Anki has a devoted following among medical students and language learners, and it deserves it. It's free, open source, and its scheduler is among the best-studied tools available. It also has a well-known property: several evenings pass before you're productive in it. This article compares Anki and diStudero on what they share, the FSRS algorithm, and on where they genuinely diverge.

Summary

Both use FSRS. The difference isn't the algorithm, it's how much work separates you from your first card.
Anki is free and endlessly configurable, but you create the content yourself or download someone else's deck.
diStudero generates cards directly from your course material and adds quizzes, mind maps, and oral exam simulation.
Choose Anki if you enjoy tuning a system. Choose diStudero if you want to start reviewing tonight.

Key takeaways

FSRS schedules reviews based on when you're estimated to be about to forget, not on fixed intervals.
The real time cost in Anki is deck creation and maintenance, not reviewing.
Downloaded decks often don't match what your specific instructor tests.
diStudero accepts PDF, DOCX, PPTX, TXT, web URLs, and photos of notes via OCR.

What FSRS is, and why it matters to both

FSRS (Free Spaced Repetition Scheduler) is a review scheduler. Rather than showing a card after a fixed number of days, it estimates how well you remember it and schedules it for the moment when you can still retrieve it but it takes effort. That effort is precisely what strengthens the memory.

The practical effect is straightforward: you stop cycling through the whole deck. Material you know well returns rarely. Material you get wrong returns often. On large subjects this means dramatically less wasted review.

The important point is that neither tool has a "better" version of this. Anki and diStudero both build on FSRS. So choosing based on the algorithm doesn't make sense. Choose based on what happens before you see your first card.

The real difference: cost of starting

This is where the paths diverge.

With Anki you have three options. Write cards manually, which for hundreds of pages of material is several evenings of work. Download someone else's deck, risking that it covers different material or contains errors. Or learn the import add-ons, which means more time configuring instead of studying.

With diStudero you upload a document and cards are generated from it. The source is the exact material you'll be examined on. You don't search for whether someone covered your topic, and you don't verify whether a stranger's deck matches your syllabus.

The experience difference is fundamental. Anki is a tool you configure once and it serves you for years. diStudero is a tool where you upload today's lecture slides and study from them minutes later.

Comparison

Criterion	Anki	diStudero
Review algorithm	FSRS	FSRS
Price	Free (iOS app paid)	€10.99/month, €74.99/year
Card creation	Manual or import	AI generates from your file
Supported inputs	Text, add-ons	PDF, DOCX, PPTX, TXT, URL, photo (OCR)
Learning curve	Steep	Shallow
Customization	Effectively unlimited	Limited to provided options
Quizzes from the same source	No	Yes
Mind maps	No	Yes
Oral exam simulation	No	Yes
Offline mode	Yes, fully	Partial, printable cards
Ecosystem of add-ons	Large	None

When to stay with Anki

Being honest, Anki is the better choice for a specific kind of student:

You're studying long-term, over years. Anki is built for decade-long collections and isn't going anywhere.
You want zero cost. It's free on desktop and Android.
You need specific card types: cloze deletion, image occlusion, custom templates. Anki is unmatched here.
You enjoy tuning the system. For many users, configuring Anki is part of the appeal.
You study offline. Anki works fully without a connection.
You want full data ownership. Your collection is a local file you control.

When diStudero makes sense

You have bulky course material for which no deck exists.
The semester is already underway and you don't have evenings to build decks.
You need more than flashcards. From the same material you can generate a quiz, a mind map, an infographic, or an AI podcast to listen to on your commute.
You have an oral exam coming. The exam simulation asks open-ended questions, accepts spoken answers, and grades them. Flashcards don't prepare you for sustained explanation.
You study in a language other than English. diStudero generates content in 8 languages including Czech, Polish, German, Spanish, Italian, Slovak, and Ukrainian.

A practical closing note

Many students use both, and that's a reasonable position. Anki for long-term collections you build over years, typically vocabulary or anatomy. diStudero for semester crunch, when you need to process a specific document for a specific exam quickly.

If you're undecided, take the material you're currently studying and try uploading it. The free tier gives 10 AI flashcards per day and 5 MB of storage, which is enough to compare the generated output against what you'd have written by hand. The paid tier, with a 5-day trial, removes those limits if the quality holds up.

One caveat worth stating: generated cards need review. Deleting a quarter of them because they target trivia rather than concepts is normal and worth the ten minutes. This is true of any generation tool, and it's the step most people skip.