deltaPlus · SAT

Privacy Policy

Effective and last updated October 13, 2026.

This policy explains what the deltaPlus™ SAT® app, this website, and our bootcamps collect, why, who else handles it, how long we keep it, and how you can see or delete it.

1. Who we are

deltaPlus Learning LLC (“deltaPlus,” “we”) is a Massachusetts company. We make the deltaPlus SAT app for iPhone, run this website, and teach SAT bootcamps online. Questions about privacy go to info@deltapluslearning.com, or by mail to deltaPlus Learning LLC, 82 Wendell Ave, Suite 100, Pittsfield, MA 01201.

2. The short version

Your account keeps what the app needs to work for you: your email, a username, your birth year, your progress, and your results, question by question.
You can make the same account on this website, for a free analysis of a practice test. It is the account the app opens.
We don’t sell your information, we don’t show ads, and we don’t track you across other apps or websites. The app contains no analytics or advertising code.
Apple handles every purchase in the app. We never see your card.
You can delete your account in the app at any time.
The app is for students 13 and older.

3. What your account keeps

Your account is stored for us by Google Firebase, in the United States. It holds:

Your account details: your email address, your username, the picture you chose, the year you were born, and when you joined. When you last changed your username or picture, it keeps when, and the time zone your phone was set to, so that the once-a-day limit follows your own midnight.
Your plan: whether you have the Plus or Premium plan, a free day of the Plus plan, or a free week of the Premium plan, and when it ends.
Your bootcamp group, if you’re in a bootcamp, so the app’s calendar shows your group’s sessions. We add it; you can’t change it in the app.
Your progress in each workbook: your checkpoint and final-test scores, your best scores, how many tries you have taken, when, and the time zone your phone was set to, so that the one-a-day limits follow your own midnight. It also keeps which workbook you opened last, so the workbook map shows the picture you chose where you left off.
Your results, question by question, for every practice test, daily exercise, Question of the Day, targeted practice set, quiz, checkpoint, and final test you finish: the answer you chose, whether it was right, how long you spent, whether you answered within the time allowed, what kind of question it was, the kind of mistake each wrong answer stood for, and the extended-time setting you chose, if any. For a practice test it also keeps the section scores you entered and the date you took the test.
Your SAT dates: the test dates you mark, any scores you add to them, and your registration-reminder settings.
Which trend notices the app has already shown you, so it doesn’t repeat them.
The reading passages and grammar questions you’ve finished, so you aren’t given the same one twice. Only our grading service writes this list.
Your purchases: when you buy a plan or a practice test, Apple confirms the purchase to us, and we keep a record of what you bought, when, and when it ends. We never receive your card number or your Apple Account details.
Your practice test analyses: which official practice tests you’ve unlocked, and how; whether you’ve used your free analysis; and, on the Plus plan, the month you last used its analysis. To keep the free analysis to one per person, we keep a one-way code made from your email address, never the address itself.

We use what your account holds to run the app for you and to improve it, for example to find questions that are harder than they should be. We email you about your account, such as a reminder before a plan renews, and when you write to us.

If you email us to ask for a good-luck card before your test, or for a 100+ Club shirt, we use the mailing address you send only to mail it, and delete it once it’s mailed.

If you send us your words about the app or a bootcamp, we share them only after a yes on our quote permission form, which a parent or guardian fills in for a student under 18. Google Forms and Google Sheets keep the form for us, and we keep it while we use the words and for three years after.

4. What stays on your phone

Your settings (appearance, text size, sounds, and reminders), copies of your recent results so they open quickly, any work you haven’t finished, and, on the Premium plan, up to three daily exercises saved for use without a connection. Deleting the app deletes all of it from the phone.

5. What the app sends, and what our servers keep

Grading. When you grade a practice test or an exercise, the app, or the free analysis page on this website, sends your answers to our grading service, which runs on Google Cloud. The service works out your results, sends them back, and keeps nothing. The record of your results is the one in your account (section 3). Before an official practice test is graded, the app asks our purchase service whether that test is unlocked, sending a sign-in token and the test’s name, never your answers.
Score reports. If you import your College Board Score Details PDF, our service reads it to fill in your answers and scores, then discards it. Only what it filled in is saved, in your account.
Reading and grammar exercises. So that you get passages you haven’t seen, the app sends a sign-in token with these requests. It tells our service which account is asking, never your email or your name.
Server logs. Our servers record basic details of each request, such as internet (IP) addresses and times, to keep the service running and secure. We delete them after about 30 days.
What the app never collects: your phone number, your contacts, your photos, your location, or any advertising identifier.

6. Notifications

Every notification is scheduled on your phone; none is sent from our servers. They are a daily practice reminder, only if you turn it on (Settings > Notifications > Daily practice reminder), and reminders before each official SAT’s registration deadlines. You can turn any of them off in your iPhone’s Settings.

