For utilities and training providers

Team licences, your own operating limits and branding built in, and question banks matched to your training course.

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Know an operator studying for a certificate? Send them the app.

How to use it

• Calculate: overwrite the example values with your readings. Results, checks and the full working update as you type. Your entries are remembered on this device.
• Plant: set up your plant once. Its volumes and areas fill the calculators, daily rounds are checked against your own limits, and trends show how things are moving.
• Diagnose: pick a symptom to see likely causes, what to check and what to do.
• Ranges: typical values to compare your plant against.
• Quiz: exam practice by topic, timed mock exams, unlimited maths drills and a review of your mistakes.
• Search: the search box at the top finds any calculator, symptom or range, offline.
• Favourites: tap ☆ on a calculator to pin it to the top of the list.
• Abbreviations: tap any dotted-underlined abbreviation (such as SRT) to see what it means, or open the full glossary.
• Starter calculators: pick your role again to pin a different starter set. Choose →
• Formulas and theory: the principle behind every calculator, its assumptions and limits, and tips for using it on a real plant. Open →
• Logbook: tap “Save to log” on a calculator to keep a dated record of your readings and results.

Before you rely on a value

Settings

Units

Appearance

Calculators, ranges, troubleshooting and maths questions all follow your unit choice. Written quiz questions give SI with US equivalents where useful.