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Get AirSign Pro
Stop uploading your sensitive PDFs to the cloud. AirSign is the beautifully fast, 100% offline desktop app built for professionals who value privacy.
Open any PDF, JPG, or PNG file by simply dragging it into the window. Images are automatically converted to PDF in the background, ready for your signature in under a second.
Use your mouse or trackpad to draw a fluid, natural-looking signature. Save it once and reuse it across all your documents. Place it anywhere with a single click.
Type text anywhere on the document and resize it dynamically by dragging the corners. Fill out forms, add dates, notes — everything snaps perfectly into place.
Apply professional stamps like APPROVED, VERIFIED, DRAFT, PAID, or Today's Date with a single tap. Rotate, mirror, or delete pages directly from the responsive Glassmorphic Sidebar.
Signatures drawn with AirSign are fully compliant as Simple Electronic Signatures (SES) under the eIDAS Regulation (EU) and the ESIGN Act (US), providing legal validity for NDAs, freelance agreements, and everyday business contracts without exposing your data.
An objective architectural, financial, and operational assessment comparing AirSign against traditional e-signature solutions.
| Strategic Vectors |
AirSign
|
DocuSign | Adobe Sign | Open-Source |
|---|---|---|---|---|
| 1. DATA ARCHITECTURE & RISK MANAGEMENT | ||||
| Deployment Model | 100% Local Edge (Offline) | Cloud Multitenant | Cloud Multitenant | Self-Hosted / Local |
| Breach Risk Exposure | Zero Attack Surface | High 3rd-Party Risk | High 3rd-Party Risk | Config-Dependent |
| Data Sovereignty | Absolute Compliance | Subject to US CLOUD Act | Subject to US CLOUD Act | Customizable |
| 2. FINANCIAL ANALYSIS & TCO (36-MONTH) | ||||
| Pricing Model | One-time CapEx (€29) | Recurring OpEx ($120-480/yr) | Recurring OpEx ($150-600/yr) | Free (Server OpEx) |
| 36-Month TCO (Per User) | €29 (Max Marginal Efficiency) | €360 — €1,440 | €450 — €1,800 | €100 — €300 (DevOps) |
| Contractual Flexibility | Total License Ownership | Subscription Lock-in | Subscription Lock-in | Zero Lock-in |
| 3. OPERATIONAL EFFICIENCY & TIME-TO-VALUE | ||||
| Onboarding Friction | Zero (Instant Execution) | Account + SSO + SMS | Account + SSO + Auth | Docker / Build Setup |
| UX Learning Curve | Zero-Training UI | Enterprise Bloatware | Enterprise Bloatware | Technical / Non-Intuitive |
From opening a file to exporting a signed PDF — in seconds.
Yes. AirSign runs entirely on your local machine. We don't have servers, we don't upload your documents, and we don't collect your data. Your PDFs never leave your hard drive.
Absolutely. Signatures drawn with AirSign qualify as Simple Electronic Signatures (SES) and are legally valid under EU (eIDAS) and US (ESIGN) laws for most business contracts, NDAs, and agreements.
No. AirSign is a one-time purchase. You buy it once, and you own the current version forever. No subscriptions, no hidden fees.
Join professionals who trust AirSign to keep their documents safe and local.
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