Comparison

Công Viên Xanh vs NDAKey

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Công Viên Xanh

Features
Read full description

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About

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.

Highlights
  • 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
Features
Read full description

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.

Screenshots

Công Viên Xanh4 screens
NDAKey4 screens

Verdict

The call

The clearest difference is update cadence: Công Viên Xanh at every 3 days against NDAKey's monthly. Công Viên Xanh also leads on iOS requirement (13 vs 16.0). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Công Viên Xanh ships an update every 3 days, NDAKey monthly. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

Scorecard2 real differences · 6 level
Công Viên Xanh versus NDAKey: the parameters behind the verdict, then further details
ParameterCông Viên XanhNDAKey
PriceFreeFree
Positive reviews—100.0% of reviews
Update frequencyEvery 3 days — betterMonthly
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPodiPhone, iPad
Requires iOS13 — better16.0
Further details — not scored
Size28 MB116 MB
Age rating17+17+
DeveloperSandboxVN Technoloy JSCPILA GROUP JOINT STOCK COMPANY

In-app purchases

None

Công Viên Xanh

No in-app purchases

None

NDAKey

No in-app purchases

Questions

Is Công Viên Xanh free?
Công Viên Xanh is free to download, with no in-app purchases.
Is NDAKey free?
NDAKey is free to download, with no in-app purchases.
Do Công Viên Xanh or NDAKey have ads?
Neither Công Viên Xanh nor NDAKey shows ads.
Which is updated more often, Công Viên Xanh or NDAKey?
Công Viên Xanh ships an update every 3 days, and NDAKey monthly. Most recently, Công Viên Xanh was updated on November 3, 2026 and NDAKey on November 4, 2026.

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