“I didn't realize how much energy I was wasting just trying to remember where I left things. Jack fixed that more than the productivity part honestly.”
See it in action
Watch Jack work.
From planning your week to remembering every detail.
One assistant for your whole week.
Tasks, memory, scheduling, and daily briefs — connected in one place.
01 — Tasks
All your projects. One clear view.
Jack organizes your tasks by project, priority, and deadline. No setup needed. You talk, it builds and adapts.
My Projects
Stealth App
Fix payment flow bugHighToday
Ship onboarding screenMedTomorrow
Personal
Write client proposalLowFriday
Morning runLowToday
02 — Memory
Jack remembers what you forgot.
Log your work as you go. Jack reads every entry and surfaces the right context exactly when you need it — days or weeks later.
03 — Week planning
Life happens. Jack adapts.
Tell Jack what changed. It rebuilds your week instantly — around your availability, your priorities, and what actually matters.
Before
Mon
Tue
Wed
Thu
Fri
I moved the SEO audit to Tuesday and cleared Wednesday for your client call. You're back on track.
After
Mon
Tue
Wed
Thu
Fri
J
Jack
Daily BriefGood morning.
Here's what matters today:
→ Payment flow bug — blocking everything else.
→ Client proposal due tomorrow — not started.
→ Morning run — you've kept the streak for 8 days.
You have 2 hours before your first meeting. Start with the payment bug?
04 — Daily Brief
Every morning, Jack comes to you.
You don't open Jack wondering what to do. Jack opens the day for you — with clear priorities and one question that gets you moving.
How it works
Simple to start. Powerful over time.
1
Day 1
Tell Jack what you're working on.
Add your projects and tasks. Jack learns your priorities, deadlines, and working style from day one.
2
Day 7
Jack starts noticing patterns.
It surfaces what you missed, flags what's slipping, and starts suggesting how to reorganize your week.
3
Day 30
Jack runs your week.
It knows when you work best, what you tend to procrastinate on, and how to keep you moving toward your goals.
Everything you need. Ready in 2 minutes.
Jack is useful from the moment you sign up.
As Jack learns your patterns, it becomes more proactive. But it's genuinely useful from minute one.
First month of Builder, on us.
Claim early access →Built with early users. Trusted by builders.
Here's what people said after their first few weeks with Jack.
“I use Jack mostly because my brain is chaos. Having something that remembers the context of what I'm doing is strangely calming.”
“I'm constantly switching between client work and internal projects. Jack is the first tool that doesn't make that feel exhausting.”
“What surprised me is that Jack notices patterns before I do. It called out that I kept delaying the same task every week. It feels less like a task manager and more like something keeping track of the bigger picture while I focus on work.”
“Most productivity apps just store information. Jack actually reconnects it. I stopped rewriting context to AI tools over and over, and for the first time I don't feel like I need to maintain some perfect productivity system just to stay on top of things.”
“After a couple weeks it starts feeling like Jack understands the rhythm of your work. That's the part that hooked me.”
From the founder
I built Jack because I was the problem.
I was 22, juggling an engineering degree at ISAE-SUPAERO, a 6-month internship, and a startup I was building on the side. On paper, manageable. In reality, I had a specific problem most productivity tools don't solve: knowing when to switch.
Not how to manage a to-do list — but knowing when a project had gone quiet long enough, when to pull back on one thing and push on another, how to keep everything moving without losing momentum on any of it.
I use ChatGPT and Claude every day — they're exceptional for thinking through problems. But keeping full context across multiple projects, across multiple conversations, across weeks of work — that's painful. It's not what those tools are built for. You end up manually juggling context across tabs, threads, and Notion pages just to stay coherent. The AI is smart. The system around it isn't.
I also kept detailed logs. But important work that wasn't urgent enough to act on today kept getting deferred — buried under what was louder, with no system to surface it when it actually mattered.
What I wanted didn't exist. Not a smarter chat interface — I wanted something visual. Something where you could open it and immediately see where every project stood, what was slipping, what needed you today. A dashboard that thinks, not just a thread that grows. Because the problem with text-only AI isn't intelligence — it's legibility. When everything lives in a conversation, nothing is easy to act on.
So I built Jack. Not to replace the AI tools I use every day — but to give them the structure they were missing. To manage context, not just tasks. To show you, clearly, what to do next.
I use it every day. I hope it does the same for you.
— Milhane, founder
Early Access
Get your first month of Builder free.
Jack is live and ready. Claim early access and get full Builder features for 30 days — no credit card required. We'll send your invite link within 24 hours.
Questions, answered.
Is Jack useful from day one?
Yes. You can create projects, add tasks, and organize your work right away. AI features use your monthly credits — the more you plan and chat with Jack, the more context it builds.
Is there a free trial?
Starter is free forever — no credit card required. Builder and Pro include your first month free. Start on Starter and upgrade when Jack becomes indispensable.
Will Jack keep its memory when I switch plans?
Your tasks and project data are always kept. Memory depth follows your plan (7-day on Starter, 30-day on Builder, full history on Pro). Upgrading restores access to older context.
What happens when I run out of credits?
Jack stays fully usable for tasks and projects. AI-powered features may use lighter models or pause until your credits reset. You can upgrade anytime, or wait until next month — your tasks and data stay safe.
How is my usage calculated?
Usage is measured in AI credits. Each Jack response, week analysis, or daily brief consumes credits based on complexity. Managing tasks and projects does not use credits.