Private Investigator Log
Your case file. Your evidence. Your device.
Keep a separate, timestamped file for every client. Log surveillance sessions with a chronological observations timeline, record the details you lawfully observed, attach photo evidence and track mileage — then export a court-style case-file PDF. Offline-first, and your records never leave your phone.
How it works
Open a case file
Enter the client or attorney, a case or matter number, the case type, the subject(s) of investigation and your scope or instructions. Every session, observation, photo and mileage entry is grouped under this client file.
Run a surveillance session
Start the session, optionally stamp your own GPS location, and add timestamped observations one-handed as events happen. Record what you lawfully observed — subject, vehicle, address — and attach photo evidence. Stop the session when you stand down.
Export your case-file PDF
Add your investigator details and signature, then export a court-style PDF with the session log, the chronological observations timeline, mileage and an evidence index. A defensible record you own — ready for your instructing attorney.
in Action
Every client file at a glance.
Sessions and mileage per case.
One-handed observations timeline.
Log a session with GPS + photo.
Features
Per-client case files
A separate, timestamped file for each client — case type, subject(s), instructing contact, scope and status. Your evidence stays organized and never bleeds between clients.
Chronological observations log
Add timestamped observations one-handed while you work. Each entry is locked to the moment it was recorded — the running narrative that holds up when a session is questioned.
GPS-stamped sessions
One tap records your own current location on a session — foreground only, asked each time. ProofPI never tracks in the background and never locates anyone but you.
Subject & vehicle detail
Log the subject, vehicle make / model / colour / plate and address you lawfully observed — the specifics that make a surveillance record credible.
Photo evidence
Capture evidence photos directly from the app. Images are compressed and stored on your device alongside the session that produced them.
Mileage per case
Track miles per client by odometer or direct entry, with a rate per mile, so your billing and expense record matches your case log.
Court-style PDF export
Export a case-file PDF with your signature, the session log, the chronological observations timeline, mileage and an evidence index — ready for your instructing attorney.
Records stay yours
No cloud sync, no server account. Cases, sessions and photos are stored on your device. ProofPI is a record-keeping tool — it does not own your data.
10 languages
Full UI in English, Spanish, French, German, Portuguese, Hindi, Arabic, Japanese, Korean and Chinese. Legal and template wording stays in authoritative English.
Pricing
Try every feature for 14 days with no card. After that, pick what fits. All existing records stay viewable and every case-file PDF stays re-exportable — always.
Monthly
- Unlimited cases & sessions
- GPS + photo logging
- Case-file PDF export
- No ads
Lifetime
- Everything, forever
- No renewal, no surprises
- Future updates included
- No ads
Yearly
- Unlimited cases & sessions
- GPS + photo logging
- Case-file PDF export
- No ads