FreeNo adsFor iPhone
Your classes, but fun.
Bite-size, interactive lessons for the classes you're actually taking, from Algebra 2 to AP® Bio to Spanish. Pick the unit you're on, tell Studodo when your next test is, and Doug the Dodo builds your plan to get there.
Free for iPhone. No account needed to start. Launch emails are for parents and teachers.
- 95courses
- 36AP® courses
- 7world languages
- $0free, no ads
Short lessons. Real progress. A little chaos from Doug.
Real screens from Studodo on iPhone.
A plan for your next testToday's card follows what's happening in class. 
Learn it firstLotl teaches AP Bio before you get quizzed. 
Watch it happenAnimated walk-throughs, one step at a time. 
Flawless.XP, quests and a streak that celebrates showing up. 
AP® free responseWrite it, then score it with a rubric and a model answer. 
Paste your study guideEach line gets matched to the lessons that cover it. 
Make it youDesign a cartoon avatar and unlock new looks. 
Level upEvery level unlocks something new.
Swipe for more screens →
Built for the class you have tomorrow
Not a random trivia game. Studodo follows your real courses, unit by unit, and teaches before it tests.
From Algebra 2 to AP® Art History
Add the classes on your schedule and pick the unit you're on. Lessons line up with how high school courses are taught.
- Core classes from Pre-Algebra to Pre-Calculus, Biology to Physics, English 9–12 and history
- 36 AP® courses, from Calculus BC to Art History
- 15 world language courses in 7 languages, read aloud in most of them
- SAT®, PSAT/NMSQT®, ACT® and PreACT® prep with timed practice tests
Ready by Friday, not Thursday at midnight
Add a quiz or test date and each day's plan focuses on what's on it, with review mixed in and a readiness check that grows as you study.
- A countdown and a short plan for every day until the test
- Paste your teacher's study guide to find the matching lessons
- Practice finals and unit tests when you want the real thing
And a lot more in every lesson
Bite-size lessons
A few minutes each. Tap through pictures, sort, match, plot points and move sliders instead of just reading.
Worked examples
Step through a solution, then try each step yourself until you can do the whole thing alone.
Review that sticks
Questions you miss come back right before you'd forget them. "Fix my mistakes" turns them into a quick lesson.
AP® free response
Practice the written part of AP exams, then check your answer against a model answer and a scoring rubric.
Flashcards and decks
Make your own decks or paste a list from class. They come back on a smart schedule, private to you.
Boss rounds and cases
Beat each unit's boss for a crown, and crack story-driven case lessons clue by clue.
Streaks you'll keep
Set a daily goal, grow your streak, earn freezes for busy days and 200+ achievements.
Your class, too
Teachers can share a class code and assign units with due dates. Joining is always the student's choice.
Your study crew
Every subject has a guide who teaches it, celebrates with you and, in Doug's case, trips over the furniture.
DougYour study buddyDry humor, falls over a lot, knows his stuff.
PicoLanguagesCool, well-traveled, a little smug.
OlloHistorySlow, steady, and was probably there.
LotlScienceAn excitable scientist with goggles.
BandiMath & CSA clever puzzler who loves a shortcut.
VixieEnglishDramatic, theatrical, reads everything.
Free. No ads. Gems never sold.
Studodo is free to download and free to use. There are no ads, no in-app purchases and no paywalls on lessons. Gems and chests are earned by studying, never bought.
- Every lesson unlockedAll 95 courses, from day one.
- No ads, everNothing between you and the next question.
- Earn it, don't buy itGems, outfits and app icons come from studying.
Private by design, made for teens
For students, and for the parents and teachers who want to know exactly what's going on.
No account needed
Start studying right away. Without an account, your progress stays on your phone.
No chat
No chat or free-text messages. Other students only see a username, a cartoon avatar, achievements and XP; teachers of classes you join see your class progress.
No ads, no tracking
We don't show ads, don't track you across apps and websites, and never sell data.
Social is opt-in
Accounts are for ages 13 and up. Leagues, school boards and friends stay off until you turn them on.
Report and block
Usernames go through a strict filter. Report or block anyone. Child-safety reports are reviewed first.
Your data, your call
See what's saved, export your progress, or delete your account anytime, right in the app.
Details are in our Privacy Policy and Terms of Use.
Bring your class along
Create a class in a few minutes, share a code or a printable QR poster, and assign units with due dates that show up first in your students' plans. You see the name each student gives you (or their username) and their progress. There's no chat, and students choose to join.
How classes work
Questions, answered
Is Studodo really free?
Yes. Every course and lesson is free, with no ads and no in-app purchases. Gems are earned by studying and are never sold.
When can I get it?
Studodo is coming soon to the App Store for iPhone. This page will link to it as soon as it's live.
Which classes does it cover?
95 courses: core high school classes in math, science, English, history and social studies, electives like Psychology, Personal Finance and Python, 15 world language courses in 7 languages, 36 AP® courses, SAT®, PSAT/NMSQT®, ACT® and PreACT® prep, and story-driven Explore courses like The Universe and World Mythology.
Is there an Android or web version?
Not yet. Studodo is an iPhone app for now. Teachers can use the web dashboard on any computer, but students need an iPhone.
Do I need an account?
No. Lessons, practice and review all work without one, and your progress stays on your phone. A free account (ages 13+) syncs your progress across devices and lets you turn on leagues, your school's board, friends and teacher classes.
Is it safe for my teen?
Studodo has no chat or messaging, no ads and no tracking. Social features are off until a student turns them on, usernames are filtered, and anyone can be reported or blocked. Child-safety reports are reviewed first. See the Privacy Policy for the details.
Can I use it with my class?
Yes. Teachers can create a class, share a code or QR poster and assign units with due dates. Read how classes work.
Is it affiliated with the College Board or ACT?
No. Studodo's lessons and questions are original. AP®, SAT® and PSAT/NMSQT® are trademarks of the College Board, and ACT® and PreACT® are trademarks of ACT Education Corp. Neither is affiliated with, or endorses, Studodo.
I need help or found a mistake.
Visit Support or email support@studodo.com. In the app, tap the flag on any question to report it.
Next test coming? So is Studodo.
Free on iPhone, coming soon to the App Store. Doug is practicing his landing.