KnownGood
A record for your test instruments on iPhone and iPad. Keep each instrument’s calibration certificates and due dates, your own checks against a reference between certificates, and a PDF record you can hand over.
See it in action
Every instrument’s record in one place
Instrument register
Multifunction testers, insulation and loop testers, flue gas analysers, detector testers, lux meters and more, each with make, model, serial number, asset ID and status.
Calibration certificates
Record the dates, lab, certificate number and as-found result, and attach a photo or PDF of the certificate.
Due-date reminders
Each instrument shows its certificate due date. If you allow notifications, KnownGood reminds you 30 days and 7 days before, and on the day.
Your own checks
Set up each instrument’s functions and test points once. Record the reference you used and each reading; the first check sets your baseline.
Flagged readings
Readings outside the baseline and tolerance you chose are marked Flagged so you can decide what to do. The judgement on an instrument stays with you.
Repairs and other events
Log repairs, damage, loans and other events against each instrument, alongside its certificates and checks.
PDF instrument record
Export certificates, checks with the reference used, events, remarks and your sign-off with your saved signature. Every page is A4. Share, print or save to Files.
For trades and teams
For electricians, gas engineers, fire alarm and emergency lighting engineers, and anyone who looks after test instruments for a team.
Unlimited with Pro, no sign-up
Pro gives you unlimited instruments, your company branding on PDFs and sync through your own private iCloud. Works without an internet connection.
Free for one instrument
Free
£0
One active instrument with certificates, checks, events, reminders and PDF export. No ads, no time limit.
Pro Yearly
£24.99 / year
Unlimited instruments, your company branding on PDFs and iCloud sync. Starts with a 7-day free trial for eligible new subscribers.
Pro Lifetime
£74.99 once
Everything in Pro with a single one-off payment. No subscription.
The yearly subscription renews automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel it any time in your App Store account settings. See the Terms of Use.
A record, not a verdict
KnownGood is a record-keeping tool. It does not test, verify, calibrate or sign off any instrument, and it does not replace a calibration certificate from a calibration lab. Deciding whether an instrument is fit to use stays with you.
Independent app, not affiliated with or endorsed by any assessment scheme.
Coming soon to the App Store
KnownGood is on its way to the App Store. From the developer of StandbyCalc, CallPoint and ExitPath. Want to know when it’s live? Email [email protected].
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