Privacy policy
For the app The 100 Day Master’s Thesis Planner. Last updated 9 November 2026.
In short
- Everything you write in the app belongs to you. We only use it to make the app work for you.
- No ads and no tracking in the app. We never sell your data.
- Your pages are stored mainly on servers in the EU.
- We never contact your accountability partners.
- You can delete all your data and your account yourself in the app.
1. Who is responsible?
The app is developed and run by Studiebooster v/ Christian Belshaw-Jespersen, CVR (company reg. no.) 39347652, Florsgade 7, 1. th., 2200 Copenhagen N, Denmark, which is the data controller for the processing of your personal data. If you have questions about this policy or your data, write to info@studiebooster.dk.
2. What data do we process?
All data comes from you.
Your account
You log in with your email address. We send a one-time code to that address, and the code only works for a short time. We store your email address and when you created your account and last logged in.
Your plan and your daily pages
To build your plan, the app asks about things like your hand-in deadline, your page count, how far along you are, what you want to achieve and what could stop you. The app also stores what you write each day: your answers to the five questions, your tasks, your character count and your contract with yourself, including your name and your signature if you sign it.
This is stored in your account, so you have your pages on both your phone and your computer. A copy is kept in your browser’s local storage so the app also works offline and you stay logged in. This is necessary for the app to work and therefore doesn’t require consent. The app uses no other cookies.
Your accountability partners
If you add an accountability partner, the name and phone number are only stored on your own device. They are never sent to us, and we have no access to them. They are only used to open your own text or email app with a ready-made message, which you send yourself. If you switch devices, you’ll need to add your partners again.
Reminders in your calendar
When you add the reminders to your calendar, our server creates a calendar file from the times you’ve chosen and your language. The file contains no information about you. If you choose Google Calendar, we open Google Calendar with the reminder, and from there Google’s privacy policy applies.
Payment
If you buy full access, the payment is handled by Stripe. We don’t receive your card details. We receive a confirmation of the payment with the amount, a payment ID and the email address you paid with, and link it to your account. Stripe processes the payment details as an independent controller under Stripe’s privacy policy.
Testers and newsletter
If you sign up as a tester or for the newsletter, we store your email address and when and where you said yes. Our emails contain a tracking pixel and trackable links, so we can see whether an email is opened and which links are clicked.
Technical logs
Our servers briefly record ordinary technical information such as IP address and time for operational and security reasons.
What we don’t collect
The app uses no analytics tools, no advertising cookies and no tracking. We don’t use your location.
3. Purpose and legal basis
We process your account details, your plan, your daily pages and your payments in order to provide the app you’ve asked for (Article 6(1)(b) GDPR). We also keep payment records because the Danish Bookkeeping Act requires it (Article 6(1)(c)).
We process technical logs on the basis of our legitimate interest in running the app securely (Article 6(1)(f)).
We only use your email address for testers and the newsletter with your consent (Article 6(1)(a) and section 10 of the Danish Marketing Practices Act). You can withdraw your consent at any time via the link at the bottom of every email.
Your answers may say something about your studies and your worries, but we don’t ask for sensitive information such as health. Please don’t write that kind of information in the app.
4. Who processes the data for us?
We use a few data processors, which may only use the data to provide their service to us. We have data processing agreements with all of them.
| Provider | What they do | Where |
|---|---|---|
| Supabase Inc. | Database, login and login codes | Servers in the EU. Supabase is a US company, and its support staff may access data from the USA. |
| Vercel Inc. | Hosting the app and our server functions | USA |
| Klaviyo Inc. | Emails to testers and the newsletter | USA |
Transfers outside the EU
Supabase, Vercel and Klaviyo are US companies. Vercel and Klaviyo are certified under the EU-U.S. Data Privacy Framework, which the European Commission has approved. Supabase may transfer data to the USA and Singapore, and this is based on the European Commission’s standard contractual clauses. Write to us if you’d like a copy.
5. Do we share your data?
We never sell your data and don’t share it with anyone for marketing. If Studiebooster or the app is sold, your data may be transferred to the buyer, who must then follow this policy. We will notify you before this happens. We don’t read what you write in the app unless you ask us for help. If you share your goal or your update with others, you do it from your own phone, and you decide what to share and with whom.
6. How long do we keep your data?
Your account, your plan and your daily pages are kept for as long as you have an account. You can delete everything at any time in the app under Profile › Settings › Delete all data and account. Your account and everything you’ve written are then deleted immediately, including the copy in your browser. Database backups are deleted automatically after no more than 7 days.
We keep payment records for five years after the end of the financial year, as required by the Danish Bookkeeping Act. Your email address for testers and the newsletter is kept until you unsubscribe. After that, we only keep the fact that you’ve unsubscribed, so we don’t email you again. Technical logs are deleted automatically after no more than 7 days.
7. Do you have to give us your data?
You need to provide an email address to create an account, because it’s how you log in. Everything else is up to you, but without a hand-in deadline the app can’t build your plan.
8. Automated decisions
The app works out your plan and your writing goal from your own answers. We make no automated decisions about you and do no profiling.
9. Your rights
Under the GDPR, you have the right to access the data we process about you, and the right to rectification, erasure, restriction of processing, data portability and to object. If you’ve given consent, you can withdraw it at any time. This doesn’t affect processing that took place before you withdrew it. Write to info@studiebooster.dk if you want to use your rights. We reply within one month.
You can always object to processing we carry out on the basis of our legitimate interest.
You can complain to the Danish Data Protection Agency, Datatilsynet, Carl Jacobsens Vej 35, 2500 Valby, Denmark, dt@datatilsynet.dk, or to the data protection authority where you live.
10. Children
The app is for students in higher education and isn’t aimed at children.
11. The website
The website where you can read about the app has its own privacy policy and cookie policy.
12. Changes
If we update this policy, we publish the new version here with a new date. If the changes are significant, you’ll also be notified in the app.