Centi keeps your child’s growth data on your device. We do not run servers that receive it, and we never see it.
This policy explains how the Centi app for Android and iOS (“Centi”, “the app”) handles information. Centi is published by RBSoft (“we”, “us”). RBSoft is responsible for the processing described here as the data controller.
At a glance:
Everything you enter about your child stays in a database on your device. It is not sent to us or to anyone else.
| What | Details |
|---|---|
| Child profile | Name, gender, due date, date and time of birth, birth weight, birth length and head circumference |
| Measurements | Weight, height and head circumference, with the date and time of each entry |
| Settings | Measurement units (metric or imperial) and reminder preferences |
Export and import. You can export measurements as a CSV file and import a CSV file. You choose where the exported file goes. Once you save or share it, it is outside the app and outside our control.
Device backups. Your phone’s own backup can include Centi’s data. On Android this is Google’s backup to your Google account. On iOS it is an iCloud or computer backup. These backups are run by Google or Apple under your device settings, not by us.
Centi does not ask you to create an account.
Centi uses two Google services that receive device and usage data. Neither receives your child’s name, birth details or measurements.
| Service | Provider | What it receives | Why we use it |
|---|---|---|---|
| Firebase Analytics | Google Ireland Limited / Google LLC | An app instance ID; device model, operating system and app version; language; approximate country or region (derived from your IP address); first launch, sessions, time in the app and screens viewed; on Android, the advertising ID where your settings allow it | To understand how the app is used and to improve it |
| Google AdMob, with Google’s User Messaging Platform | Google Ireland Limited / Google LLC | Device identifiers (such as the advertising ID where allowed), IP address, device and app information, ad views and clicks, and your consent choices | To show ads that keep Centi free, and to record your ad consent |
Google processes this information under its own policies:
Centi is free and shows ads from Google AdMob. Where the law requires it, we ask for your consent before ads use your data.
Ads are never based on the information you enter about your child.
Centi asks only for what reminders, ads and analytics need. It does not access your contacts, photos, camera, microphone or precise location.
| Permission | Platform | Why |
|---|---|---|
| Notifications | Android, iOS | To show the measurement reminders you set |
| Run at startup, keep awake | Android | To restore your reminders after the phone restarts |
| Internet and network state | Android | To load ads and send analytics data |
| Advertising ID | Android | Added by the Google AdMob SDK, for ads as described above |
CSV export and import use the system file picker. Centi sees only the file you choose.
If you are in the EEA, the UK or Switzerland, the General Data Protection Regulation (GDPR) or its UK and Swiss equivalents apply. We rely on these legal bases:
| Processing | Legal basis |
|---|---|
| Personalised ads | Your consent (GDPR Art. 6(1)(a)), which you can withdraw at any time |
| Non-personalised ads | Our legitimate interest in funding a free app (Art. 6(1)(f)) |
| App analytics | Our legitimate interest in understanding and improving the app (Art. 6(1)(f)) |
| Recording your consent choices | Compliance with our legal obligations (Art. 6(1)(c)) |
The child profiles and measurements you enter never reach us, so we do not process them.
You control the data on your device and can delete it at any time.
Depending on where you live, you have these rights over your personal data:
You can exercise most of these yourself: edit or delete data in the app, export it as CSV, and change your ad choice in Settings. For anything else, contact us. We have no account linked to you, so we may need details from your device to find the data Google holds for you.
Centi is for adults: parents and caregivers who record their own child’s growth. It is not directed at children, and children should not use it.
The information you enter about your child stays on your device and is never sent to us, to Google or to advertisers. We do not knowingly collect personal data from children. If you believe a child has used Centi and that we hold data about them, contact us and we will delete it.
Your child’s data is as secure as your device. Use a screen lock, and keep exported CSV files somewhere only you can reach.
Data sent to Google travels over encrypted connections. Google may process it outside your country, including in the United States. For transfers from the EEA, the UK and Switzerland, Google relies on the EU-U.S. Data Privacy Framework and its extensions, and on the European Commission’s Standard Contractual Clauses.
We will update this policy when the app’s data practices change, for example when we add in-app purchases. The new version will be posted at this address with a new effective date. If a change is significant, we will also tell you in the app.
Effective date: 26 October 2026
RB Soft Kft
Hungary, 2330, Dunaharaszti, Pillangó street 16/1
Email: privacy@rbsoft.hu