Octave RTA
by ONYX Apps
- Music
- Paid
- Zombie
- Rating
- 4.4
- 154 ratings · US storefront
- Top 88%among 120 Music apps
- Last update
- Nov 19, 2018
- Version 1.2.5
- Size
- 7 MB
- Category
- Music
- Tracked since
- Oct 10, 2026
Estimated revenue
A model estimate with a likely range, not a reported figure.
No estimate. Apps outside the grossing charts, and some countries, have no reliable rank-to-revenue curve, so we show nothing rather than a guess.
How this estimate is made
Rank: we take the app's best Top Grossing rank on the latest chart day. Category ranks are converted into an equivalent overall rank, because a #10 in Finance earns far less than a #10 overall.
Curve: that equivalent rank is read off a rank-to-revenue curve anchored on public company revenue and market-data reports for the US iPhone App Store.
Country: the curve is scaled per country (Japan is roughly a third of the US, Türkiye under 1%). Where we have no scale, such as China, there is no estimate.
Range: the likely range widens with country, category and chart depth. It is a plausible span, not a statistical confidence interval.
Not included: ads, payments outside the App Store, and any difference between gross sales and what the developer keeps. Low confidence means indirect data; medium means several independent sources agree.
Full methodScreenshots
As shown on the App Store listing.
About this app
Text from the App Store listing.
* "I use this app when sound checking, does the job, nice & simple to use, can't fault it." - Colin Challinor
Octave RTA is a powerful real-time audio analysis app. Designed with musicians and recording engineers in mind, it can also be used by anyone interested in the world of sound. Ideal for room tuning or speaker tuning, the app enables portable, precision audio measurement and visualization.
Feature Highlights:
- Full, 1/3 and 1/6 Octave
- FFT Size (2048 to 16384 points)
- Fast, Slow (exponential) and Infinite Averaging
- Toggle between Flat, A and C weighted modes
- Snapshot overlay for quick comparison
- Lock mode to auto track peak band
- Pan to adjust visible dB range
- iPhone X ready
Audio credits: "Basement Floor" and "Enchanted Journey" by Kevin MacLeod
What’s new
Release notes for the latest version, as written by the developer.
Thank you for helping us improve Octave RTA app! Please rate it on the App Store now, so we can make it even better!
- Toggle between Flat, A and C weighted modes
- Snapshot overlay for quick comparison (RTA module)
Rank history
Daily position in the Bolivia charts. #1 is at the top.
- Best rank
- #1
- Current rank
- #1
- Days charting
- 7 of 7
On the charts today
Small & simple score
How realistic it is for a small team to build something like this.
75/100
Not flagged as small & simple
- Developer size0% · 25
Developer: 9 apps on the charts
- Audience size100% · 20
Ratings: 154
- App size100% · 10
Size: 7 MB
- Price model100% · 15
Price model: paid
- Demand proof100% · 30
Best rank #1, 45 countries
An indicator, not a fact. We can't see team size. Calculated Oct 24, 2026 · method i2
How the score worksVersion history
- 1.2.5LatestReleased Nov 19, 2018