Most Powerful Construction Ecosystem. Built by Civil Engineers, for Civil Engineers.
Most Powerful Construction Ecosystem. Built by Civil Engineers, for Civil Engineers.
One Account. A Complete Mobile Apps Suite for Every Purpose.

Stop switching between disconnected tools. From opening CAD blueprints on-site to calculating GPS land area and generating instant BOQs, your entire workflow is now connected in your pocket.
Purpose-Built For Every Task
"Access a powerhouse of specialized engineering apps. From site measurements and CAD viewing to structural calculations and final quoting, our interconnected tools ensure your workflow is fast, accurate, and completely mobile."

Griham GPS: Area Calculator
Griham GPS: Area Calculator
Accurately measure land area, distance, and site perimeters using your device GPS.
Accurately measure land area, distance, and site perimeters using your device GPS.


Griham Construction Calculator
Griham Construction Calculator
Estimate faster, build smarter, and scale your construction firm with advanced tools.

Griham Quote: Invoice Estimate
Generate instant material estimates, invoices, and BOQs right from your phone
Generate instant material estimates, invoices, and BOQs right from your phone

Griham CadView
Griham CadView
View, pan, and manage your architectural CAD drawings directly on your mobile device.
View, pan, and manage your architectural CAD drawings directly on your mobile device.

Griham Codebook: IS Codes
Griham Codebook: IS Codes
IS Codes, State Rules & Construction Manuals in your pocket.
IS Codes, State Rules & Construction Manuals in your pocket.
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Tips, tutorials, and in-depth feature guides to inspire and enhance your Dreelio workflow.

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Tips, tutorials, and in-depth feature guides to inspire and enhance your Dreelio workflow.
