FAQ
Everything about StudyH.
Active recall, spaced repetition, the Feynman method, pricing and more. Short, direct answers.
What is StudyH?
StudyH is a study platform that helps you truly learn instead of just rereading your material. It combines active recall, spaced repetition using the SM-2 curve, an AI-guided Feynman technique, an ENEM-style question generator, flashcards, mind maps, and review scheduling. The idea is simple: you follow a cycle of learn, review, and prove what you know, so the content actually sticks in your long-term memory. StudyH was built with Brazilian exam students in mind, with native Brazilian Portuguese as its main focus, while the English version is currently in beta.
How does active recall work?
Active recall means closing your material and trying to remember the content from memory, instead of just rereading or highlighting. That effort of pulling information out of your head, even when you get it wrong, strengthens learning far more than passive review. In StudyH you practice this constantly: you answer questions, explain concepts, and test yourself before checking the answer. It is the same mental muscle you use on the actual exam, so training it from the start leaves you genuinely prepared rather than just feeling like you know the material.
What is spaced repetition and the SM-2 curve?
Spaced repetition means reviewing content at increasing intervals instead of all at once. Right after learning something, you forget it quickly; reviewing at the right moment, just before you forget, locks the information in for longer. StudyH uses the SM-2 curve, a classic spaced repetition algorithm that adjusts the next interval based on how well you remembered each item. Things you recall easily come back after longer gaps, while the ones you miss return sooner. This way you spend your time on what actually needs reinforcing rather than reviewing everything.
What is the Feynman technique and how does StudyH use it?
The Feynman technique means explaining a topic in simple words, as if teaching it to a beginner. If you get stuck or fall back on vague terms, you have found a gap in your understanding. In StudyH, the 'Learn for Real' feature uses AI to guide that explanation: you teach the concept, the AI points out where it was unclear or incomplete, and helps you fix it. This turns rote memorization into real comprehension. The AI-guided Feynman technique is part of the paid plan; on the free plan, access is limited.
Does StudyH work for exams and competitive tests?
Yes. StudyH was designed for Brazilian exams, so it includes an ENEM-style question generator and native Portuguese context, but the method works for any large body of content that requires long-term retention. That covers university entrance exams, the ENEM, and public-service competitive exams. You use active recall and spaced repetition to lock in the material, practice with questions, and review at the right moment. It works both for people starting from scratch and for those doing final-stretch revision, because the learn, review, and prove cycle is content-agnostic.
How is artificial intelligence used in StudyH?
AI is what makes the studying more active and personalized. It runs the Feynman technique: you explain a concept and the AI points out gaps, mistakes, and confusing parts, helping you correct them. The AI also generates ENEM-style questions and flashcards from your content, and supports building mind maps. Instead of just handing you ready-made answers, it pushes you to think and recall the information yourself. The AI features require an internet connection, since the processing happens online and is not available in an offline mode.
Is StudyH better than Anki?
It depends on what you want. Anki is a very powerful, free, and generic spaced repetition system (SRS), but it requires you to build everything manually and has no exam context. StudyH adds the AI-guided Feynman technique, an ENEM-context question generator, and a native Brazilian Portuguese experience on top of spaced repetition. If you just want configurable flashcards and already know Anki well, it does the job. If you want a more guided flow, with AI correcting your understanding and questions in the real exam style, StudyH tends to save you time.
StudyH vs Quizlet: what is the difference?
Quizlet focuses on flashcards and memorization games, which are great for reviewing terms and definitions. StudyH goes beyond memorization: it forces active recall and uses AI to correct your understanding through the Feynman technique, not just to flip a card. On top of that, StudyH has spaced repetition with the SM-2 curve, an ENEM-style question generator, and mind maps, all in native Portuguese. If you only want quick flashcards, Quizlet works; if you want to learn for real and be corrected, StudyH is built for exactly that.
StudyH vs RemNote: which should I choose?
RemNote is strong as a note-taking and personal knowledge management (PKM) tool, blending notes and flashcards in one place. It is excellent for building a connected knowledge base. StudyH has a different focus: it is an active-study platform for exams, with an AI-guided Feynman technique, ENEM-style questions, SM-2 spaced repetition, and native Portuguese. If your goal is organizing lots of interlinked notes, RemNote shines. If your goal is passing entrance or competitive exams by training recall and being corrected by AI, StudyH is the more direct fit for that workflow.
How much does StudyH cost and what are the plans?
StudyH has a free plan and paid plans with no lock-in contract. In US dollars, the plans are: Free at $0, Monthly at US$6.99, and Annual at US$59.99. The free plan includes ads and a daily generation limit, while the paid plans unlock features like the full Feynman 'Learn for Real' technique and the question generator without those restrictions. You can pick the billing cycle you prefer and cancel whenever you want, with no penalty or commitment. The annual plan usually works out cheaper per month than paying monthly.
Does StudyH have a free plan? What does it include?
Yes, StudyH has a free plan at $0. It lets you use the platform with ads and a daily limit: you can do 3 simple generations OR 1 'Learn for Real' session per day. That is enough to get to know the learn, review, and prove method before deciding to subscribe. Features like the full Feynman technique and the ENEM-style question generator are part of the paid plans, so the free version is more limited. You do not need a credit card to start using the free version.
Do I need a credit card to use the free plan?
No. StudyH's free plan does not require a credit card or any payment details. You create an account and can start using the platform within the limits of the free plan, which includes ads and a daily generation cap. You only need to enter payment information if you decide to subscribe to a paid plan to unlock features like the full Feynman technique and the question generator. This way you can try the learn, review, and prove method with no financial commitment at all up front.
