Frequency Meter PRO vs Audio Spectrum Analyzer dB RTA
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Frequency Meter PRO
Analyze audio frequencies in real-time using your device's microphone. Visualize audio levels, noise, and frequency ranges with a spectrum analyzer and oscilloscope. Export data for further analysis.
- Real-time audio scanning
- Spectrum analyzer visualization
- Frequency oscilloscope
- Adjustable noise threshold
- Customizable frequency range
- Export data to CSV
Read full descriptionHide full description
Frequency Meter PRO is a comprehensive tool for audio frequency diagnostics. Includes REAL TIME scanning of audio signal from internal or external microphone. *** OUTPUT *** Visualization is done on real like device that shows: - Audio level - Noise Level - Frequency range - Current frequency - Frequency oscilloscope - Spectrum analyzer *** ACCURACY *** Application is calibrated with real tone generator. Working range is around 15 - 22500 Hz, and accuracy around +/- 0.5 %. *** NOISE LIMIT *** You can easily set a limit that removes noise treshold with included trackbar. *** RANGE SELECTION *** Choose minimum and maximum frequency you want to scan. *** EXPORT *** You can export output chart to comma-separated file that you can later analyze with MS Excel or other table processor. Application shares document folder in iTunes. *** SUPPORT*** Please don't hesitate to write us for details or questions: lubomir.havran@gmail.com
Audio Spectrum Analyzer dB RTA
Analyze sound frequencies and decibel levels with this advanced tool. Ideal for tuning audio systems, it offers real-time spectrum analysis and sound metering for various applications.
- Octave Band Real-Time Analyzer
- FFT Plot - Fast Fourier Transform
- Integrated Sound Level Meter (dB-A)
- Multispectral Harmonic Analyzer
- Hold Max and Min Peaks
- Various Window Functions
Read full descriptionHide full description
Spectrum Analyzer is full of fantastic advanced features you won’t find elsewhere easily! This app offers a fast and accurate spectrum analysis suitable for both amateur hi-fi enthusiasts and professional A/V engineers. This incredibly precise, pro level tool is perfect for tuning your home cinema, car stereo, subwoofers, and more. Spectrum analyser gives insight into your sounds and deconstructs the audio spectrum, showing the levels of the various frequencies in your audio signal. The built-in sound meter provides high-quality measurement results when measuring ambient noise levels in a multitude of real-life scenarios. Features include- ● Octave Band Real-Time Analyzer ● FFT Plot - Fast Fourier Transform ● Smooth HD Graphics ● Multispectral Harmonic Analyzer ● Integrated Sound Level Meter (dB-A weighted) FFT Features ● FFT size from 256 to incredible 16384 ● Hold Max and (unique feature) Min peaks ● Linear and Logarithm scales ● Various window functions: Rectangle, Hanning, Hamming, Tukey, Cosine, Lanczos, Blackman ● Max frequency live tracking ● Selected frequency live tracking ● Fullscreen mode Octave RTA features ● Bars and unique spline plot modes ● Full, 1/3, 1/6 octave modes ● Hold max mode ● Selected bar tracking. And much more... Please feel free to contact us with any questions, problems or ideas via e-mail support@lspapps.com. Privacy Policy - https://www.iubenda.com/privacy-policy/42622625 Terms of Use https://www.iubenda.com/terms-and-conditions/42622625
Screenshots
Verdict
The clearest difference is price: Audio Spectrum Analyzer dB RTA at Free against Frequency Meter PRO's $2.99. Audio Spectrum Analyzer dB RTA also leads on rating (4.5 vs 1.8) and review sentiment (44% vs 15%). Frequency Meter PRO's advantage is in-app purchases (none vs 2) and iOS requirement (8.0 vs 15). On update cadence, 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
Audio Spectrum Analyzer dB RTA is free to download; Frequency Meter PRO costs $2.99 up front. Audio Spectrum Analyzer dB RTA sells 2 in-app purchases, starting at $1.99 per month. Frequency Meter PRO asks for nothing beyond the download.
Audio Spectrum Analyzer dB RTA holds the better App Store score, 4.5 against 1.8. That said, the two scores are not equally well evidenced: Audio Spectrum Analyzer dB RTA has 3K ratings behind it against 30, so its average is the more settled of the two. Written reviews point the same way: 15% of Frequency Meter PRO's written reviews are positive against 44% of Audio Spectrum Analyzer dB RTA's.
