Spectre vs Audio Spectrum Analyzer dB RTA
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Spectre
This audio analysis utility provides real-time FFT and oscilloscope views for sound input. Customize waveform display, control sample rates, and zoom in for detailed analysis on iOS devices.
- FFT Analysis
- Oscilloscope
- Customizable Waveform
- Linear & Logarithmic Forms
- Pause/Play Controls
- Zoom Functionality
Read full descriptionHide full description
Spectre is an iOS audio analysis utility designed to be useful and visually appealing, making use of retina displays. Feature Highlights: • FFT(Fast Fourier Transform) Analysis • Oscilloscope • Customizable Features: Wave Amplitude, Sample/Time Control, Line Width • Linear & Logarithmic Wave Forms • Pause/Play Controls • Zoom in/out on the Waveform! • Optimized for iPhone 3,4,5 and iOS 7 Currently this app takes input from standard input, and external mics. Cross-app sound analysis coming soon! Waveform recording also coming soon!
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 Spectre's $0.99. Audio Spectrum Analyzer dB RTA also leads on rating (4.5 vs 3.0) and update cadence (every 5 months vs every 96 months). Spectre's advantage is in-app purchases (none vs 2) and iOS requirement (12.0 vs 15). On review sentiment, 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; Spectre costs $0.99 up front. Audio Spectrum Analyzer dB RTA sells 2 in-app purchases, starting at $1.99 per month. Spectre asks for nothing beyond the download.
Audio Spectrum Analyzer dB RTA holds the better App Store score, 4.5 against 3.0. That said, the two scores are not equally well evidenced: Audio Spectrum Analyzer dB RTA has 3K ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 40% of Spectre's written reviews are positive against 44% of Audio Spectrum Analyzer dB RTA's.
Spectre ships an update every 96 months, Audio Spectrum Analyzer dB RTA every 5 months. The most recent releases landed on November 4, 2026 and November 3, 2026 respectively.
| Parameter | Spectre | Audio Spectrum Analyzer dB RTA |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 3.0 (2 ratings) | 4.5 (3K ratings) — better |
| Positive reviews | 40.0% of reviews | 43.6% of reviews — better |
| Number of ratings | 2 | 3K — better |
| Update frequency | Every 96 months | Every 5 months — better |
| 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 | 12.0 — better | 15 |
| Further details — not scored | ||
| Size | 46 MB | 24 MB |
| Age rating | 4+ | 4+ |
| Developer | Michael Hand | Marina Polyanskaya |
Customer experience
Spectre
Audio Spectrum Analyzer dB RTA
Bugs and requests
Spectre
Not enough reviews yet to summarise bugs or requests.
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
Spectre
No in-app purchases
Audio Spectrum Analyzer dB RTA
- Premium Access3 Days trial$1.991 Month
- Spectrum Analyzer Pro$7.99
Questions
Is Spectre free?
Is Audio Spectrum Analyzer dB RTA free?
Which has better reviews, Spectre or Audio Spectrum Analyzer dB RTA?
Do Spectre or Audio Spectrum Analyzer dB RTA have ads?
Which is updated more often, Spectre or Audio Spectrum Analyzer dB RTA?
Other comparisons