Can I cancel anytime?
Yes. StudyH's paid plans have no lock-in or minimum commitment, so you can cancel at any time. There is no cancellation fee. If you subscribed to a monthly or annual plan and decide to stop, you just turn off the renewal. The idea is that you stay with StudyH because the method is helping you, not because you are stuck in a contract. If you have any questions about canceling, you can reach the team by email at contact@studyh.tech or on Instagram at @studyh.tech.
How does StudyH generate questions and flashcards?
StudyH uses AI to turn your content into ENEM-style questions and active-recall flashcards. From the material you want to study, the AI creates questions that force you to retrieve information from memory rather than just recognize it. The flashcards then enter your spaced repetition routine with the SM-2 curve, coming back at the right moment. The ENEM-style question generator is part of the paid plan; on the free plan the number of generations per day is limited and there are ads. The AI features require an internet connection to work.
Does StudyH create mind maps?
Yes. Mind maps are part of StudyH's features and help you visually organize the connections between the concepts in a topic. They are useful for getting an overview of the material and seeing how ideas link together, which complements active study with questions and flashcards. Along with active recall, spaced repetition, and the Feynman technique, mind maps are part of the learn, review, and prove cycle. This way you do not just memorize isolated pieces, but understand the structure of the content as a whole, which makes recall easier later.
How does review scheduling work?
StudyH's review scheduling organizes what you need to review and when, based on spaced repetition and the SM-2 curve. Instead of guessing the best time to revisit each piece of content, the platform calculates the ideal interval: items you have mastered come back after longer gaps, and the ones you miss return sooner. This fights forgetting without wasting time on what is already locked in. You follow the learn, review, and prove cycle, and the scheduling makes sure nothing important slips into forgetting before your exam arrives.
Can I use StudyH on my phone?
Yes. StudyH is a web app you open in your phone, tablet, or computer browser, with no app store needed. There is currently no native iOS or Android app and no offline mode: the AI features need an internet connection to work. In practice, you just open the site in your browser and study from wherever you are, as long as you have internet access at the time.
How long until I see results with StudyH?
There is no exact timeframe, because it depends on your routine, your starting point, and your consistency. What we do know is that active recall and spaced repetition have a cumulative effect: the more you practice active retrieval and review at the right moment, the more the content consolidates in long-term memory. Many people feel a difference in their confidence answering questions within the first few weeks of steady use. The key is keeping the learn, review, and prove cycle regular, rather than studying a lot at once and then stopping.
How many hours a day should I study?
There is no magic number, and more hours does not always mean more learning. Consistency matters more than intensity: two hours a day that you actually complete beat six hours planned and abandoned in the first week. The best approach is to be honest about your real free time, after work, classes, and rest, and split it into short, focused blocks, reserving part for active practice and questions. StudyH helps you make better use of that time by concentrating your reviews on what you most need to reinforce, instead of everything at once.
Is StudyH useful for self-taught learners and people out of school?
Yes. StudyH's method works for anyone who needs to learn and retain content, not just students in school. Self-taught learners, people returning to study after years, professionals changing careers, and exam candidates all benefit from active recall, spaced repetition, and the AI-guided Feynman technique. Since you decide what you want to study, the platform adapts to your goal. The learn, review, and prove cycle is universal: it works just as well for a 17-year-old preparing for entrance exams as for an adult studying entirely on their own.
Is StudyH available in English?
Yes, StudyH has an English version, but it is currently in beta. The platform's main focus is the Brazilian audience, with native Brazilian Portuguese and exam context like the ENEM. The English version exists to reach students in other countries and is gradually maturing over time. If you study in Portuguese, you will get the most complete experience, tuned to your context. If you prefer English, you can use the beta version knowing that some features may keep evolving. Questions or feedback can go to contact@studyh.tech.
What does the learn, review, and prove cycle mean?
It is the core flow of StudyH. First you learn the content, through reading, lessons, or by explaining it with the AI-guided Feynman technique. Then you review at increasing intervals, using spaced repetition with the SM-2 curve to lock it in without forgetting. Finally, you prove what you know by solving ENEM-style questions and testing yourself with flashcards, which is where active recall really happens. This cycle repeats and steadily consolidates the material in long-term memory, far more efficiently than just rereading or highlighting your study material.
What is the difference between the free and paid plans?
The free plan ($0) lets you use the platform with ads and a daily limit: 3 simple generations OR 1 'Learn for Real' session per day. It is great for getting to know the method. The paid plans (Monthly US$6.99 and Annual US$59.99) unlock features like the full Feynman technique and the ENEM-style question generator, without the free plan's daily limit. No paid plan has a lock-in contract, so you can cancel whenever you want. In practice, the paid plan is for people who want to use StudyH intensively in their daily routine.
Does StudyH's method have a scientific basis?
StudyH is built on well-established learning techniques. Active recall and spaced repetition are among the most effective strategies for long-term retention, precisely because they require the effort of remembering rather than passive reading. The forgetting curve and algorithms like SM-2 guide when to review. The Feynman technique, explaining things in simple words, exposes gaps in your understanding. StudyH brings these ideas together into a practical learn, review, and prove flow, rather than relying on rereading and highlighting, which usually deliver less than they seem to during study.
How do I get in touch with StudyH?
You can reach the StudyH team by email at contact@studyh.tech or on Instagram at @studyh.tech. These channels are for questions about the plans, how the platform works, technical problems, subscription cancellation, or to send feedback and suggestions. Since StudyH is constantly evolving, especially the English version that is still in beta, user feedback helps improve the product. If you still have a question that was not answered here, it is worth writing through one of these channels and the team will help guide you through it.