About
This app is a time study instrument designed for industrial engineers to measure work elements, rate performance, and calculate standard times. It offers a unique cycle dial for real-time pace tracking and robust statistical analysis tools. Data can be exported for further analysis in spreadsheets.
What's New in Therblig
1.4
August 11, 2026
- An interactive guided tour — take it anytime from the ? button. - Haptic button with sound click.
In-App Purchases
$39.99
Therblig — Time Study
One purchase. Yours forever.
FAQ
What is Therblig used for?
Therblig is a time study instrument for industrial engineers. It helps in breaking down jobs into elements, timing cycles, rating performance, and calculating statistically defensible standard times.
How does Therblig's cycle dial work?
The cycle dial displays each work element as an arc, sized by its observed mean. One revolution of the hand represents one mean cycle, allowing users to quickly see if the operator is ahead of or behind pace.
Can Therblig handle interruptions or errors?
Yes, Therblig can capture foreign elements to account for interruptions without affecting your main data. It also features an 'undo' function to remove mis-taps and rewind the sequence.
What statistical features does Therblig offer?
Therblig plots every reading on a dot strip for outlier identification, offers sample-size checks for precision, and calculates coefficient of variation, standard deviation, and cycle-time trends per element.
How is performance rating handled in Therblig?
Performance rating can be done manually or using the built-in Westinghouse leveling guide, which considers skill, effort, conditions, and consistency for each element.
What are the pricing options for Therblig?
Therblig is free to start, offering two complete studies with all features. Therblig Pro unlocks unlimited studies with a single, one-time purchase, with no subscription required.
What devices does Therblig support?
Based on the available data, Therblig is supported on iPhones.
How often is Therblig updated?
The latest version of Therblig is 1.4, and it was last updated on August 11, 2026. This indicates a recent update, suggesting ongoing development and support.