Privacy Policy

Last updated: 29 August 2026

This policy covers the mobile app Taiwan Driving Test & Guide and the website taiwandrivingtest.com.

The short version

There is no account, no sign-up and no login, and we never ask for your name, your email or your phone number. Your studying stays on your own device. Three things do reach the outside world, and each has its own section below. Advertising, because the free version is paid for by ads. Purchases, if you choose to remove those ads. Notifications, but only if you switch them on yourself. And a problem report, on the days you decide to send one, which is the only thing in the app you can type and the only thing you type that we ever see.

What the app stores on your device

To let you pick up where you left off, the app saves the following in your device's local storage. It never leaves your phone, and it is not readable by us or anyone else:

Deleting the app removes all of it. You can also clear your exam history from inside the app at any time.

Advertising

The free version shows a banner while you practise, and a full-screen ad when you open a study topic, start a mock exam or leave the result of one. Never before you have seen your score, and never on the review, wrong-answer or bookmark sections. Those ads come from Google AdMob, and some of them are video. To serve them, and to count them and prevent fraud, Google receives technical data from your device such as your IP address, your device model and operating system, your approximate location derived from that IP address, and advertising identifiers. What Google does with it is governed by Google's own policy.

By default the app asks Google for non-personalised ads, which are chosen from the app's own context rather than from a profile of you. If you are in the European Economic Area or the United Kingdom, a Google consent form appears the first time the app loads an ad, and your answer decides whether ads may be personalised. You can change or withdraw that answer at any time from Settings, under "Ad privacy settings".

On iPhone and iPad, the system also asks once whether the app may use the advertising identifier to track you. If you say no, Google serves ads without it. You can change that answer later in the iOS Settings app, under Privacy & Security, Tracking.

Ads never appear over your exam results, and never in front of the review, wrong-answer or bookmark sections. The one-time purchase below removes them entirely.

Purchases

Removing the ads is a one-time in-app purchase. The payment itself is handled by Apple or by Google, never by us, and we never see your card. To remember that you paid, and to make Restore work on a second device or after a reinstall, purchases are managed through RevenueCat, which stores an anonymous identifier for your installation together with the store receipt, your country, and the app language and vehicle track you have selected. It is not tied to your name, and we cannot use it to identify you. Their policy is at revenuecat.com/privacy.

Notifications

Notifications are off until you turn them on with the switch in Settings, which is the only place the app ever asks. They exist because a licence takes months and the deadlines (the learner permit, the medical certificate, the exam date you set) are easy to miss.

There are two kinds, and they work differently. The exam reminders are scheduled by your own phone from the exam date you typed in, so nothing about that date is sent anywhere, they work with no internet connection, and they arrive even if you have not opened the app in weeks. Clearing the date, or turning the switch off, deletes them from the phone.

The other kind is a push, used only for something your phone cannot work out on its own, such as the government changing a rule of the exam. That one needs a service. If you switch notifications on, OneSignal receives the push token for your device and a set of labels describing where you are in the process, so that a reminder about exam day does not reach someone who has not booked one. Those labels are your language, your vehicle track, the exam date you entered, how far through the guide and the question bank you are, your accuracy and best mock-exam score, and whether you have removed the ads. They contain nothing you have written and no way to reach you outside the app. Turning the switch off stops all of it, and their policy is at onesignal.com/privacy_policy.

Reporting a problem

The app has a "report a problem" form, in Settings and next to every question. It is the way a wrong answer or a bad translation gets fixed, so it matters that it is easy to use, and it is the only moment the app sends us something you wrote.

When you send one, we receive your message, the language and vehicle track you are studying in, the app version and the kind of phone you are on, and, if the report came from a question, that question's number and the text of it as you were reading it. If you fill in the optional email field, we receive that too, and only so that we can reply. Nothing else about you or your studying is attached, and the form is never sent by itself, only when you press send.

The report is stored by us on Cloudflare and a copy is emailed to us through Acumbamail, our email provider. Your internet address is not stored, only an unreadable fingerprint of it that lets us stop the same sender flooding the form. If your phone has no connection when you press send, the report waits on your device and leaves the next time you open the app, and it is discarded if it has not managed to send within two weeks.

Reports are kept while the problem they describe is still worth acting on, and no longer than two years. If you sent one and want it deleted, write to hello@celiarozalenm.com from the address you used and it will be removed.

What the app does not do

Links to other websites

Two features open your device's browser on a site we do not control: the hazard-perception questions link to the official videos published by the Directorate General of Highways (MOTC), and the guide can open Google Maps to help you find a test centre. Once you leave the app, the privacy policy of that site applies instead of this one.

Read-aloud

The read-aloud button uses the text-to-speech engine built into your phone. Depending on your device and its settings, that engine may be provided by Apple or Google and may process the spoken text under their own privacy policies. The app itself sends nothing.

Your choices

To ask what is held about your installation, or to have it deleted, write to hello@celiarozalenm.com. Since there is no account, please say which device and roughly when you installed the app, so the right anonymous record can be found.

Children

The app is a study aid for a driving licence, an exam you must be 18 to sit, so it is not directed at children. Ads are requested with a general audience content rating, and the app does not knowingly collect anything from a child under 13. If you believe a child has used it, write to us and the associated data will be deleted.

Website

The website is a set of static pages. It sets no advertising or tracking cookies. It stores a single item in your browser's local storage, which remembers the language you were reading in so the homepage can send you back to it next time.

Visits are counted with Umami, an analytics tool we run on our own server (analytics.celiarozalenm.com). It uses no cookies and builds no profile of you. Each visit is recorded as the page viewed, the site that linked you here, and the country, browser, device type and operating system your browser reports, none of which identifies you personally. Your IP address is used only to work out the country and is not stored. On the licence checker, the country you look up is also counted, so we know which nationalities the tool is serving.

While the app is waiting to be published, some pages carry a form that asks for your email address so that we can tell you when it is out. It is the only thing this website ever asks you for, and it is optional. If you leave your address we store it, along with the language you were reading the site in and the country your visit came from, on Cloudflare, and we use it once, to send you a single message on the day the app is released. That message goes out through Acumbamail, our email provider, and carries a one-click unsubscribe link. Your address is never sold, never shared, and never added to any other list, there is no newsletter to be put on, and writing to hello@celiarozalenm.com at any moment has it deleted. The form itself disappears from the site the day the app goes live.

The podcast page carries a player for each episode. Nothing is downloaded until you press play, and when you do, the audio is requested from audio.taiwandrivingtest.com, which is our own storage on Cloudflare R2. No third party is involved, no account is needed, and there is no way for us to tell one listener from another. Subscribing through a podcast app instead means that app fetches the same files, and what it reports back is between you and them.

Some answer pages carry the government's own demonstration videos, which are published on YouTube. They are not embedded on arrival. What the page loads is a button, and the YouTube player is only created if you press it, so simply reading the page sends nothing to Google. If you do press play, the video is requested from youtube-nocookie.com and from that moment YouTube receives your IP address and can set storage in your browser, under Google's privacy policy. Not pressing play keeps the page free of any third-party request.

Question content

The questions come from the public examination banks published by the Directorate General of Highways, Ministry of Transportation and Communications (公路局, 交通部). This app is not affiliated with, endorsed by, or operated by any government body.

Changes

If this policy changes, the new version will be published on this page with an updated date above. Any change that affects what data the app handles will also be described in the app's release notes.

Contact

Questions about this policy: hello@celiarozalenm.com

The same address is where the about page invites corrections to the guide. If you write in, your message and your address are used to reply to you and to fix the guide, nothing else. They are not added to any mailing list and they are not shared.