# ProofPI: Private Investigator — Surveillance notes & evidence

> Surveillance notes & evidence (iPhone/iPad app by ClearStack Apps.)

- Source: https://appshunter.io/ios/app/proofpi-private-investigator/id6816095529 (this page in markdown: same URL + `.md`)
- Developer: [ClearStack Apps](https://appshunter.io/developer/6798305739)
- Category: Business, Productivity
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 9 MB
- Languages: American English, Arabic, French (France), German (Germany), Hindi, Japanese, Korean, European Portuguese, Chinese (Simplified, China), European Spanish
- Released: 2026-09-25
- Data updated: 2026-10-14

## What is ProofPI?

WHAT IT DOES
ProofPI is the field log and case file for private investigators who keep their own records. It works offline and keeps your records on your phone.

• A case file for each client, with subjects, vehicles, reference photos and the scope of work
• Surveillance sessions with a live on-station timer, start and stop times, and an optional GPS stamp of your own position
• One-tap observations recorded to the minute, plus typed entries. Each entry keeps the time you observed it and the time you recorded it
• Photos from the camera or your photo library, numbered in order and saved at full size, with a SHA-256 fingerprint taken when each photo is saved and a check that the file has not changed since
• Videos fingerprinted where they are: choose a clip and ProofPI records its name, size and SHA-256 fingerprint, then checks any copy against it later
• Case notes for interviews, records searches, database searches and phone calls
• Mileage at your own per-mile rate, and expenses with receipt photos
• Invoices built from your own records: finished time on station at your hourly rate, mileage and expenses, with an invoice number, due date, your payment details and a paid or unpaid status. A one-page billing summary too
• A case-file PDF with a cover page, your signature, each session with its photos and timeline, and an index of every photo with its fingerprint
• An evidence package: one zip with the PDF, the photo files, receipts, spreadsheets and a SHA-256 manifest to share with a client or attorney
• Spreadsheet (CSV) exports of cases, hours, observations, notes, mileage, expenses and invoices
• A full backup in one file that restores on a new phone and only adds what is missing, so nothing already there is overwritten
• A dark theme for night work, a privacy screen that hides the app in the app switcher, and an iPad layout with the case list and the case file side by side

WHO IT'S FOR
• Licensed solo private investigators and small agencies
• Surveillance, insurance and workers' comp investigators
• Anyone who keeps a separate case file per client and may have to produce it later

YOUR RECORDS STAY YOURS
Cases, sessions and photos are stored on your device. There is no account, and nothing is copied to a cloud unless you save a backup there yourself. GPS is used only when you tap to stamp a session, never in the background, and never to locate anyone but you.

ProofPI is a record-keeping and document tool. It is not legal or investigative advice and does not guarantee that any record meets your licensing board's or a court's requirements. A photo fingerprint shows that a file has not changed since it was added; it does not prove who took it or make it admissible. Recordkeeping and retention rules are set by your state and board, so review and adapt your records to your jurisdiction.

Contact: support@clearstackapps.com

SUBSCRIPTIONS
ProofPI Pro is available as a monthly or yearly auto-renewing subscription, or as a one-time lifetime purchase. Payment is charged to your Apple Account when you confirm the purchase. A subscription renews automatically unless you cancel it at least 24 hours before the end of the current period. Manage or cancel it in your Apple Account settings.

Terms of Use (EULA): https://clearstackapps.com/terms
Privacy Policy: https://clearstackapps.com/privacy

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| ProofPI Pro Monthly | $1.99 | per month |
| ProofPI Pro Yearly | $9.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| ProofPI Pro Lifetime | $24.99 | one-time |


## Is ProofPI safe?

Not enough ratings yet to assess ProofPI.

## Is ProofPI legit?

ProofPI: Private Investigator appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for ProofPI is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 2 releases)

### 2.0.1 — 2026-10-08

• Videos: add a clip and ProofPI records its SHA-256 fingerprint, then checks any copy against it
• Invoices: numbered invoices from your sessions, mileage and expenses, with due dates and paid status
• A clear message when the camera cannot open

### 2.0.0 — 2026-09-26

No release notes.

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All apps by ClearStack Apps: https://appshunter.io/developer/6798305739

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-14.*