Comparison

On Stage Studio vs Spectrum Analyzer

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

Head to head
About

On Stage Studio

Features
Read full description

On Stage Stdio Limited擁有專業的海報製作團隊,助您輕鬆打造出獨具風格的海報作品。無論您是需要製作宣傳活動、推廣產品,還是舉辦特殊場合,On Stage Stdio Limited都能滿足您的需求。

About

Spectrum Analyzer

Visualize sound frequencies, waveforms, and spectral activity in real-time using your device's microphone. Analyze audio for tuning, testing, music, or exploring ambient sounds with clear visual representations.

Highlights
  • Real-time audio spectrum analysis
  • FFT frequency analysis
  • Live spectrogram visualization
  • Audio waveform display
  • Frequency and amplitude monitoring
  • Microphone-based sound analysis
Features
Read full description

See sound in real time with Spectrum Analyzer: Audio RTA, a powerful audio analysis tool for visualizing frequencies, waveforms and spectral activity through your device’s microphone. Whether you are tuning speakers, examining music, testing audio equipment, identifying troublesome frequencies or simply exploring the sounds around you, the app gives you a clear and responsive view of your audio signal. REAL-TIME AUDIO SPECTRUM ANALYSIS View the frequency content of live sound as it happens. The spectrum analyzer separates the incoming audio into frequency components, making it easier to identify peaks, harmonics, resonance and changes across the sound spectrum. FFT FREQUENCY ANALYZER Use Fast Fourier Transform analysis to examine the frequencies present in music, speech, instruments, speakers and environmental sound. Follow frequency peaks and observe how the signal changes over time. LIVE SPECTROGRAM Turn sound into an easy-to-read visual frequency map. The spectrogram displays how frequency intensity develops over time, helping you recognize tones, harmonics, patterns and transient sounds. AUDIO WAVEFORM DISPLAY Watch the shape and amplitude of the microphone signal in real time. The waveform view provides a direct visual representation of changes in volume and signal behaviour. RTA FOR AUDIO TESTING Use your iPhone or iPad as a convenient real-time analyzer for: • Speaker and stereo testing • Room and acoustic checks • Music and instrument analysis • Identifying frequency peaks • Monitoring background noise • Examining voices and sound effects • Audio equipment testing • Learning about sound and frequencies UNDERSTAND THE SOUNDS AROUND YOU Spectrum Analyzer: Audio RTA helps reveal details that are difficult to recognize by listening alone. Observe low, mid and high frequencies, compare different sounds and discover how every audio source creates its own spectral pattern. DESIGNED FOR QUICK, CLEAR ANALYSIS The responsive interface makes it easy to move between audio analysis views and focus on the information you need. Use it for technical checks, music production, education, acoustic experiments or everyday sound exploration. KEY FEATURES • Real-time audio spectrum analyzer • FFT frequency analysis • Live spectrogram visualization • Audio waveform display • Frequency and amplitude monitoring • Microphone-based sound analysis • Clear visual representation of audio signals • Support for both portrait and landscape use • Useful for speakers, music, voices and environmental noise From simple sound experiments to detailed frequency inspection, Spectrum Analyzer: Audio RTA puts a capable audio visualization tool in your pocket. Download the app and start seeing the frequencies hidden inside every sound. Privacy Policy: https://www.devtreelabs.com/privacy Terms of Use. https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

On Stage Studio4 screens
Spectrum Analyzer4 screens

Verdict

The call

The clearest difference is in-app purchases: On Stage Studio at none against Spectrum Analyzer's 2. On Stage Studio also leads on iOS requirement (13.4 vs 17.6). Spectrum Analyzer's advantage is ads (none vs shown) and update cadence (monthly vs every 3 months). On price 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

Both are free to download. Spectrum Analyzer sells 2 in-app purchases, starting at $4.99 per 7 days. On Stage Studio asks for nothing beyond the download.

UpkeepUpdate frequency

On Stage Studio ships an update every 3 months, Spectrum Analyzer monthly. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

Scorecard4 real differences · 5 level
On Stage Studio versus Spectrum Analyzer: the parameters behind the verdict, then further details
ParameterOn Stage StudioSpectrum Analyzer
PriceFreeFree
Rating—3.0 (2 ratings) — better
Number of ratings—2 — better
Update frequencyEvery 3 monthsMonthly — better
AdsYesNo — better
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPodiPhone, iPad
Requires iOS13.4 — better17.6
Further details — not scored
Size36 MB21 MB
Age rating4+4+
DeveloperHoi Fan Soongbrian koech

In-app purchases

None

On Stage Studio

No in-app purchases

2 purchases

Spectrum Analyzer

Subscriptions2
  • pro weekly3 Days trial$4.997 Days
  • pro annual$29.991 Year

Questions

Is On Stage Studio free?
On Stage Studio is free to download, with no in-app purchases.
Is Spectrum Analyzer free?
Spectrum Analyzer is free to download, with in-app purchases available.
Do On Stage Studio or Spectrum Analyzer have ads?
On Stage Studio shows ads; Spectrum Analyzer does not.
Which is updated more often, On Stage Studio or Spectrum Analyzer?
On Stage Studio ships an update every 3 months, and Spectrum Analyzer monthly. Most recently, On Stage Studio was updated on October 30, 2026 and Spectrum Analyzer on October 31, 2026.

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