NDAKey vs Nomion Certificate
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
NDAKey
Manage your digital identity securely. Store verified credentials on your device and choose exactly what information to share with others. Protect your data with end-to-end encryption and passwordless sign-in.
- Selective information sharing
- End-to-end encrypted data transmission
- Store digital credentials on device
- Passwordless sign-in with passkeys
- Receive and manage credentials
- Direct sharing via QR code
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NDAKey is a self-sovereign data management app that allows users to store digital credentials on their phones and selectively choose which information to share. Digital credentials contain user information that has been verified and digitally signed by an issuer, such as subscriber information verified by a telecommunications provider. Each credential is issued once and can be reused multiple times during its validity period at organizations connected to NDAKey. KEY FEATURES 1. Selective Sharing - Select individual information fields to share, such as full name and place of birth, without including permanent residence. - Review the data recipient's name, purpose of use, and requested information before giving consent. - Confirm each sharing request using Face ID or Touch ID. 2. Data Protection - End-to-end encryption during data transmission, ensuring that only the recipient can decrypt the data. - Digital credentials are stored on the user's device. - Passwordless sign-in using passkeys. 3. Receive and Manage Digital Credentials - Open your wallet using a chip-enabled national ID card and facial verification. - Request credentials from issuers connected to NDAKey. - Track the validity of each credential, including expired or revoked status. 4. Direct Sharing via QR Code - Scan a QR code to receive a request for information sharing. - Generate a QR code to share digital credentials or request credentials from another person in person. 5. Account Management - View the history of credential sharing, receiving, and issuance. - Manage passkeys and signed-in devices. - Delete your account directly within the app. Note: Digital credentials in NDAKey provide supplementary information and do not replace documents issued by competent government authorities. Acceptance of digital credentials depends on each data recipient.
Nomion Certificate
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Nomion Identity sử dụng công nghệ NFC để xác thực nhanh chóng an toàn chính xác. Nomion Identity sử dụng công nghệ NFC (Near Field Communication), cho phép người dùng xác thực chứng chỉ và thông tin liên quan chỉ với một chạm. Bằng cách sử dụng thiết bị điện thoại hỗ trợ NFC, hệ thống đảm bảo việc truy xuất dữ liệu nhanh chóng, an toàn và chính xác.
Screenshots
Verdict
The clearest difference is update cadence: Nomion Certificate at fortnightly against NDAKey's monthly. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
NDAKey ships an update monthly, Nomion Certificate fortnightly. The most recent releases landed on November 4, 2026 and October 25, 2026 respectively.
| Parameter | NDAKey | Nomion Certificate |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| Update frequency | Monthly | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 16.0 | 15.6 — better |
| Further details — not scored | ||
| Size | 116 MB | 12 MB |
| Age rating | 17+ | 4+ |
| Developer | PILA GROUP JOINT STOCK COMPANY | Phygital Labs |
In-app purchases
NDAKey
No in-app purchases
Nomion Certificate
No in-app purchases









