The Obsidian Spaced Repetition plugin has 500,000+ downloads, which means half a million people thought "I'll just turn my notes into flashcards right here."
I get it. If you already live in Obsidian, adding #flashcard to a line feels frictionless. No export, no sync, no second app. But after three weeks of daily reviews in both systems, I learned that convenience and effectiveness aren't the same thing.
TL;DR: Use Obsidian SR if you're already deep in the Obsidian ecosystem and want zero-friction card creation from notes. Use SmartRecall if you want AI-generated cards, mobile-first reviews, or scheduling that actually adapts to how you learn.
How I evaluated them
I ran both tools in parallel for 21 days with the same material: 200 cards covering TypeScript concepts, startup metrics, and Spanish vocabulary. I tracked:
- Card creation speed — how fast can you go from idea to reviewable card
- Review experience — UI, mobile support, keyboard shortcuts
- Scheduling intelligence — does it learn your retention patterns or just follow a formula
- Integration friction — how much does it disrupt your existing workflow
- Cost vs. value — what you actually pay for what you get
I'm not pretending to be neutral. I built SmartRecall because I was frustrated with existing tools. But I'll tell you exactly where Obsidian SR beats us.
1. Card creation: Markdown vs. AI assistance
Obsidian SR wins on raw speed if you're already writing notes.
You type your note, add #flashcard or use :: separators for cloze deletions, and you're done. No context switching. I created 50 cards in 15 minutes from my existing TypeScript notes just by tagging blocks.
The syntax is simple:
What is a union type in TypeScript? #flashcard
A type that can be one of several types, using the | operator.
TypeScript uses {{structural typing}} to determine type compatibility. #flashcardThat second line becomes a cloze deletion automatically. Fast, minimal, works.
SmartRecall wins when you don't want to write cards manually.
Our AI card generator reads your notes, articles, or docs and creates cards for you. I pasted a 2,000-word article about React Server Components and got 18 cards in 30 seconds. Not all were perfect — I edited 4 of them — but it's faster than writing 18 cards from scratch.
The honest critique: SmartRecall's card editor is slower than typing in plain text. You're clicking fields, not just flowing in Markdown. If you're a keyboard-first person who already writes in Obsidian, our UI will feel heavier.
2. Review experience: Desktop-first vs. mobile-native
Obsidian SR is a desktop plugin that happens to work on mobile.
The review interface is a modal that pops up in Obsidian. You see your card, click "Show Answer," then choose Hard/Good/Easy. It works. It's not beautiful, but it's functional.
On mobile (iOS/Android), you can review cards in the Obsidian mobile app, but the UI wasn't designed for thumb-driven reviews. Buttons are small. The modal takes up the full screen. I found myself avoiding mobile reviews because it felt clunky.
Keyboard shortcuts on desktop are solid: Space to reveal, 1/2/3/4 for difficulty ratings. If you're reviewing at your desk, it's efficient.
SmartRecall is mobile-first with swipe gestures.
We built the review UI for phones because that's where most people actually do reviews — on the train, in line, before bed. Swipe right for "got it," swipe left for "review again," tap to flip. No hunting for buttons.
Desktop works too, with the same keyboard shortcuts Obsidian has, but our design priority was "can you review 50 cards one-handed on a subway?"
The trade-off: SmartRecall doesn't live inside your note-taking app. It's a separate tool. If you're someone who wants everything in one place, that's friction.
3. Scheduling: SM-2 vs. FSRS
Obsidian SR uses SM-2, the 1987 algorithm that Anki popularized.
It's simple: answer "Easy" and the card comes back in 4 days. Answer "Hard" and it comes back in 1 day. The intervals grow exponentially based on your ratings.
SM-2 works. Millions of people have used it successfully. But it doesn't adapt to you. If you consistently forget cards at the 7-day mark, SM-2 doesn't notice. It just keeps following the same formula.
I tested this by deliberately rating cards inconsistently. Obsidian SR kept scheduling them at the same intervals. No adjustment.
SmartRecall uses FSRS (Free Spaced Repetition Scheduler), the algorithm Anki switched to in 2024.
FSRS learns your retention patterns. If you keep forgetting cards after 5 days, it shortens the interval. If you're acing cards at 10 days, it stretches them out. It's adaptive.
In my three-week test, FSRS reduced my review load by about 15% compared to SM-2 because it stopped showing me cards I clearly knew well. That's 8 fewer cards per day on a 50-card deck.
The catch: FSRS needs data to learn. For the first 50-100 reviews, it's basically SM-2. The adaptation kicks in after you've built a history.
For a deeper look at the algorithm differences, read how SM-2 compares to FSRS.
4. Integration: All-in-one vs. best-of-breed
Obsidian SR wins if you want zero integration work.
Your notes are your cards. Your vault is your database. No export, no sync, no API keys. If you're already using Obsidian for everything — notes, tasks, journaling — adding flashcards is one plugin install.
I loved this when reviewing TypeScript concepts because I could click a card, jump to the source note, read the full context, then come back to the review. That tight loop is hard to replicate in a separate app.
SmartRecall wins if you want cards from multiple sources.
We pull from PDFs, web articles, YouTube transcripts, and plain text. I made cards from a podcast transcript, a research paper, and my own notes in the same deck. Obsidian SR only works with content that's already in your vault.
The honest critique: SmartRecall doesn't integrate with Obsidian at all. If your knowledge base lives there, you're copy-pasting or exporting. We're working on a plugin, but it's not ready yet. That's a real gap.
5. Cost: Free vs. $8/month
Obsidian SR is free. It's a community plugin. No limits, no paywall, no upsells.
SmartRecall is $8/month (or $80/year). You're paying for:
- AI card generation (unlimited)
- FSRS scheduling
- Mobile apps (iOS/Android)
- Cloud sync across devices
- Priority support
If you're a student or hobbyist who's already in Obsidian, the free plugin is probably enough. If you're a professional who values time and wants better scheduling, $8/month is reasonable.
The honest critique: SmartRecall doesn't have a free tier. You get a 14-day trial, but after that, you pay or you're done. Obsidian SR will always be free. That's a meaningful difference for people on tight budgets.
When to choose Obsidian Spaced Repetition
Pick Obsidian SR if:
- You already use Obsidian daily and want flashcards without leaving the app
- You're comfortable writing cards manually in Markdown
- You don't need mobile-optimized reviews (or you're okay with the current mobile experience)
- You want a free solution with no ongoing costs
- You prefer open-source tools you can customize
It's a solid plugin. I still use it for quick one-off cards when I'm already writing in Obsidian.
When to choose SmartRecall
Pick SmartRecall if:
- You want AI to generate cards from articles, PDFs, or videos
- You do most of your reviews on your phone
- You want scheduling that adapts to your actual retention patterns
- You're pulling content from multiple sources, not just one note-taking app
- You're willing to pay $8/month for a better review experience
We're not trying to replace your note-taking app. We're trying to be the best tool for turning knowledge into long-term memory.
The real question
The real question isn't "which tool is better?" It's "do you want your note-taking app to also be your flashcard system?"
If yes, Obsidian SR is excellent. It's free, it's integrated, and it works.
If no — if you want a dedicated tool built specifically for spaced repetition with AI assistance and mobile-first design — that's why SmartRecall exists.
I use both. Obsidian SR for quick cards from my daily notes. SmartRecall for everything else. You don't have to choose just one.
Try Obsidian SR first (it's free). If you hit friction points — slow card creation, clunky mobile reviews, or wanting smarter scheduling — that's when SmartRecall makes sense.
