# NOTRZR

> NOTRZR (iPhone/iPad app by Notardec GmbH.)

- Source: https://appshunter.io/ios/app/notrzr/id1598568315 (this page in markdown: same URL + `.md`)
- Developer: [Notardec GmbH](https://appshunter.io/developer/1598098515)
- Category: Business
- Price: Free
- Age rating: 4+
- Requires: iOS 11.0 · 47 MB
- Languages: English
- Released: 2022-01-28
- Data updated: 2026-05-19
- User reviews in markdown: https://appshunter.io/ios/app/notrzr/id1598568315/reviews.md

## What is NOTRZR?

NOTRZR is an App, which allows to establish proof that your were in possession of information and data at a certain point in time. The App makes use of the unique feature of blockchain to maintain a tamper proof timestamp of everything that is written. In addition it uses a cryptographically secured way to proof authenticity and origin of the data. Writing data to blockchain is usually a difficult task, but with NOTRZR it becomes simple and can be performed by anyone without the need of a third party. The App allows to take snapshots or upload files and proofstamp them on blockchain. In combination with the Web Application of NOTRZR, which requires neither login nor any installation to view and read data, the App is a powerful tool for privates and businesses alike to create all kinds of documentation that need a reliable timestamp and might require proof of authenticity.


## Version history (last 5 releases)

### 1.6 — 2023-09-12

In our new version we added support for Proof of Key QR codes, added Transaction's Details and update transactions UI.
General app performance was improved.

### 1.5 — 2023-03-22

In our new version we added record's metadata download option. General app performance was improved.

### 1.4 — 2022-10-05

In our new version we added record's image compression and local storing of attachments. General app performance was improved.

### 1.3 — 2022-07-08

In our new version we have Biometric authentication to securely login without credentials, ability to Delete account, updated UI for wallet creation and transactions.
General app performance was improved.

### 1.2 — 2022-06-14

In our new version we have Expert mode to display extra information, Contacts to save other users, Record's linking to provide direct relations between records and Record's signing for other users to confirm cryptographical linkage of record's document with user's signature.
General app performance was improved.

## More apps by Notardec GmbH

- [BCDOCUDEMO](https://appshunter.io/ios/app/bcdocudemo/id1598098513)

All apps by Notardec GmbH: https://appshunter.io/developer/1598098515

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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 2026-05-19.*