What is Raena AI?
Nine study formats generated from one upload
- Price
- $13.99/mo$83.99/yr
- Free
- Free tierAdvertised, but the store lists features as subscription-only
What you get
- Quizzes, flashcards, summaries and mindmaps from one upload
- A two-speaker podcast of your material
- An AI tutor you can ask about your own documents
- Study games, including its "brainrot" format
Raena AI turns one upload into a lot of output, and it is genuinely fast at it. Its App Store rating is 4.6, and for the job of producing study material in a hurry it does what it says.
Two things send people looking elsewhere. Its own site advertises a free plan with no credit card, while Apple's listing for the same app heads the feature list "Key Features (Subscription Required)" and puts the quizzes, summaries, flashcards, podcasts and the AI tutor underneath it. And the most common complaint by a distance is being charged on a cadence people did not expect.
What it does well
- Genuinely fast. One upload becomes more formats than anything else on this page
- The games and the mindmaps have no equivalent among the alternatives here
- Rated 4.6 on the App Store. For producing material in a hurry it does what it says
Where it falls short
- The site advertises a free plan with no card; the App Store listing puts the same features under "Subscription Required"
- The billing cadence is the most common complaint. Reviewers report weekly charges where they expected monthly
- No pricing page anywhere on the site. You find out what it costs at the paywall
- Its Google Play rating is 4.03, with a meaningful one-star tail
Turbo AI
Lecture recorder and note generator
- Price
- $19.99/mo$119.88/yr
- Free
- Free tierTight monthly caps
What you get
- Records a live lecture and turns it into notes
- Also takes PDFs, videos and documents
- Flashcards, practice questions and a podcast from any of them
Beats Raena at
- Live lecture capture, which Raena does not do at all
- Filters out the chatter around you, so you get the lecture and not the room
- A far larger and more consistent review base
Where it falls short
- The most expensive tool on this page at $19.99 a month
- It shares Raena’s worst habit: no pricing page. You find out at the paywall
- The free tier is capped tightly enough that it runs out in days
Gemini Notebook
Google's document assistant, formerly NotebookLM
- Price
- $4.99/movia Google AI Plus
- Free
- Free tier50 sources, 10 quizzes a day
What you get
- 50 sources per notebook, 100 notebooks, on the free tier
- Answers only from your documents, with a citation on every claim
- Quizzes, flashcards, mind maps, audio and video overviews
- 50 chats, 10 quizzes and 10 flashcard sets a day, free
Beats Raena at
- The free tier is not a demo, and no card is involved at any point
- Its audio overviews are the best version of the podcast feature in this category
- No subscription means no cadence to misread and no cancellation to get wrong
Where it falls short
- It explains, it does not train you
- Web only, so there is no app to open on the bus
- No tracking of what you got wrong, and no scheduled revision
Studley AI
Study sets with written-answer tests, plus a photo solver
- Price
- $14.99/mo$97.99/yr
- Free
- Free tierOne study set, ever
What you get
- Flashcards, multiple choice, fill-in-the-blanks and notes
- A written test that grades free-text answers for completeness
- A paper grader that takes an essay plus a rubric and returns a breakdown
- A photo solver for homework problems
Beats Raena at
- It publishes its prices on its own site, which given why you are here may be the point
- Written-answer practice, which nothing else on this page offers
- Questions carry status tags so you can see what is still unfamiliar
Where it falls short
- Its free tier is worse than Raena’s: one study set, ever
- A photo-to-answer Solve tab sits one tap from your study sets
- Notes come back incomplete often enough to be its main Trustpilot theme
RemNote
Notes, AI flashcards and spaced repetition in one app
- Price
- $8/mo$96/yr$18/mo for full AI
- Free
- Free tierUnlimited flashcards, 100 AI credits a month
What you get
- Notes, PDF annotation and flashcards in one place
- AI generates cards from your own notes, PDFs and lecture transcripts
- Spaced repetition brings each card back just before you would forget it
- Exam scheduler, image occlusion and an AI tutor chat
Beats Raena at
- A genuinely open free tier: unlimited notes and unlimited flashcards, no expiry
- Your notes become the flashcards, so you are not maintaining two systems
- Built for long courses. The following in medical school is not an accident
Where it falls short
- It is a system, not a quick fix. Expect to spend real time setting it up
