RTA Pro vs Word Filter X
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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.
Word Filter X
This utility app allows users to block and replace specific words on Safari websites to create a more pleasant browsing experience. It offers iCloud synchronization for settings, customizable blocking and replacement options, and supports multiple languages. The application is also available on macOS.
- Block and replace words on Safari
- iCloud synchronization of settings
- Customizable word blocking and replacement
- Share settings via JSON
- Supports English, French, and Japanese
- Available on macOS
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Word Filter X is an application that hides words you don't like on Safari websites. By hiding words, you can calm yourself. This application is a derivative version of the browser extension and iOS application "Hiyoko Filter" with the following features added. 1.iCloud synchronization is supported, allowing you to synchronize settings such as words to be blocked and sites not to be filtered. 2. Configurable which words to block, which words to replace, and which text color to display. 3. Settings can be shared via json files. 4.Support for English and French as well as Japanese. 5.Supports macOS version as well. "Hiyoko Filter" is the name of an iOS application provided by bondavi Inc. The code of this app is used based on the agreement with bondavi inc.
Screenshots
Verdict
The clearest difference is review sentiment: RTA Pro at 50% against Word Filter X's 0%. RTA Pro also leads on rating (4.5 vs 2.5). Word Filter X's advantage is price ($2.99 vs $5.99) and update cadence (every 5 weeks vs every 3 months). On ratings volume, ads, in-app purchases and monetization model 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
RTA Pro costs $5.99 and Word Filter X $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
RTA Pro holds the better App Store score, 4.5 against 2.5. Both are backed by a comparable volume of ratings — 2 and 2 respectively. Written reviews point the same way: 50% of RTA Pro's written reviews are positive against 0% of Word Filter X's.
RTA Pro ships an update every 3 months, Word Filter X every 5 weeks. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.
| Parameter | RTA Pro | Word Filter X |
|---|---|---|
| Price | $5.99 | $2.99 — better |
| Rating | 4.5 (2 ratings) — better | 2.5 (2 ratings) |
| Positive reviews | 50.0% of reviews — better | 0.0% of reviews |
| Number of ratings | 2 | 2 |
| Update frequency | Every 3 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad | iPhone, iPad, Mac, Vision Pro — better |
| Requires iOS | 17.6 | 17.0 — better |
| Further details — not scored | ||
| Size | 12 MB | 21 MB |
| Age rating | 4+ | 4+ |
| Developer | Matthias Schorer | Keisuke Chinone |
Customer experience
RTA Pro
Word Filter X
In-app purchases
RTA Pro
No in-app purchases
Word Filter X
No in-app purchases
Questions
Is RTA Pro free?
Is Word Filter X free?
Which has better reviews, RTA Pro or Word Filter X?
Do RTA Pro or Word Filter X have ads?
Which is updated more often, RTA Pro or Word Filter X?
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