Costas – Cost Estimating
Should-Cost from STEP & CAD
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
What should your assembly cost? Open a STEP file, get the should-cost of every part – calculated entirely on your device.
Costas works out the should-cost of your parts and complete assemblies straight from a STEP file – on iPhone or iPad. Your CAD data never leaves the device.
HOW IT WORKS
• Open a STEP file (.step/.stp) – a single part or a complete assembly
• Costas breaks the assembly down into its parts, recognises standard parts such as screws, nuts, washers and pins, and suggests the right manufacturing process for every made part
• Geometry is analysed per process: pockets, holes and setups for milling, bends and flat pattern for sheet metal, the cross-section for extrusions
• You get the should-cost of your assembly, broken down by cost type such as material, machining, setup, tooling, logistics and overhead
• Change material, quantity, process and manufacturing region – costs update instantly
OPTIMISE COSTS
Costas suggests alternative materials and manufacturing processes matched to your quantity – casting instead of milling, for example, once the tooling pays off. See at a glance how the price changes with quantity and between manufacturing regions.
PREPARE FOR PRICE NEGOTIATIONS
When a supplier announces a price increase, check it against how wages, energy, producer prices and raw materials have actually moved in their manufacturing region since the last price date. Costas shows which increase is justified and which isn't, and puts your arguments into a PDF for the meeting.
PROCESSES AND REGIONS
Milling, turning, sheet metal, extrusion, injection moulding, die casting, sand casting and 3D printing (FDM, SLA, SLS, MJF, SLM) – calculated for seven manufacturing regions with their own rates: Germany, Italy, Poland, Czech Republic, Hungary, USA and China.
WHO IT'S FOR
Procurement and cost engineering, design, industrial engineering, sourcing and management – wherever a quote needs a sanity check, a price demand needs challenging or a design decision should be cost-aware.
COSTAS PRO
The sample assembly is always free to explore. Costas Pro unlocks everything: import your own STEP files without limit, create custom regions with your own rates and export PDF/CSV without branding. The first two weeks are free and fully unrestricted – analyse as many of your own assemblies as you like. After that, Pro continues monthly or yearly and can be cancelled at any time. The subscription renews automatically unless cancelled at least 24 hours before the end of the current period in your Apple account settings.
Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy: https://matthias104.github.io/costas-app/privacy.html
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Matthias Edelmann, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Matthias Edelmann
- Size
- 54.8 MB
- Category
- Business
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later. - iPad
Requires iPadOS 26.0 or later. - Mac
Requires macOS 26.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.0 or later.
- iPhone
- Languages
- English and German
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Costas Pro Monthly $22.99
- Costas Pro Yearly $179.99
- Copyright
- © 2026 Matthias Edelmann