In short
Rehearsio has no accounts and no server of ours. Your sheet music, your pencil marks, your notes, your recordings and your practice history are files on your own device. We cannot see them, and we could not hand them to anyone who asked.
Two things can travel, and only if you switch them on: a report when the app crashes, and a count of which features get opened. The switch is off when you install the app, so unless you go and turn it on, nothing leaves at all. Neither of the two carries your name, your files, or anything you wrote or played.
Who we are
Rehearsio is made by Mammad Mahmudzade in Germany — one person, not a company. In the language of data-protection law that person is the controller of the little we receive, and this page is the notice that law asks us to give you. The full postal address is in the Impressum.
For anything on this page, write to rehearsio@gmail.com.
What stays on your device
Everything you make in Rehearsio is stored on the device you made it on:
- the PDF scores you bring in — copied into the app, so they keep working when the original moves or is deleted
- pencil and highlighter marks, and any text you write on a page
- notes, tasks and the tags on them
- audio recordings of your practice, and the waveforms drawn from them
- your practice history — sessions, times, tempos, pieces, and the calendar and statistics built from them
- the photograph you chose as a profile picture, if you chose one
- your settings
None of it is sent to us. There is no account to sign into and no copy of your library anywhere except on your device — and wherever you have put a copy yourself.
The other side of that promise: if the device is lost, wiped or replaced, the library goes with it. We cannot restore it, because we never had it.
The app can put your whole library into a single file for you to keep somewhere else. It is worth doing before you need it.
What the app sends
Two things, and neither of them unless you allow it. One switch in the app’s settings governs both, and it is off when the app is installed — what follows describes what travels after you turn it on. This is the complete list, and it is short because the app has nowhere else to send anything: it has no account, no sync and no server holding your work.
- A report when the app crashes, so the fault can be found and fixed.
- A count of which features are opened, so we know which parts of the app the next month of work should go to.
Both are described in full below. Neither contains your files, your marks, your notes, your recordings, the names of your pieces, or any text you have typed.
Crash reports
When Rehearsio stops unexpectedly, it sends a report describing the failure: which part of the code stopped and how it got there, the version of the app, the model of the device, and the version of the operating system it runs.
It carries no name, no email address and no advertising identifier, and it contains none of your content — not a page, not a mark, not a note, not a second of audio.
The reports are handled for us by Sentry, which processes them on our instructions and for no other purpose. They are kept for 90 days and then deleted. Where the law asks us to name a basis for this, it is your consent — the switch you turned on — and you can take it back at any time by turning the switch off.
Sentry stores them on servers in the European Union, so a report does not leave it.
Which features get used
The app counts how often each of its parts is opened — the tuner, the metronome, the recorder, the library, the practice tracker, and so on.
What is counted is that a feature was used. What was inside it never is: not the piece, not the tempo, not the words of a note, not a second of audio. The counts carry a random number that stands for one sitting rather than for a person: it is made when you open the app, kept only in memory, and replaced after an hour of not being used. Nothing is written to your phone, so nothing is left there afterwards to recognise you by.
The counts are collected for us by Aptabase, on our instructions and for no other purpose, on servers in the European Union. They are kept for 12 months — long enough to see whether a part of the app is used more this winter than last — and then deleted.
One switch in the app’s settings governs both of these — the crash reports as well as the counts. It is off on a new installation: until you turn it on, neither is ever sent, and turning it off again stops both. Nothing else about the app changes either way.
Permissions the app asks for
Three, each asked at the moment it is first needed rather than when you open the app for the first time.
- Microphone — to record your practice and to hear your instrument for the tuner. The tuner keeps nothing: it listens and shows a pitch. Recordings become files on your device.
- Photos — only when you pick a profile picture. The one photograph you choose is copied into the app; nothing else in your library is read. Rehearsio never asks for the camera.
- Notifications — only when you set a reminder. Reminders are scheduled and shown by your own device. There is no push service, no token and no server involved.
Refusing any of them leaves the rest of the app working, and you can change your mind later in your device settings.
When you send something yourself
Rehearsio can hand a file to your device’s own share sheet: a recording for a teacher, a marked-up copy of a score, an export of your statistics, or the single-file copy of your whole library.
The app never does this on its own — it happens when you ask for it, and the app’s part ends the moment the share sheet opens. From there the file is in the hands of whatever you send it to: a messaging app, a cloud drive, an email. What that service does with it is governed by its own terms, not by this page.
Children
Rehearsio is for anyone learning an instrument, and it is built so that using it costs you nothing personal: there is no account, no name, no email address and no sign-in of any kind.
We do not knowingly collect personal information from anyone, of any age. If you are a parent or teacher and something on this page worries you, write to us at rehearsio@gmail.com.
Your rights
Depending on where you live, the law may give you the right to see what a company holds about you, to correct it, to have it deleted, or to object to its use.
The honest answer in our case is that we hold nothing that identifies you. Everything of yours is on your device, and the two things we receive carry no name and no way back to a person. There is nothing for us to look up and nothing to send you.
What you can do:
- Delete everything you have made — delete the app. That removes the library from the device. Copies you saved elsewhere are yours to delete too; we cannot reach them.
- Decide what gets sent — one switch in the app’s settings. It is off until you turn it on, and turning it off again stops both the crash reports and the counts.
- Ask us anything — write to rehearsio@gmail.com and a person will answer.
If you believe we have handled this badly, you may also complain to the data-protection authority where you live.
Changes to this policy
If what the app sends ever changes, this page changes before the version that does it is released, and the date at the top changes with it.
A change that means the app starts sending something new will be said inside the app as well as here. We will not quietly widen this list and leave you to notice.
How to reach us
Write to rehearsio@gmail.com. A person reads it — there is only one.
By post: the address in the Impressum.