Privacy Policy

Last updated: 1 October 2026

FollowUp One is an Android app that reminds real-estate salespeople of their client calls and property viewings. It is provided by ESTATEOS, whose official website is estateoseg.com. This page explains what data the app uses, where it is stored, and how you stay in control of it.

Your client data stays on your phone

Client names and numbers, projects, notes, call results, follow-up dates and deals are stored in a database inside the app, on your phone only. They are not sent to our servers or to anyone else. A backup is made only when you ask for one, and it is saved wherever you choose.

Permissions the app asks for

• Contacts: when you pick a client from your contacts. The app reads only the name and number you picked, on the phone.
• Phone and call log (optional): for the “result after every call” feature. The app compares the numbers in your calls with your clients’ numbers on the phone itself, so it can ask you how a call went. The call log is never sent anywhere, and the only thing kept from it is the time of your last contact with a client, in that client’s record on your phone. You can turn this feature off in the app’s settings.
• Notifications, alarms and showing on the lock screen: so a reminder rings on time, even when the phone is locked.
• Files: when you import a client sheet or choose a transfer screenshot. The app opens only the file you choose.
• Internet: to confirm your number, check your subscription status, and send a subscription request.

Data stored on our server

For the free trial, subscriptions and invites, we store only the following:

• Your phone number: the WhatsApp number you sent the confirmation message from.
• An identifier for the app on your phone: a random number, unrelated to who you are, that links the app to your account.
• Your account status: the start and end dates of your trial and subscription.
• Invites: your invite code; the number of the colleague who invited you, if you entered their code; and a single fact that you have reached 3 or more clients (not how many, and none of their details), so your colleague can get their reward.
• Subscription requests: the transfer screenshot you send, the number you transferred from if you enter it, and the request’s date and status. Only the service owner sees the screenshot, to check the transfer.

The confirmation message reaches us through Meta’s WhatsApp Business Platform. From it we take only the sender’s number and the code. The code expires after 20 minutes. We don’t reply to the message, and we don’t use the number for marketing messages.

Who helps us run the service

• Supabase: the accounts database and storage for transfer screenshots, on servers in Germany (Frankfurt).
• Meta (WhatsApp Business): receiving the number confirmation message.
• Cloudflare: hosting this website and the app file.

We don’t sell data, there are no ads in the app, and we share data only with these services, and only as much as they need.

How long we keep data, and deleting it

We keep your account data for as long as your account exists. You can ask us to delete your account and all its data from our server at any time on the Delete account page; it is deleted within 30 days. The client data on your phone is deleted when you uninstall the app or clear its data.

Security

The connection between the app and the server is encrypted. Each user can reach only their own account, and transfer screenshots are kept in private storage that isn’t open to anyone. You can also lock the app itself with your fingerprint or screen lock, from its settings.

Children

The app is made for people working in real-estate sales and is not intended for anyone under 18.

Changes to this policy

If we change anything important here, we’ll update the date above and tell you in the app.

Contact us

Any question about your data: support@estateoseg.com