# ReadOnlyReg

> ReadOnlyReg (iPhone/iPad app by Demetrius Barrett.)

- Source: https://appshunter.io/ios/app/readonlyreg/id6760568777 (this page in markdown: same URL + `.md`)
- Developer: [Demetrius Barrett](https://appshunter.io/developer/1505438305)
- Category: Productivity
- Price: Free
- Age rating: 4+
- Requires: iOS 13.0 · 139 MB
- Languages: English
- Released: 2026-03-17
- Data updated: 2026-06-01
- User reviews in markdown: https://appshunter.io/ios/app/readonlyreg/id6760568777/reviews.md

## What is ReadOnlyReg?

ReadOnlyReg is a blockchain-powered data integrity platform built on Polygon. Register documents, issue certificates, log sensor data & verify records — all secured by smart contracts that ensure your data can never be altered or deleted.

PROOF OF EXISTENCE
Hash any document or text and register it on-chain as permanent, timestamped proof. Choose Basic registration for hash-only proof, or Certified for verified and notarized records.

CERTIFICATE REGISTRY
Issue tamper-proof digital certificates to any Ethereum address. Perfect for diplomas, credentials, licenses & compliance documents. Recipients can verify authenticity instantly.

PUBLIC RECORDS LOGGER
Log sensor readings, IoT data, or any structured records on-chain with full transparency. Search by sensor ID, look up entries by ID, or browse all records.

SUBSCRIPTION PLANS
Subscribe with POL directly from your wallet for hands-off access. Pro subscribers get certified registration fees waived and automatic authorization as data providers & certificate issuers.

BUILT-IN WALLET
Create or import an Ethereum wallet secured by your device's keychain and biometrics. No external wallet app required — sign transactions directly within the app.

KEY FEATURES
  - Tamper-proof document registration with Keccak-256 hashing
  - Digital certificate issuance and verification
  - On-chain sensor and public records logging
  - Built-in HD wallet with biometric security
  - QR code scanning for wallet addresses
  - OCR camera scanning for quick data entry
  - Real-time on-chain verification
  - Polygon network for fast, low-cost transactions


## Version history (last 1 release)

### 1.0 — 2026-03-18

No release notes.

## More apps by Demetrius Barrett

- [chainSign](https://appshunter.io/ios/app/chainsign/id6761083360)

All apps by Demetrius Barrett: https://appshunter.io/developer/1505438305

---

*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 2026-06-01.*