PAT Testing Log & Cert
PAT certificates. From your phone.
A private, offline-first PAT log and certificate maker for electricians, PAT testers and landlord-compliance contractors. Enter readings from any tester, build an asset register, track retest dates, and export a clean PDF certificate — no Windows program, no tester lock-in.
How it works
Add the site & appliances
Create a site for the client, then add each appliance to its asset register — asset ID, description, class (I, II, III) and location. Scan a barcode to fill the tag, or type it by hand.
Log the test
Record the visual inspection, earth continuity and insulation resistance from any tester, plus polarity and functional checks — then mark PASS or FAIL. The app shows the pass-limit guidance for the class and computes the next-due date.
Certify & track
Generate a clean PDF certificate and asset register on the phone, or export the register as CSV. The Retests view keeps your return visits honest, soonest-due first, with reminders.
in Action
An overview of every test, appliance and what is due.
Your sites and clients in one place.
A site asset register, with next-due flags.
Per-appliance test history, kept across visits.
The test record — readings, checks and guidance.
What is due for retest, soonest first.
Settings: tester profile, theme, reminders.
Features
Works with any tester
Hardware-agnostic manual entry — type readings from Kewtech, Megger, Seaward, Fluke, Martindale or no-brand. No lock-in to one manufacturer.
PDF certificate on the phone
Generate a clean PAT test certificate and an asset register report offline — no Windows program, no PC transfer, no second purchase. Share or email straight away.
Asset register
Every appliance persists across visits with its class, make/model, location and next-due retest date. The inventory the client keeps.
Class-aware readings
Earth continuity for Class I, class-dependent insulation resistance for I and II, none for SELV — with the IET Code of Practice pass-limit shown as guidance.
Scan-to-recall
On a return visit, scan an existing asset tag and the app opens that appliance straight into a new test — no duplicates. Manual entry is always there too.
Retest reminders
Risk-based retest intervals set the next-due date; the Retests view lists what is coming up across every site, with optional reminders.
Your PASS / FAIL
The overall result is your professional judgement — the app records it, it never computes or certifies it. A FAIL can drop an appliance out of service while keeping its history.
Tester profile
Your name, company, competency and a drawn signature — carried onto every certificate. A default test-instrument field pre-fills new tests.
CSV export
Export the asset register as CSV so your data is never locked in — alongside the PDF certificate and register.
On-device, no account
Sites, appliances, tests, photos and PDFs live in a local database on your phone. No login, no cloud sync, nothing sold.
Offline-first
Log a test and export a certificate with no signal — in a plant room or a basement. The network is used only for ads on the free tier, purchases and crash reports.
A record-keeper, not a certifier
PATBook helps you record results and prepare a certificate. It does not determine or guarantee whether any appliance is safe — that is the tester's judgement.
Pricing
Try every feature for 14 days with no card. After the trial, pick the tier that fits — your past sites, appliances, tests and certificates stay available and re-exportable regardless.
Monthly
- Unlimited sites & appliances
- Clean certificates — no watermark
- Removes ads
- Cancel anytime in Google Play
Lifetime
- All Pro features, forever
- No renewal, no surprises
- Future updates included
- Removes ads
Yearly
- Unlimited sites & appliances
- Clean certificates — no watermark
- Removes ads
- Renews annually until cancelled