Comparison

OTP vs Screen tester

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

Head to head
About

OTP

This app generates secure one-time passwords for two-factor authentication on your device. It supports various protocols, allows easy account setup via QR codes or manual entry, and offers robust security features like biometric locks and encrypted backups.

Highlights
  • TOTP & HOTP code generation
  • QR code scanning for setup
  • Biometric app lock (Face ID/Touch ID)
  • Encrypted data export/import
  • Account grouping and organization
  • Dark Mode support
  • iCloud sync and backup
Features
Read full description

OTP-Auth is a beautifully designed two-factor authentication (2FA) app that generates one-time passwords on your iPhone. Supporting both TOTP and HOTP protocols, it adds an essential layer of security to all your online accounts. KEY FEATURES: - Generate TOTP & HOTP verification codes offline - Scan QR codes or add accounts manually - Tap to reveal code and copy to clipboard - Face ID & Touch ID biometric app lock - Dark Mode with system, light, and dark themes - iCloud sync and backup across devices - Export & import data with AES-256-GCM encryption - Import from Google Authenticator, 2FAS, and Aegis - 60+ branded service icons with auto-matching - Account grouping with drag-and-drop reorder - Search and sort by name, type, or custom order - Modern card-style UI with smooth animations SECURITY FIRST: Your authentication secrets never leave your device or your iCloud. Encrypted exports use AES-256-GCM. Biometric authentication keeps your codes private even if someone has your phone. IMPORT & EXPORT: Easily migrate from other authenticator apps. OTP-Auth supports encrypted JSON, plain text URI, 2FAS backup, Aegis vault, and Google Authenticator QR migration. Export your data securely with password-protected encryption. ORGANIZE YOUR WAY: Group accounts into custom folders, drag and drop to reorder, and use the built-in search to find any account instantly. Hide codes by default and reveal with a tap. PERMISSIONS: Camera access is required for scanning QR codes to add accounts. Learn more about OTP verification: https://www.wikiwand.com/en/One-time_password

About

Screen tester

Features
Read full description

Screen Tester is the ultimate local diagnostic utility designed to help you verify the health and functionality of your device's display. Whether you are buying a used phone, checking your device after a drop, or suspecting a display fault, Screen Tester provides the necessary tools to inspect your screen thoroughly and easily. Key Features: Pixel Color Test Identify dead, stuck, or faded pixels effortlessly. The app cycles through pure, high-contrast primary colors (Red, Green, Blue, White, and Yellow) at maximum screen brightness. This allows you to spot any pixel irregularities, LCD bleeding, or OLED burn-in with complete visual clarity. Simply tap the screen to switch between test colors. Touch Digitizer Grid Test Ensure that every part of your touch screen is responsive. The Grid Test overlays a matrix on your screen. By swiping and dragging your finger across the display to fill the grid, you can quickly identify dead zones or ghost touch issues where the digitizer may be failing. Why use Screen Tester? Buying Pre-owned Devices: Quickly launch the app to ensure the screen of the secondhand phone you are buying is in perfect working condition. Post-Repair Verification: Check if your newly replaced screen is fully functional and free of dead pixels or unresponsive touch areas. Routine Device Health Checks: Keep an eye on your display's quality over time. Privacy First Screen Tester is built with your privacy in mind. It is a 100% local diagnostic tool. We do not collect, store, or transmit any personal data, usage statistics, or diagnostic results. The app works entirely offline, ensuring that your data remains securely on your device. Download Screen Tester today and ensure your display is flawless.

Screenshots

OTP4 screens
Screen tester3 screens

Verdict

The call

The clearest difference is price: OTP at Free against Screen tester's $0.99. OTP also leads on device support (4 vs 2) and iOS requirement (9.3 vs 15.6). Screen tester's advantage is in-app purchases (none vs 1). On 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

OTP is free to download; Screen tester costs $0.99 up front. OTP sells 1 one-off in-app purchase. Screen tester asks for nothing beyond the download.

Scorecard4 real differences · 6 level
OTP versus Screen tester: the parameters behind the verdict, then further details
ParameterOTPScreen tester
PriceFree — better$0.99
Rating3.6 (18 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings18 — better—
Update frequencyEvery 6 months—
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPod
Requires iOS9.3 — better15.6
Further details — not scored
Size27 MB6 MB
Age rating4+4+
Developer浩 王Yunus Gunduz

In-app purchases

1 purchases

OTP

One-time1
  • OTPAuth Premium$1.99
None

Screen tester

No in-app purchases

Questions

Is OTP free?
OTP is free to download, with in-app purchases available.
Is Screen tester free?
Screen tester costs $0.99, with no in-app purchases.
Do OTP or Screen tester have ads?
Neither OTP nor Screen tester shows ads.

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