Comparison

BioID Facial Recognition vs Idum Authenticator

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

Head to head
About

BioID Facial Recognition

This app offers secure, multifactor user authentication using facial recognition and liveness detection. It allows end-users to log in or authorize transactions conveniently and securely, replacing traditional passwords. Developers can easily integrate this biometric security into their mobile platforms.

Highlights
  • Multifactor user authentication
  • Facial recognition
  • Liveness detection
  • Secure login and transaction authorization
  • Developer integration
  • Password replacement
Read full description

The BioID app is a multifactor user authenticator – see how well face recognition works today! Developers and companies can easily add biometric authentication to their mobile platforms with a few lines of code. Their end users can log in or authorize transactions securely and conveniently. Forget passwords. Be recognized. EASY MULTIFACTOR AUTHENTICATION WITH MOBILE FACE RECOGNITION WHY BIOMETRICS? Password hacks make headlines almost every week: a password alone is not secure enough. And typing a long, complicated password on a mobile device is difficult and annoying. Multifactor authentication systems using factors like software/hardware tokens or biometric security are becoming more common. Biometric authentication such as facial recognition verifies the physical presence of the user, for easy, strong multifactor authentication using only the user’s mobile device with no extra hardware needed. WHAT DOES THE APP DO FOR ME? The BioID app provides multifactor user authentication (biometrics + mobile device). It is a mobile client for BioID Connect, an identity service based on our BioID Web Service (BWS) – the original 'biometric as a service' with our patented 'fake defender' liveness detection – and supporting OpenID Connect and OAuth 2.0. • End users can use it as a mobile authenticator to log in to any apps and websites that support the app (including our BWS developer portal). • Developers and companies can easily add secure, convenient face recognition to their mobile platform (websites or native apps), without any knowledge of biometrics. • Anyone can try out our biometric technology and see how well state-of-the-art face recognition works. The app currently supports liveness detection against photo attacks, and challenge-response to prevent video replay attacks. PROTECT YOUR EMPLOYEES As an administrator, improve the security of your authentication simply by supporting BioID Connect through industry standard OpenID Connect / OAuth 2.0 protocols. PROTECT YOUR USERS As a developer, enhance app or website security with just a few lines of code by supporting BioID Connect. We take care of all the biometrics and the associated user interface; you get instant biometric security. PROTECT YOURSELF As a user, get simple and user-friendly stronger security for the growing number of apps and websites that support BioID Connect.

About

Idum Authenticator

Features
Read full description

Idum Authenticator keeps your two-factor codes private and locked behind Face ID. Lost your phone or upgrading to a new iPhone? Turn on iCloud Sync in Settings and your codes come back automatically—end-to-end encrypted via iCloud Keychain. Generate TOTP and HOTP codes for the sites and apps you already use. Scan a QR code or paste an otpauth:// URI. By default, secrets stay on this device only. When you enable iCloud Sync in the app AND iCloud Keychain in iOS Settings, your Spaces and OTP secrets are stored in iCloud Keychain (E2E encrypted, not iCloud Drive or CloudKit). No Idum account required. The free plan stores up to 4 accounts; Idum Authenticator Pro unlocks unlimited accounts. WHY IDUM AUTHENTICATOR • Optional iCloud Keychain sync—OFF by default; you control it • Unlock with Face ID or Touch ID, then a 6-digit PIN • TOTP and HOTP (SHA-1 / SHA-256 / SHA-512, 6–8 digits) • Scan setup QR codes with the camera, or import from Photos / Files • Copy a code with one tap • No Idum account, no analytics, no ads GET STARTED • Create a PIN on first launch • Tap Add account and scan your service's QR code • Codes refresh automatically; HOTP counters increment when you copy • Enable iCloud Sync in Settings if you want restore on a new device PRIVACY • Default is local-only (Keychain on this iPhone) • Optional iCloud Keychain sync (E2E encrypted, user must enable) • PIN and Face ID unlock never sync—always this device only • Camera is used only to scan setup QR codes • Face ID is used only to unlock the app SUBSCRIPTIONS Idum Authenticator Pro (unlimited accounts) is available as: • Weekly auto-renewable subscription — €4.99 per week • Yearly auto-renewable subscription — €32.99 per year • Lifetime unlock — €78, one-time (non-consumable) Payment is charged to your Apple ID at confirmation of purchase. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel in iPhone Settings → Apple ID → Subscriptions. Prices are for the France / Euro storefront; other regions may differ. Support: https://macapps.idum.app/support/ Privacy Policy: https://macapps.idum.app/apps-privacy/ Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

BioID Facial Recognition3 screens
Idum Authenticator3 screens

Verdict

The call

The clearest difference is in-app purchases: BioID Facial Recognition at none against Idum Authenticator's 3. BioID Facial Recognition also leads on device support (4 vs 1) and iOS requirement (13.0 vs 18.0). Idum Authenticator's advantage is update cadence (every 2 days vs every 3 months). On price and ads 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. Idum Authenticator sells 3 in-app purchases, starting at $3.99 per 7 days. BioID Facial Recognition asks for nothing beyond the download.

UpkeepUpdate frequency

BioID Facial Recognition ships an update every 3 months, Idum Authenticator every 2 days. Both last shipped on September 30, 2026.

Scorecard4 real differences · 6 level
BioID Facial Recognition versus Idum Authenticator: the parameters behind the verdict, then further details
ParameterBioID Facial RecognitionIdum Authenticator
PriceFreeFree
Rating2.1 (56 ratings) — better—
Positive reviews13.9% of reviews—
Number of ratings56 — better—
Update frequencyEvery 3 monthsEvery 2 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPod, Mac — betteriPhone
Requires iOS13.0 — better18.0
Further details — not scored
Size2 MB9 MB
Age rating4+4+
DeveloperBioID GmbHIDUM

In-app purchases

None

BioID Facial Recognition

No in-app purchases

3 purchases

Idum Authenticator

Subscriptions2
  • Idum Authenticator Pro Weekly$3.997 Days
  • Idum Authenticator Pro Yearly$29.991 Year
One-time1
  • Idum Authenticator Lifetime$69.00

Questions

Is BioID Facial Recognition free?
BioID Facial Recognition is free to download, with no in-app purchases.
Is Idum Authenticator free?
Idum Authenticator is free to download, with in-app purchases available.
Do BioID Facial Recognition or Idum Authenticator have ads?
Neither BioID Facial Recognition nor Idum Authenticator shows ads.
Which is updated more often, BioID Facial Recognition or Idum Authenticator?
BioID Facial Recognition ships an update every 3 months, and Idum Authenticator every 2 days. Most recently, BioID Facial Recognition was updated on September 30, 2026 and Idum Authenticator on September 30, 2026.

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