7. Bootcamps

When you register for a bootcamp, you pay on Stripe’s checkout page, and we receive the name and email of the person paying, the student’s name, and your answers to the registration questions. We use them to run the bootcamp: the Google Meet invitations, the student’s Premium plan and bootcamp group in the app, and our records of who is enrolled. Payment records are kept as long as tax law requires.

After you pay, our intake form asks for the parent’s or guardian’s name, email, and mobile number (used only for a same-day change); the student’s name, email, grade, and school; the student’s SAT registration, scores so far, and target score; any testing accommodations; and anything else you’d like us to know. We use it to run the bootcamp and to set the student’s targets. Google Forms and Google Sheets keep it for us, and we delete it a year after the group’s last session.

After the SAT, an optional survey asks for the student’s name and group, the scores if you choose to share them, and what you thought of the bootcamp. We use it to improve the bootcamps and to measure how students do. Google Forms and Google Sheets keep it for us, and we delete it five years after the group’s last session.

8. Testing the app before release

When you sign up to test the app, our sign-up form asks for the parent’s or guardian’s name and email; the student’s first name, grade, next SAT, and most recent score; the email for the TestFlight invitation; and your answers to its other questions. Google Forms and Google Sheets keep them for us. We use them to send the invitation, to give the student the free Premium plan, and to write to you about the test.

While the student tests, Apple’s TestFlight shows us the invitation email, which test versions were installed, the iPhone’s model and iOS version, and any feedback, screenshots, and crash reports sent through it.

Within 90 days after the test ends, we delete the sign-up answers. If we use your quote, we keep your name, your email, and your answer about quotes for as long as the quote is in use.

9. This website

This website uses no cookies and no analytics. It remembers your light or dark choice in your own browser. Cloudflare, which delivers the site, keeps standard request logs.

Its free analysis page is the app’s grading screens running in your browser. It uses the same account as the app (section 3) and grades the same way (section 5), and it keeps your sign-in, your settings, and any answers you haven’t finished in your browser’s own storage, as the app keeps them on your phone (section 4).

10. Who else handles your information

Google (Firebase Authentication, Cloud Firestore, and Cloud Run) stores your account and runs our grading service. Google Workspace carries our email, and Google Forms and Google Sheets keep beta sign-ups, bootcamp intake forms and surveys, and quote permissions.
Apple processes every purchase in the app and runs TestFlight, under Apple’s own privacy policy.
Cloudflare delivers this website.
Stripe processes bootcamp payments.

Each handles your information only to provide its service to us, under terms that protect it at least as well as this policy does. We don’t sell your information, and we don’t share it for advertising.

11. Children

The deltaPlus SAT app is for students 13 and older. It asks for your birth year when you sign up, as this website’s free analysis page does, and neither creates an account for anyone under 13. Where state law requires it, the app asks Apple to confirm your age range, and Apple may ask a parent to approve; we receive only the age range, never a birthday. If you’re a parent and believe a child under 13 has an account, write to info@deltapluslearning.com and we’ll delete it and tell you when we have.

12. How long we keep things, and how to delete them

Your account and everything in it stays until you delete it.
Delete my account (Settings > Account > Delete my account) deletes your account, your progress, and your results. Three things stay, none carrying your email or your name once the account is gone: the list of reading passages and grammar questions you finished, the record of what you bought through Apple and which tests you unlocked, and the one-way code that keeps the free analysis to one per person (section 3).
Erase my saved results (Settings > Account > Erase my saved results) erases your results and keeps your account.
Server logs are deleted after about 30 days.
Bootcamp payment records are kept as long as tax law requires.
Bootcamp intake forms are deleted a year after the group’s last session.
Bootcamp surveys are deleted five years after the group’s last session.
Beta sign-ups are deleted as in section 8.
Quote permissions are kept as in section 3.

Deleting your account doesn’t cancel a plan you bought through Apple. Cancel it in your iPhone’s Settings, under your name, in Subscriptions, or Apple will keep billing you.

13. Your choices and your rights

A copy of your information. On the Premium plan, “Share my record” exports your results. Anyone can also email us for a copy of everything their account holds, and we’ll send it within 30 days, free.
Corrections. You can change your username and picture in the app; for anything else, write to us.
Deletion, as in section 12, or by writing to us.

Some states, such as California, give their residents rights to know, correct, and delete their information and to opt out of its sale or sharing. We don’t sell or share it, and anyone, wherever they live, can use the rights in this section by writing to info@deltapluslearning.com. We won’t charge you or treat you differently for asking.

14. Security

Information travels between the app and our services encrypted. Your password is stored by Google in a form no one, including us, can read. Access to our systems is limited to deltaPlus. No system is perfectly secure; if a breach affects your information, we’ll tell you as the law requires.

15. Links to other places

The app and this site link to College Board, Apple, Desmos, and others. Their own privacy policies apply there.

16. Changes to this policy

When the way we handle information changes, we update this page and its date. If the change is significant, we’ll also say so in the app before it takes effect.

17. Contact

deltaPlus Learning LLC
info@deltapluslearning.com
82 Wendell Ave, Suite 100, Pittsfield, MA 01201