Concrete cylinder breaks and client reports, straight from the lab.

Breaksheet is an iPhone and iPad app for concrete testing labs and third-party testers. It tracks hardened cylinder sets from the field to the break machine, records ASTM C39 compressive strength breaks, and produces a client-ready PDF report with an audit trail behind every result.

It's built for lab techs, QC managers, and independent testers who are tired of paper break sheets and spreadsheets. Each set is checked against its specified strength (f'c), so pass or fail is clear before the report goes out.

Breaksheet is the sister app to Entraine, which handles fresh concrete and casting in the field. Labs using both can join a company by code and share set data between the two apps through iCloud.

On this device, unless you join a company

Casts, photos, GPS, letterhead, and the audit trail live on this device. Demo seed never leaves the device. Join the same company code as Entraine to share live cylinders through your iCloud account.

Features

Cylinder set tracking with QR labels.
ASTM C39 compression break logging, with an acceptance flag against f'c.
Client PDF reports you can email, with a light e-signature.
Break machine CSV import.
DOT template packs.
An audit trail on every result, plus company sync with Entraine.

Support — join codes, the first-sync message on the Company card, and Sync now.