Collected and stored by Stripe; never stored by us |
1. Voice recordings
When you start a voice check-in, the app records up to 10 seconds of audio using your microphone. The app only records when you explicitly tap to start a check-in. It does not listen in the background, and it does not record at any other time.
What happens to the recording
- The recording is saved to the app's private storage area on your device.
- It is uploaded over an encrypted (HTTPS) connection to audEERING GmbH, a speech-analysis company based in Germany, which analyses it and returns a set of scores. This is the only time your audio leaves your device.
- Only the resulting scores are saved by the app — the estimated energy and alignment values, plus pitch, loudness, speaking rate, intonation, and a recording-quality measure. These scores are stored on your device and nowhere else.
- We do not operate any server that receives or stores your audio.
Retention — please read
To be straightforward with you: the audio file itself currently remains in the app's private storage on your device after analysis. The app does not automatically delete it. These files are private to the app and are not readable by other apps, but they do accumulate over time.
You can remove them at any time by clearing the app's storage in your device settings, or by uninstalling the app — see Data deletion. We treat this as a known limitation that we intend to improve.
audEERING processes the audio in order to return your results. Their handling of the audio they receive is governed by their own terms and privacy policy. If you would like us to raise a specific question with them on your behalf, contact us at appdev.kodxsystem@gmail.com.
2. Health and fitness data
With your permission, OneApp reads health data from Health Connect on Android and Apple HealthKit on iOS. Depending on what you allow, this can include heart rate, resting heart rate, heart-rate variability, steps, and exercise sessions.
This data is used for one purpose: to show your HRV readings and to personalise the frequency program the app recommends. It is stored only on your device and is never transmitted to us or to anyone else.
In line with the Health Connect Permissions policy, we confirm that:
- We never use health data for advertising or marketing.
- We never sell health data, or share it with data brokers.
- We only request the health permissions needed for the features described here.
- Health data is not transferred off your device by the app for any purpose.
You can withdraw these permissions at any time in Health Connect (Android) or in Settings → Privacy & Security → Health (iOS). The app keeps working without them; it simply will not show HRV-based recommendations.
About the location permission
The Android build declares a location permission. This is required by Health Connect in order to support exercise-route data — it is not used to track you. The app does not request your location, does not collect it, and does not transmit it.
3. Subscriptions and payment
If you purchase a subscription, checkout is handled entirely by Stripe on their own hosted page. Stripe collects your email address and payment details in order to process the payment.
Your card details never pass through the app and are never seen or stored by us.The app only asks Stripe whether a subscription is currently active, and may display the email address associated with it. Stripe's handling of your data is governed by Stripe's Privacy Policy.
4. Who we share data with
We do not sell your personal data, and we do not share it for advertising. Data is shared only with these two providers, only for the purposes above:
- audEERING GmbH (Germany) — receives your voice recording in order to analyse it and return your scores.
- Stripe — receives your email and payment details if you subscribe.
We may also disclose information if we are legally required to do so, for example by a valid court order.
5. Permissions the app requests
- Microphone — to record your voice check-in. Only while you are actively recording.
- Health data — to read HRV and related readings, as described above.
- Vibration— to deliver the frequency programs through your phone's vibration motor.
- USB — to communicate with OneDevice hardware, if you connect it.
- Internet — to send your voice recording for analysis and to check subscription status.
6. Children
OneApp is not directed at children under 13, and we do not knowingly collect data from them. If you believe a child has provided us with personal data, contact us and we will delete it.
7. Your rights and your choices
Because your health readings and voice results live on your own device, you are in direct control of them: clearing the app's storage or uninstalling the app erases them. Full instructions are on our Data deletion page.
Depending on where you live, you may have rights under laws such as the GDPR or the CCPA to access, correct, export, or delete personal data held about you, and to object to its processing. The main data held off your device is your Stripe billing record. To exercise any of these rights, email appdev.kodxsystem@gmail.com.
8. Security
Your voice recording is transmitted over an encrypted HTTPS connection. On-device data is held in the app's private storage, which other apps cannot read. No method of transmission or storage is completely secure, but we take reasonable steps to protect your information.
9. Changes to this policy
If we change this policy, we will update the “Last updated” date above. Significant changes will be communicated in the app.
10. Contact
OneDevice
Email: appdev.kodxsystem@gmail.com