Free Beta
$0 to start
Start with your context and a useful first result.
Start freeLimited allowance · no card to start
A working partner for founders
Your next move.
Made tangible.
Turn a startup question into research, a working draft, or something you can test. Give Lipsius the context. Leave with a useful result and a clear next step.
Start with your startup contextFree beta · no card to start
WORK SESSIONExample
THE OUTCOME
A first customer conversation
worth having.
Explore the problem. Turn what we know into questions we can learn from.
- Review the startup context
- Identify the riskiest assumptions
- Draft the interview guide
Customer interview guideSeven questions. One next step.
Progress and files, in one place You stay in control
Results saved in your workspace Pause and change direction Connections with explicit permissions
FROM QUESTION TO NEXT STEP
Less to juggle.
More to work with.
Start with one concrete outcome. Lipsius keeps the context, does the work, and brings the result back to your workspace.
TRY A BRIEF LIKE THIS
“Help me understand how independent tutors manage cancellations. Find the questions worth asking before I build.”
Illustrative workflow
A better first conversation
- 01Research the problem and cite the sources
- 02Separate evidence from assumptions
- 03Draft a short customer interview
Customer interview guide
Research informs your next experiment. Real customer conversations validate it.
AUTONOMY, WITH A HANDLE
Hand off the task.
Keep the decisions.
Set a time limit for a Work session. Read its progress, open the files, or change direction when something new comes up.
Connect Gmail, publishing and marketing tools when you need them. Choose the audience, permissions and budget before enabling external actions.
See how permissions workSTART SMALL
A useful first step is free.
Choose your plan inside the app. Your account shows the current allowance and what each plan includes.
Starter
$29 / month
Continue research, planning and everyday founder work.
Explore StarterMonthly usage allowance
Builder
WORK + BUILD$89 / month
Add focused Work sessions, app builds and connected customer workflows.
Explore BuilderConnections and permissions required
Scale
$199 / month
More usage and app builds as your work grows.
Explore ScaleLarger monthly usage allowance
Prices in USD. Usage limits apply. Hosting, advertising and other external services may charge separately.
GOOD TO KNOW
Before you begin.
What happens when I sign up?
Create your account, tell Lipsius about your startup and add any useful context. It prepares a focused recommendation and working notes. Open Chat to give it a job, or choose the next task from your workspace.
Can it keep working while I am away?
On Builder and Scale, Work sessions run with a 15, 30 or 60 minute limit. They save progress and results, and you can pause, change direction or stop. A session can finish early or stop for a decision. Work also has step and model-call limits; this is not an unlimited, multi-day run.
Will it send emails or spend money on its own?
Connecting an account does not enable automatic actions. Outreach needs an approved audience, a sending limit and your permission. Support replies need review. Publishing and ads have separate permissions, and ad platforms charge your connected account directly. Daily ad allocations are not hard spend caps.
What is still in beta?
Managed database hosting, automatic support sending and managed advertising are unfinished. Social and ad connections need account setup and live validation. AI research and drafts can be wrong, so review consequential claims and results. The Getting started guide explains the current workflows and their limits.
How do paid plans work?
Start with the free beta, then open Billing in the app to review your allowance and choose a plan. Paid plans renew monthly. External services such as hosting and advertising may charge separately. Existing subscribers can manage their plan through the billing portal.
ONE QUESTION IS ENOUGH TO START