Your thinking,
always moving forward.
Wisen is the AI note-taking app that turns everything you write into an ongoing conversation. Echo resurfaces your best ideas as reflection-worthy questions. Meanwhile, Pulse delivers a daily intelligence brief built entirely from your own notes. Nothing you write disappears — instead, it compounds over time into real knowledge.
Free · iPhone · iOS 16+ · No account required
Notes pile up. Thinking doesn't.
You're capturing more than ever. However, the insight you wrote on Tuesday is already fading by next week. Most note-taking apps simply store your ideas — and then do nothing with them. As a result, your best thinking stays buried.
The archive problem
Notes pile up faster than you can revisit them. Over time, context fades and connections between ideas go unnoticed. As a result, even your best thinking becomes buried clutter inside a passive knowledge management app that never acts on what you wrote.
No one to think with
Revisiting old notes on your own rarely sparks real reflection. Without a prompt or a conversation partner, old ideas simply sit there. In fact, most people open their notes only to add more — never to actually develop the thinking already inside.
Generic AI doesn't know you
General AI assistants can answer questions. However, they have no idea what you've been working on or which threads in your thinking remain open. Because of that, every conversation starts from zero — and nothing builds over time.
Wisen fixes this by turning your own notes into the foundation of a personal AI assistant. Through Echo conversations, daily Pulse briefs, and questions you hadn't thought to ask, your thinking finally compounds — instead of disappearing.
See it working on real notes.
Walk through how Echo finds a hidden thread across your notes. Then, see how Pulse turns that thread into your daily AI knowledge brief — built entirely from what you wrote.
Four notes from this week.
Scattered thoughts. Unfinished ideas. Things you haven't acted on yet.
Echo found a thread.
Three notes from different days, pulling toward the same problem.
An AI assistant that actually knows what you've written.
Your notes, your answers
WisenChat is a conversational AI grounded entirely in your own notes. Ask it what you wrote about a topic last month — and get a cited answer in seconds. Because it only works from what you actually wrote, every response reflects your real thinking.
Unlike general AI tools, WisenChat never invents answers. Instead, it surfaces exactly what you wrote — with links back to the source notes. As a result, you always know where the insight came from.
What you can ask it
- Ask "what did I write about X?" and get a cited answer from your actual notes — not a guess
- Request summaries, drafts, or analyses built entirely from your captured material
- Surface what's still unresolved across any topic — from a single question to months of writing
Built with privacy in mind.
Your notes are encrypted before leaving your phone. AI features are powered by OpenAI — so only the content you actively engage with is ever processed. Furthermore, none of your data is used to train their models.
AES-256-GCM Encryption
All note content is encrypted with AES-256-GCM before leaving your phone. This means your notes stay protected in storage and in sync. Even if a data breach occurred, an attacker would only access encrypted blobs — without any key to read them.
Powered by OpenAI
AI features use the OpenAI API. When you use Echo, Pulse, or WisenChat, only the relevant content from your session is sent to OpenAI to generate your response. Additionally, none of your notes are ever used to train their models.
Your Key, Your Data
Your encryption key is derived from your password and stored in iCloud Keychain. It never leaves your device. Therefore, no server ever sees it — and only you can decrypt your notes.
Encrypted Sync Only
Cloud sync uses hash-based change detection so only changed data is transmitted. Moreover, everything travels as an encrypted blob. Your raw notes never reach the server in readable form — ever.
Everything your smart notes app was missing.
Echo sessions, smart reminders, scan tools, WisenChat, Knowledge Map, and spaced repetition learning — all in one privacy-first app for iPhone.
Echo Sessions
Echo reads your notes and finds the moments worth returning to. Sometimes it connects two notes you forgot were related — and then builds a question around what they share. As a result, each session feels less like a review and more like continuing a conversation you forgot you'd started. It's the AI reflection tool you didn't know you needed.
Pulse Daily Brief
Once a day, Pulse reads your recent writing and produces a clear brief. Specifically, it covers what you've been thinking about, what's still unresolved, and which questions are worth sitting with. It also includes open question detection and draft generation — built from your own notes.
WisenChat
Ask anything about your notes. WisenChat is grounded entirely in what you wrote, with citations back to the source. Because it never invents answers, every response reflects your actual thinking — not a guess.
Knowledge Map
A visual graph that shows how your notes connect semantically. Tap any link to open a cross-note Echo session. Furthermore, the map grows richer the more you write — making it a true personal knowledge management tool over time.
Smart Reminders
Not every note needs a full Echo session. Instead, smart reminders quietly resurface individual ideas at the right moment. Open the card, mark it done, or go deeper. Nothing fades or disappears.
Scan, Upload & Import
Import PDFs, scan handwritten notes, or drop in images and voice recordings. Wisen converts everything into searchable, cross-linked content. Moreover, it supports 9 languages with automatic detection — so nothing gets left out.
Spaced Repetition Learning
Wisen tracks mastery at the block level using a modified SM-2 algorithm. Ideas get revisited until they genuinely stick. As a result, mastered content is automatically excluded — so you're never over-drilling what you already know.
How Wisen works — in three steps.
From raw notes to active, living knowledge management in just a few minutes.
Capture your notes
Start by writing, drawing, scanning pages, or uploading PDFs and slides. Additionally, Wisen accepts voice recordings and images. There's no setup required and no right format. Everything becomes part of the same searchable system from the moment it goes in — so you can focus on thinking, not organising.
Echo & Pulse do the work
Echo reads your notes and finds the moments worth returning to. Sometimes it connects two separate notes — then builds a question around what they share. Meanwhile, Pulse reads your recent writing every day and delivers a brief with open questions. Both features work privately, built entirely from your own words.
Knowledge compounds over time
Important ideas get revisited until they genuinely stick. Nothing disappears and nothing gets lost. In fact, the longer you use Wisen, the more Echo and Pulse have to work with. As a result, every session becomes more useful — because your personal knowledge base keeps growing.
Now on the AppStore
Wisen is live and already in the hands of real users. As an early adopter, you get full app access and a direct line to the team — your feedback still shapes every release. There has never been a better time to start using an AI note-taking app that's growing with its users. The app improves with every person who uses it — so help build something worth remembering.
Free for iPhone · Requires iOS 16+