Pricing
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Standard
Core member STM design — coping, footings (spread · pile · abutment), deep beams, corbel, frame corner · free modeling & DXF import · 5 design codes (KDS strength design & limit state · ACI 318 · AASHTO LRFD · Eurocode 2) · reports · AI weekly cap 1×
Pro
Everything in Standard · 3D STM (pile cap · pier/abutment grids) · PSC (anchor plate · anchorage zone · box girder) · lattice girder · AI weekly cap 5×
AI usage is metered on a 5-hour rolling window with a weekly cap (Standard 1× · Pro 5×). Analysis and design checks run locally via WebAssembly and are unlimited on every plan.
Team / Network
Floating multi-seat, starting at $6,000. Seats × unit price, 5+ seats 10% off. For purchase orders, tax invoices, or larger deployments: Contact us
Standard
Core member STM design — coping, footings (spread · pile · abutment), deep beams, corbel, frame corner · free modeling & DXF import · 5 design codes (KDS strength design & limit state · ACI 318 · AASHTO LRFD · Eurocode 2) · reports · AI weekly cap 1×
Pro
Everything in Standard · 3D STM (pile cap · pier/abutment grids) · PSC (anchor plate · anchorage zone · box girder) · lattice girder · AI weekly cap 5×
AI usage is metered on a 5-hour rolling window with a weekly cap (Standard 1× · Pro 5×). Analysis and design checks run locally via WebAssembly and are unlimited on every plan.
Team / Network
Floating multi-seat, starting at ₩8,400,000. Seats × unit price, 5+ seats 10% off. For purchase orders, tax invoices, or larger deployments: Contact us
Compare plans
| Feature | Free | Standard | Pro |
|---|---|---|---|
| Design & analysis | |||
| Browser-based STM design (2D) | ✓ | ✓ | ✓ |
| Browser-based STM design (3D) | – | – | ✓ |
| 5 design codes (KDS · KDS-LSD · ACI 318 · AASHTO LRFD · Eurocode 2) | ✓ | ✓ | ✓ |
| Free modeling & DXF import | ✓ | ✓ | ✓ |
| Verified calculations (automated gate suite) | ✓ | ✓ | ✓ |
| Nodes per model | 15 | Unlimited | Unlimited |
| Templates | |||
| Standard templates (coping · footings · deep beam · corbel · frame corner) | ✓ | ✓ | ✓ |
| Advanced templates (3D STM · PSC · lattice girder) | – | – | ✓ |
| Output & platform | |||
| Watermark-free output | – | ✓ | ✓ |
| Export — save · DXF export · print | – | ✓ | ✓ |
| Desktop app (Windows) | – | ✓ | ✓ |
| AI assistance | |||
| AI review assistant | – | ✓ | ✓ |
| AI weekly usage | – | 1× | 5× |
Pricing FAQ
How is the yearly price set?
Yearly = monthly × 10 — two months free compared to paying monthly.
What exactly does Perpetual include?
Perpetual licenses cover the desktop app only and include 1 year of updates. After that the license keeps working forever; staying current is an optional update subscription at 20% of the perpetual price per year.
What counts against the AI cap?
Only AI-assisted operations (e.g. AI model suggestions and review assistance). Structural analysis and code checks run locally in WebAssembly and never count against any cap.
Can I try before paying?
Yes — the always-free tier runs in the browser after a Google sign-in (up to 15 nodes, watermarked; no payment details). Evaluate whether the structure solves and the results are right on screen; a subscription unlocks unlimited nodes and full export.