Comparison

RTA Pro vs UniKey

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

Head to head
About

RTA Pro

Transform your iOS device into a professional audio analysis tool. Analyze ambient noise frequencies, pinpoint room resonance, and set up sound systems for events. Features include custom calibration, multiple display modes, and adjustable speed settings.

Highlights
  • Real-time audio spectrum analysis
  • Frequency range 32Hz to 16kHz
  • Linear, dB(A), and dB(C) weightings
  • 1/3 Octave Bands, Octave Bands, and FFT display
  • Adjustable speed settings
  • Custom calibration options
Read full description

RTA Pro is a real time audio spektrum analyzer. It turns your iOS device into a powerful audio test system usually seen only in audio research laboratories and music studios. Such instruments are used to analyze the frequency spectrum of ambient noise, e.g. to be able to pinpoint frequencies which cause rumble in a room. Another use is the level setting setting of PA systems for concerts. Features: RTA Pro requires iOS11 or later and has been calibrated for the microphones of most iPhones. Custom calibration is also possible. The frequency range is 32Hz to 16kHz. Linear display, as well as weightings for measuring dB(A) and dB(C) is provided. Apart from 1/3 Octave Bands and Octave Bands, RTA Pro also features the display of a Fast Fourier Transform (FFT). The speed is adjustable to impulse, 128ms and 1 second.

About

UniKey

Features
Read full description

UniKey: Your Secure, Deterministic Password Manager UniKey is a powerful password manager that generates unique passwords for all your accounts without storing them. Using secure algorithms, UniKey creates strong passwords deterministically from your master password and login information — no cloud sync needed, passwords are always available when you authenticate. - How It Works UniKey combines your master password with login item details (name, optional email/username, and optional phrase) to generate unique passwords using secure algorithms. The same inputs always produce the same password, so you can regenerate any password anytime, anywhere. Your master password is the only secret you need to remember. - Key Features • Deterministic Password Generation: Generate unique, strong passwords on demand. No password storage needed — passwords regenerate instantly when you authenticate. • Master Password Protection: Stored securely backed by platform-specific secure storage. • Biometric Authentication: Unlock quickly with biometrics. Biometric-protected storage ensures your master password is only accessible after successful authentication. • Organize with Groups: Organize login items into custom groups. Switch between groups easily and keep accounts organized by category or service type. • Customizable Password Options: Configure default settings including length, character types, minimum requirements, and ambiguous character avoidance. Each login item can have custom options. • Password Phrases: Add optional phrases to generate different passwords when needed — perfect when a site's password was compromised. • Secure by Design: Rate limiting prevents brute force attacks. Inactivity timeout automatically locks the app. Time tampering detection and constant-time password comparison prevent security bypasses. • Privacy First: All password generation happens locally. No passwords are transmitted over the network. Only login item metadata (names, groups, settings) sync — actual passwords never transmitted. • Easy to Use: Simple interface to add, edit, and manage login items. Copy passwords with one tap, toggle visibility, and organize with groups. - Perfect For • Users who want strong, unique passwords without managing a password vault • People who need access across devices without internet connectivity • Security-conscious users who prefer deterministic generation over cloud storage • Anyone wanting password manager convenience with local-only generation - Getting Started 1. Set your master password when you first launch 2. Add login items for each account or service 3. Optionally customize password options per item 4. Copy generated passwords when needed 5. Organize items into groups - Security Notes • Never share your master password • If you forget your master password, you lose access to all generated passwords • Use biometric authentication for added security and convenience • App automatically locks after inactivity • Failed attempts are rate-limited to prevent brute force attacks - iCloud Sync Enable iCloud sync in Settings to backup login items to iCloud Drive. - Privacy & Data UniKey is designed with privacy in mind. Password generation happens locally. Login item metadata may sync via iCloud, but master password and generated passwords are never stored in the cloud or transmitted.

Screenshots

RTA Pro4 screens
UniKey4 screens

Verdict

The call

The clearest difference is price: UniKey at Free against RTA Pro's $5.99. UniKey also leads on iOS requirement (15.6 vs 17.6). RTA Pro's advantage is ads (none vs shown). On update cadence, 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

UniKey is free to download; RTA Pro costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

RTA Pro ships an update every 3 months, UniKey every 4 months. The most recent releases landed on November 6, 2026 and October 28, 2026 respectively.

Scorecard3 real differences · 7 level
RTA Pro versus UniKey: the parameters behind the verdict, then further details
ParameterRTA ProUniKey
Price$5.99Free — better
Rating4.5 (2 ratings) — better—
Positive reviews50.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 3 months — betterEvery 4 months
AdsNo — betterYes
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.615.6 — better
Further details — not scored
Size12 MB41 MB
Age rating4+4+
DeveloperMatthias SchorerDONALD PAUL FULDAUER JR

In-app purchases

None

RTA Pro

No in-app purchases

None

UniKey

No in-app purchases

Questions

Is RTA Pro free?
RTA Pro costs $5.99, with no in-app purchases.
Is UniKey free?
UniKey is free to download, with no in-app purchases.
Do RTA Pro or UniKey have ads?
UniKey shows ads; RTA Pro does not.
Which is updated more often, RTA Pro or UniKey?
RTA Pro ships an update every 3 months, and UniKey every 4 months. Most recently, RTA Pro was updated on November 6, 2026 and UniKey on October 28, 2026.

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