Platform
Windows desktop, 64-bit (x64). Qualified minimum requirements are published before launch.
Release status
Lambda PDF Basic is coming soon for Windows
Lambda PDF Basic is a Windows desktop application in development and release qualification. It launches when qualification is complete. No date is published yet; this page is updated as release work progresses.
01
Context
A release is ready when the product is, not when a date arrives
A desktop PDF editor must preserve documents and working state, render consistently, protect user information, remain responsive on qualified systems, activate licences reliably, and install, update, and recover predictably.
Lambda PDF Basic launches after those qualities pass release criteria. Until then nothing is sold, reserved, or downloadable.
02
Workflow
How release qualification is progressing
- 01
Integrate the PDF editor, document persistence, licensing, and installation paths into one Windows application.
- 02
Validate rendering, security, performance, accessibility, packaging, activation, recovery, and supported Windows behaviour against release criteria.
- 03
Publish qualified system requirements, open purchasing, and make the signed installer available at launch.
03
Scope
What launch includes
Product
Lambda PDF Basic: viewing, editing, page organization, markup, forms, signing, creation, optimization, and document security.
Commercial terms
One launch price for a perpetual licence. The price is published now so you can plan; purchasing opens at launch.
04
Roadmap
What happens next
The roadmap states sequence, not dates. Each step happens only when the previous one has passed its checks.
Now: development and qualification
The PDF editor is in development. The licensing, installer, and privacy designs are written and being implemented.
Next: early-access registration reopens
Early-access registration reopens once secure intake and privacy-request operations are complete.
At launch: purchase and download
Accounts, checkout, activation, and the signed installer open together, each only after its own security review.
After launch: updates
Updates within the version you own install through the same signed installer, verified before anything runs.
05
Who it is for
- People who want to know when Lambda PDF Basic will be available
- Buyers planning a purchase at the published launch price
- Reviewers who need a precise boundary between intended capabilities and released behaviour
06
What this release status does not promise
The site does not distribute an installer, accept payment, sell a licence, issue an activation key, or guarantee a launch date.
The first release is a Windows desktop application. It is not described as a web, mobile, or macOS product.
07
Questions
Questions about release status
It is coming soon for Windows. No date is published yet; it launches when release qualification is complete, and this page will be updated first.
No. The website does not distribute an installer or sell licences yet. The launch price is shown on the pricing page, purchasing opens at launch, and early-access registration is currently paused.
Lambda PDF Basic launches for Windows only. No other platform is announced.
Own the PDF editor you use every day.
One price, once: a perpetual licence for a local-first PDF editor on Windows. The price is published now; purchasing opens at launch.
See pricing