Your second brain.
Secure, private, truly yours.
Notes, flashcards and tasks in one place. No ads, no trackers, no one altering your thoughts.
Start free, no credit card required.
Your knowledge. Your control.
Sound familiar?
Notes scattered across five different apps, and you can never find the right one.
Vocabulary studied, everything forgotten two weeks later.
Tasks juggled in your head until something important slips through.
That uneasy feeling that your notes are in someone else's hands.
Why build a note-taking tool?
It all started with a simple habit: the self-chat in WhatsApp, Telegram or Signal. A quick thought, a link, an idea — straight into the personal chat. Convenient, fast, always at hand.
But then came the question: who actually owns these notes? The service provider can modify, delete or read them — and you might never notice. Your notes are an extension of your thinking. And no one should be altering your thoughts without your knowledge.
Brainsparkle was born from exactly this conviction: your knowledge belongs to you. Not to a corporation, not to a platform. To you.
Features
One app for everything you think, learn and plan.
Brainsparkle combines notes, flashcards and task planning in a secure, private environment. Hosted in Germany, available in 10 languages.
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📝
✓Notes & Wiki
Capture thoughts, ideas and knowledge with Markdown, tags and an interconnected wiki structure. Find everything again when you need it.
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✓Vocabulary Trainer
Learn languages with scientifically proven spaced repetition (SM-2). Create your own flashcards or let AI generate them from your notes.
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✅
✓Task Planner
Plan your week with the weekly view, prioritise with the Eisenhower Matrix and keep track of open, completed and overdue tasks.
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✓Tags & Structure
Organise your knowledge flexibly with tags instead of rigid folders. AI suggests matching tags — you stay in control.
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✓Everything at a glance
Your dashboard shows daily statistics, due flashcards, open tasks and recommendations — so you know where you stand.
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✓Your data, your rules
Hosted in Germany, GDPR compliant, with two-factor authentication and passkeys. Your notes belong to you. And only you.
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✓MCP Protocol Premium
Connect AI clients like Claude Code or Cursor directly with your knowledge. The Model Context Protocol makes your notes, tasks and flashcards accessible to AI assistants.
See it in action
Your knowledge deserves a beautiful home.
Take a look at the features that elevate your learning, planning and thinking to the next level.
Everything at a glance.
Your dashboard immediately shows what's on today's agenda: due flashcards, open tasks, statistics and personal recommendations. No searching around — you start your day productively right away.
- Vocabulary trainer statistics at a glance
- Open tasks sorted by priority
- Personal recommendations and rediscoveries
- Overall statistics for notes, tags and favorites
Your knowledge. Connected.
Notes are more than text on a screen. With tags, links and the wiki feature, you build a personal knowledge network — like a Wikipedia just for you.
Add images, audio and video. Use Markdown for formatting. And find everything again via full-text search.
- Markdown formatting and rich text
- Tags for flexible organization
- Wiki structure for a connected knowledge base
- Full-text search across all content
Forget about forgetting.
The vocabulary trainer uses the SM-2 algorithm — the same method medical students use for thousands of technical terms. The system remembers what you know well and what still needs practice.
With Premium, you can generate flashcards automatically from your notes. The AI identifies key concepts and creates matching question-answer pairs.
- SM-2 spaced repetition for optimal learning
- Vocabulary and freeform decks
- Pronunciation help and example sentences
- AI-generated cards from your notes (Premium)
Plan your week. Not your stress.
The task planner shows your week in seven clear columns. Assign tasks to days, set priorities with the Eisenhower Matrix and review what you've accomplished.
Tasks without a date land in the Unplanned section — so nothing gets lost, even if you don't have a date for it yet.
- Weekly view with drag & drop
- Eisenhower matrix for clear priorities
- Due dates and progress tracking
- Switchable list and weekly views
Tags instead of folders. Flexible, not rigid.
Forget rigid folder structures. With tags, you organize your knowledge the way you think — not the way your file system dictates. A note can have multiple tags and appear in different contexts.
- Unlimited tags for maximum flexibility
- AI suggestions for matching tags (Premium)
- Filter and search by tag combinations
Pricing
Simple pricing. No hidden costs.
Start free with all core features. Upgrade anytime for AI power and unlimited storage.
Free
- Unlimited notes & wiki
- Vocabulary trainer (manual)
- Task planner (basic)
- Tags & full-text search
- 100 MB storage
- 10 languages
- Two-factor authentication
Premium
- Everything in Free, plus:
- AI flashcards from notes
- AI tag suggestions
- Eisenhower Matrix & weekly view
- MCP protocol for AI clients
- Unlimited storage
- Priority support
FAQ