Archived App (Last seen on 29 Aug 2026)
This is an archived listing of the app previously available on the App Store.Although the app is no longer distributed by Apple, you can still view its description, screenshots, version history, ratings, and metadata for reference.
About
The VAKKA series concrete maturity and relative humidity sensors are among the fastest and most reliable concrete sensors available today. VAKKA is designed and manufactured in the USA by HGCR Technology, (HGCR) LLC. VAKKA boasts the world’s fastest environmental stabilization time by drastically reducing condensation. Within minutes of concrete placement, thanks to our patent-pending protective sensor housing, the project manager will be able to immediately begin to collect temperature and/or RH data at the time of placement. With correct data throughout the monitoring period, the maturity estimates become more accurate. VAKKA conforms to ASTM C1074, ASTM 2170, ACI 318, ACI TC 228, and most DOT specifications.
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What's New in VAKKA Temp RH Concrete Sensor
1.46
April 27, 2023
Minor bug fixes