- Full AI needs the $18/mo tier. Free gives you 100 AI credits a month, Pro 1,000
- Nothing here is generated in nine formats. It does one thing
- Like Anki it drills recall. It will not notice you have misunderstood something
Anki
Spaced repetition, where you write the cards
- Price
- $24.99 once on iOS, free everywhere else
- Free
- Completely freeDesktop, Android and web
What you get
- Free on desktop, Android and web, with free sync. $24.99 once on iOS
- The best spaced-repetition scheduler there is. Cards come back just before you would have forgotten them
- Open source, twenty years old, decks stored on your own machine
- Thousands of community add-ons and shared decks
Beats Raena at
- No subscription, no cadence to misread, no cancellation to get wrong
- For long-term retention per hour spent, nothing here beats it
- Writing the cards yourself is a large part of why Anki users remember things
Where it falls short
- You write every card, and writing good ones is a skill in itself
- The interface is famously utilitarian
- Three days from an exam with 200 unread pages, this is the wrong tool
- It handles recall only. It will never make you explain a mechanism
Akono
One study loop rather than a menu of output formats
- Price
- €11.99/mo€59.88/yr
- Free
- Free trial3 days, card required
What you get
- One loop rather than a menu of formats: it asks, you answer, it teaches
- Sessions built from your uploaded material, not generated entertainment
- Anything you misunderstand is recorded and comes back in later sessions
- Checkpoints per chapter and practice exams, timed to your exam date
Beats Raena at
- The only tool here where the next question depends on how you answered the last one
- It teaches you the missing piece mid-session instead of marking you wrong and moving on
- What you misunderstand stays open across sessions until you can explain it yourself
Where it falls short
- No free tier of any kind. Three days of full access, card required
- If the exam is tomorrow this will not save you. It plans backwards across weeks
- Weaker for pure calculation drilling, where a problem set or Anki serves you better
- One format, not nine. No games, no mindmaps, no photo solver
How Akono is different
Every other tool on this page hands you a finished set. The flashcards, the quiz, the mindmap: all of it is written before you answer the first question, and none of it changes after you do. Get question four wrong and question five turns up exactly as it was, because it was written when the tool knew nothing about you.
That works for memorising. It is a bad way to fix something you have misunderstood, because nothing in the loop ever notices that you have.
Anki and RemNote are the near-exceptions, and they deserve the credit. Their schedulers really do adapt, better than anything else here. But what they adapt is when a card comes back, not what the card asks. Miss the same card six times and you see it six times, word for word, with nothing in between to explain the bit you keep missing.
A generated set
Raena, Turbo, Gemini Notebook, Studley, RemNote, Anki
You answer
You get it wrong.
What happens
It is marked wrong. If you are lucky, the correct answer is shown next to yours.
Next question
The next one in the set. Chosen before you started, with no relationship to what just went wrong.
One loop instead of nine formats
Akono
You answer
You get it wrong.
What happens
There is no format to switch to. The answer is read and the gap identified.
In between
That gap is taught in the same session, not queued as another artefact.
Next question
Chosen from what you just got wrong, which is the only thing the loop reacts to.
Which one should you pick?
Mostly this comes down to how long you have left.
Days away
The exam is this week and you have not read the material yet.
Raena or Turbo AI
Generating a summary and a quiz fast is exactly what they are for. This is the one bucket where Akono is the wrong answer.
A few weeks
Enough time to fix what you do not understand, not enough to build a system.
Akono
Long enough for a tutor to find your gaps and close them. Too short for writing your own cards to pay off.
A term or more
You want to still know this at the end of the year, not just on the day.
Anki or RemNote
Spaced repetition needs months before it pays off. Given months, nothing here beats it.
Any timeline, no budget
You are not paying for a study tool, whatever the deadline.
Gemini Notebook
The largest genuinely free tier on this page, and it works on your own documents.
Every price and limit here was checked against each product's own site, store listing or in-app paywall on 24 July 2026. Raena's prices were read off its in-app paywall, since they appear nowhere on its site.