Frequency Meter PRO ships an update every 4 months, Audio Spectrum Analyzer dB RTA every 5 months. The most recent releases landed on September 24, 2026 and September 22, 2026 respectively.
| Parameter | Frequency Meter PRO | Audio Spectrum Analyzer dB RTA |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 1.8 (30 ratings) | 4.5 (3K ratings) — better |
| Positive reviews | 14.7% of reviews | 43.6% of reviews — better |
| Number of ratings | 30 | 3K — better |
| Update frequency | Every 4 months — better | Every 5 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 8.0 — better | 15 |
| Further details — not scored | ||
| Size | 3 MB | 24 MB |
| Age rating | 4+ | 4+ |
| Developer | Lubomir Havran BINARTS | Marina Polyanskaya |
Customer experience
Frequency Meter PRO
Audio Spectrum Analyzer dB RTA
User reviews
Frequency Meter PRO
From 30 App Store ratingsWhat we love
- ✨ Identifies frequency quickly
- 💡 Can filter sound frequencies
- 💡 Detects harmonics
- 💡 Useful for ultrasonic devices
- 💡 Can be used to tune instruments
Room to improve
- ❌ Inaccurate readings
- ❌ Not a reliable frequency meter
- ❌ Fake, toy, not a frequency meter
- ❌ Useless for tuning
- ❌ Waste of money
Audio Spectrum Analyzer dB RTA
From 3K App Store ratingsWhat we love
- 🚀 Excellent audio analysis tool
- 👍 Clean and intuitive interface
- 💡 Customizable frequency range
- 🔍 Accurate real-time spectrum visualization
Room to improve
- 🐛 Compatibility issues with newer iOS versions
- 🔁 Constant prompts to upgrade to Pro version
- 🔌 High battery consumption
- 📊 Inaccurate frequency tracking in some modes
Bugs and requests
Frequency Meter PRO
Reported bugs
25 issues- Sticks on a reading
- Below C4 indicates wrong notes
- Frequency range indicated when NOISE indicator is ON
- Fails to change output when tone changes
- Works only if shut down and restarted
Show 20 moreShow fewer
- App crashes on open
- App worked only once, now nothing happens
- Crashes ever since the update
- Crashing at the push of a button
- Meter freezes
- Locks up after 3-5 seconds
- Buttons don't work
- App closes when buttons are pressed
- Cannot download
- Ne fonctionne pas sur iPad mini, pas d accès au micro
- Threshold sliders don't work as expected
- App doesn't read frequency and gives out odd numbers
- Barely works
- Crashes frequently
- Doesn't work on anything but a pure sine wave
- Fails to work on current iOS version
- Freezes every time I use it
- Does not work at all
- Random numbers displayed
- Sometimes determines frequency well, other times completely wrong
Requested features
15 requests- Include a short/simple manual
- Explain how to find CSV file in iTunes
- Update with accuracy fix
- Allow measurement of frequencies above 20kHz
- Add help function for operation
Show 10 moreShow fewer
- Improve display readability
- Add option to filter background noise
- Allow selection of recording intervals
- Add real-time display of all main frequencies
- Allow filtering of frequencies in a certain range
- Include instructions in updates
- Increase size of data presentation screen
- Support for iPhone 5 resolution
- More control over frequency filtering
- Dark mode option
Audio Spectrum Analyzer dB RTA
Reported bugs
3 issues- Freezing and crashing on certain devices
- Incorrect frequency readings in Octave RTA mode
- Inability to switch between microphone sources
Requested features
4 requests- External microphone support
- Ability to save and compare measurement results
- More detailed instructions and tutorials
- Vertical orientation option
In-app purchases
Frequency Meter PRO
No in-app purchases
Audio Spectrum Analyzer dB RTA
- Premium Access3 Days trial$1.991 Month
- Spectrum Analyzer Pro$7.99
Questions
Is Frequency Meter PRO free?
Is Audio Spectrum Analyzer dB RTA free?
Which has better reviews, Frequency Meter PRO or Audio Spectrum Analyzer dB RTA?
Do Frequency Meter PRO or Audio Spectrum Analyzer dB RTA have ads?
Which is updated more often, Frequency Meter PRO or Audio Spectrum Analyzer dB RTA?
Other comparisons















