Cookie Policy
Effective: 9 October 2026
Cookies are small text files a website stores in your browser. This page lists the cookies Tempofin sets, what each is for, and how long it lasts. It goes with our Privacy Policy.
1. The short version
- English pages (/en/…) set two cookies of our own: one remembers your language, and one records where you first came from, used only to count which channels bring learners (section 4). You can refuse the second one. English pages do not load Google Analytics or advertising cookies.
- Signing in and using the app sets a few cookies that the app cannot work without.
- Our Vietnamese-language public pages (/vi/…) currently load Google Analytics through Google Tag Manager, which sets analytics cookies. These pages do not have a cookie consent banner yet.
- We do not use advertising cookies, and we do not sell data.
2. Cookies the service needs
These keep you signed in or let a feature you asked for work. You cannot switch them off in the app; if you block them in your browser, sign-in will not work.
| Cookie | What it does | How long |
|---|---|---|
| authjs.session-token (starts with __Secure- on HTTPS) | Keeps you signed in. Only readable by our server. | 30 days |
| authjs.csrf-token (starts with __Host-), authjs.callback-url | Protect the sign-in form and send you back to the page you wanted. | Until you close the browser |
| authjs.state, authjs.pkce.code_verifier, authjs.nonce | Used only while signing in with Google, to make sure the sign-in is genuine. | 15 minutes |
| tf_chon_phut | Remembers the minutes you chose to study today, so we do not ask again. Only readable by our server. | 2 days |
3. Preference cookie
| Cookie | What it does | How long |
|---|---|---|
| tempofin-ngon-ngu | Remembers your language (English or Vietnamese). It is set when you open one of our public pages (to that page’s language) or switch language, so the app and sign-up page then open in the same language. Without it, the app follows your browser’s language. | 1 year |
4. Where you came from, and the lessons-only landing page
All our public pages, in English and Vietnamese, set the first cookie below. The Vietnamese landing page for our lessons-only plan (/vi/hoc-tai-chinh) also sets the other two. All three are our own, none goes to a third party, and none contains your name or contact details.
| Cookie | What it does | How long |
|---|---|---|
| tf-nguon | Set the first time you open one of our public pages. Records where you came from: the link’s utm parameters if any, the domain of the referring page (not the full address), the first page you opened and when. Never overwritten later. If you then create an account, we copy this source to the account once. | 90 days |
| tf-nguon-chi-hoc | Remembers that you came from the lessons-only landing page. | 90 days |
| tf-uu-dai-chi-hoc | Stores, with a signature, the time a limited-time offer started for you, so the countdown does not restart. Only readable by our server. | 90 days |
How we use tf-nguon. Only to count, across all learners, how many people from each channel sign up, start studying and come back (statistics that tell us which channels to keep). We do not show it on anyone’s profile, and we do not use it to email, message or make offers to anyone.
Refusing it. If your browser sends a Global Privacy Control or Do Not Track signal, we do not set it. You can also refuse it here; this browser will then not record where you came from. If you already have an account and want the recorded source removed, write to us (section 8).
The two lessons-only cookies are set only on the Vietnamese landing page; our English pages, including /en/learn-finance, do not set them.
5. Analytics cookies
On our Vietnamese-language public pages (home, blog, contact and similar, under /vi) we run Google Analytics (measurement ID G-LP9Y5EQFD5) through Google Tag Manager to count page views and see where visitors come from. Google sets cookies in your browser for this and receives data about your visit; its servers are in the United States.
| Cookie | What it does | How long |
|---|---|---|
| _ga, _ga_LP9Y5EQFD5 | Google Analytics: tells visitors apart and counts visits and page views. | Up to 2 years (Google’s default) |
- Google Analytics is not loaded inside the learning area after you sign in, and it is not linked to your Tempofin account.
- It is not loaded on English pages.
- On these pages Analytics currently loads together with the page; there is no consent banner.
- To opt out, use Google’s opt-out add-on for your browser, or block cookies from this site in your browser settings.
6. Embedded video
If a lesson contains a video, it shows a still image first and loads the player from YouTube (privacy-enhanced mode) or Vimeo only after you press play. Those providers may then set their own cookies.
7. Managing cookies
Most browsers let you see, block or delete cookies in their settings. Blocking the cookies in section 2 will stop you from signing in. If you delete the cookie in section 3, the site goes back to your browser’s language until you choose again.
8. Changes and contact
We will update this page when we add or remove a cookie. Questions: hotro@tempofin.study.