RTA Pro vs PowerVision 4
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.
PowerVision 4
Control your motorcycle's engine performance directly from your iPhone. Access hundreds of pre-loaded engine tunes or create custom ones. Easily flash tunes to your bike's ECU, monitor real-time engine data, and manage diagnostic trouble codes.
- Flash tunes to ECU
- Access vast tune database
- Record real-time engine data
- Read/clear diagnostic codes
- Remote tuning optimization
- Autotune modes
- Active tests for diagnostics
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Power Vision 4 from Dynojet Research Inc. combined with your iPhone puts you in control of your bike’s engine. Gain access to hundreds of different tunes for various aftermarket components and easily flash any of them to you bike’s ECU. Unbelievably quick and easy to use; make more power and torque with the push of a button. Advanced users can edit hundreds of individual engine parameters to build a tune that’s dialed in for their unique setup using Dynojet’s integrated cloud tune delivery system. With the PV4 App and our pocket-sized PV4 device you can: • Flash tunes to your ECU – no setup required, just create an account, select your tune, flash, and ride the ultimate ride. • Access to vast database of pre-loaded tunes for different configurations – no custom tuning required. • Easily download and manage pre-loaded and custom tunes. • Record real-time engine data and review in WinPEP 8 Data Center. • Read, review, clear, and share diagnostic trouble codes (DTC’s) with built-in descriptions. • Flash an unlimited number of bikes with one device.* • Use licenses from your Power Vision Classic with your Power Vision 4. • Return to stock at any time – your original, factory tune is safely backed up on the cloud and on your phone. • Optimized for remote-tuning. – Easily ride, record, and share data logs with your tuner for trouble-free custom tuning without a dynamometer. • Keep your ECU – The Power Vision 4 reprograms your bike without having to remove or mail-in the ECU. Just plug into the diagnostic connector and flash, it’s really that easy. • Autotune - Choose from three different Autotune modes to dial your HD motorcycle in the way that fits you best. • Dynamometer Compatible - Plug your PV4 directly into your Dynojet Dynamometer to view channels, flash, read diagnostic information, read RPM via OBD, and load control without an inductive pickup. • Flashes on HD motorcycles as fast as 12.75 seconds (select models) • Active Tests help diagnose problems on your HD - cycle the fuel pump, indicators, water pump, and many other components when troubleshooting engine or electrical issues. • Diagnostic Routines allow you to bleed the ABS system at home World class, US-based customer service from our team of motorcycle enthusiasts is also available to suggest the best tune, review data recordings, or assist in troubleshooting. Your ultimate ride awaits with Power Vision 4 – download the app and see how easy tuning can be! * First bike license included with purchase of Power Vision 4 device. Requires purchase of license for each additional bike DISCLAIMER: Not legal for sale or use in California
Screenshots
Verdict
The clearest difference is price: PowerVision 4 at Free against RTA Pro's $5.99. PowerVision 4 also leads on review sentiment (78% vs 50%) and rating (4.9 vs 4.5). RTA Pro's advantage is in-app purchases (none vs 8). On ads 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
PowerVision 4 is free to download; RTA Pro costs $5.99 up front. PowerVision 4 sells 8 one-off in-app purchases. RTA Pro asks for nothing beyond the download.
PowerVision 4 holds the better App Store score, 4.9 against 4.5. That said, the two scores are not equally well evidenced: PowerVision 4 has 312 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 50% of RTA Pro's written reviews are positive against 78% of PowerVision 4's.
RTA Pro ships an update every 3 months, PowerVision 4 monthly. The most recent releases landed on November 1, 2026 and October 25, 2026 respectively.
| Parameter | RTA Pro | PowerVision 4 |
|---|---|---|
| Price | $5.99 | Free — better |
| Rating | 4.5 (2 ratings) | 4.9 (312 ratings) — better |
| Positive reviews | 50.0% of reviews | 77.9% of reviews — better |
| Number of ratings | 2 | 312 — better |
| Update frequency | Every 3 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 12 MB | 104 MB |
| Age rating | 4+ | 4+ |
| Developer | Matthias Schorer | Dynojet |
Customer experience
RTA Pro
PowerVision 4
Bugs and requests
RTA Pro
Not enough reviews yet to summarise bugs or requests.
PowerVision 4
Reported bugs
4 issues- App crashes when using diagnostic functions
- Bluetooth disconnects during tuning process
- Sensor readings not updating correctly
- Tune flashing fails intermittently
Requested features
5 requests- Add more pre-loaded tune options
- Implement an auto-tune feature
- Improve data logging and cloud integration
- Expand support for wider range of bikes
- Enhance live sensor data display
In-app purchases
RTA Pro
No in-app purchases
PowerVision 4
- Universal Token$10.00
- Universal Token (3x)$30.00
- Universal Token (5x)$50.00
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- Universal Token (10x)$100.00
- Universal Token (15x)$150.00
- Universal Token (20x)$200.00
- Universal Token (25x)$250.00
- Universal Token (30x)$300.00
Questions
Is RTA Pro free?
Is PowerVision 4 free?
Which has better reviews, RTA Pro or PowerVision 4?
Do RTA Pro or PowerVision 4 have ads?
Which is updated more often, RTA Pro or PowerVision 4?
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