Tilly is Open SourceCheck out the Repo

Never forget to follow up again

Your friends tell you important things. Tilly helps you remember and follow up when it matters.

Phone showing the Tilly People list

Here's the problem.

Your friend mentions their job interview. You care deeply. But weeks pass, and you realize you never asked how it went.

With Tilly, you log it once and get reminded to check in.

β€œI needed this. So I built it.”

Carl Assmann
The guy who wrote Tilly

Situations where Tilly helps

Real problems Tilly solves

Forget to reach out
Life gets busy and important people slip your mind
Can't scroll up real conversations
Real conversations are outside your whatsapp chat history
Notes and todo apps feel like work
Friendship shouldn't feel like a chore
Social media is noisy and distracting
Friends deserve their own space, free of work and distractions
How it works

Simple. Practical. Actually works.

  • Log what friends tell youStore notes for each person. See what matters most, not just their phone number.
  • Get reminded to follow upSet reminders so you never miss important moments.
  • Build stronger friendshipsShow up when it matters. Be the friend who remembers.
Phone showing Tilly person notes

Simple by design

Everything you need to be a better friend. Nothing you don't.

People & Notes
Store what matters about each person - birthdays, interests, life updates, and meaningful moments
Reminders
Gentle nudges to reach out at the right time, so you never miss important moments
Push Notifications
Never miss a birthday or important reminder with timely notifications on all your devices
Tilly Agent (Plus Tier)
Agentic AI assistant that autonomously organizes your thoughts and takes action to help you connect
Complete Data Control
Client-side encrypted sync with securely managed keys for notifications and Tilly Assistant. Export your data anytime. No vendor lock-in ever.
Works Everywhere
Instant sync across all your devices. Full functionality works offline when needed.

What Users Say

People love Tilly for various reasons

β€œToday I learned my design peer's favorite color. Thought about how to remember it ...Tilly! That's when it clicked - the app really comes in handy for collecting small but important details”

β€œI didn't know I was missing something like this. Now I know I could have used exactly this for a very long time.”

β€œDoes exactly what it should and is fast. The chat works surprisingly well.”

β€œThis is a cheat code for being a better friend!”

Tilly Agent: Your Relationship Assistant

Tilly Agent reads and writes your journal.

  • Just talk:'Sarah has a new project, Sophie has a new client, she seemed more relaxed.'
  • Tilly organizes:Finds Sarah and Sophie, adds notes, suggests reminders.
  • Before meeting:'Catch me up on Sarah' - Then you know what to ask.
  • When reaching out:'Help me message Sophie' - Get suggestions.

The convenience is real. It's so easy that you actually use it.

Phone showing the Tilly Agent chat

Choose Your Experience

Free or Plus - simple pricing for everyone.

Free

Free

Free requires a sign in for sync and push notifications

  • Unlimited people, notes and reminders
  • Push notifications
  • Sync to the cloud
  • Sync between devices
  • Import and export data

Plus

$6/month

AI agent for ultimate convenience

  • Everything in Free
  • Tilly Agent
  • Natural language input
  • Message suggestions
  • Automated note organization
  • Smart follow-up reminders
  • Support sustainable development

Frequently Asked Questions

Ready to remember what matters?