Comparison

Tone Generator vs o46scope

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

Head to head
About

Tone Generator

Features
Read full description

Tone Generator Tone Generator is a versatile audio tool that generates accurate test signals with fully customizable frequency, volume, and panning settings. It is designed for a wide range of applications, including acoustic calibration, audio equipment testing, and ear training. Supported Waveforms - Sine - Triangle - Sawtooth - Square Key Features - Customizable Frequency: Precision control across the audible range (e.g., 20Hz – 20kHz). - Volume Adjustment: Fine-tune the output level. - Panning Control: Adjust the balance between Left (L) and Right (R) channels. - Background Playback: Continues to run even when the app is in the background. - Intuitive UI: A simple, user-friendly interface for seamless operation. Common Use Cases - Speaker & Headphone Testing: Evaluate the performance and range of your hardware. - Hearing Sensitivity Checks: Verify your personal frequency response and hearing range. - Audio Equipment Calibration: Ensure your gear is tuned and balanced correctly. - Education & Training: A perfect tool for acoustic training and general audio education.

About

o46scope

Features
Read full description

o46scope is an audio measurement app for iPhone and iPad that helps you visualize sound in real time. It supports oscilloscope and FFT spectrum display, allowing you to inspect waveforms and frequency components instantly. The app also supports internal signal generation with Tone1 / Tone2 and test signal (Beep) output, making it useful for quick checks, learning, and simple audio measurement tasks. Key features • Oscilloscope display • FFT spectrum display • Signal tab for signal control • Internal signal generation with Tone1 / Tone2 • Speaker output for tones • Test signal (Beep) output • Adjustable parameters Premium Tone1 / Tone2 internal signal generation is available as a premium feature. It is available without ads. Ideal for users who want waveform visualization, frequency analysis, and signal generation in one app. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Tone Generator4 screens
o46scope4 screens

Verdict

The call

The clearest difference is in-app purchases: Tone Generator at none against o46scope's 1. Tone Generator also leads on update cadence (every 2 weeks vs every 6 weeks). o46scope's advantage is ads (none vs shown) and iOS requirement (13.0 vs 17.6). 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. o46scope sells 1 in-app purchase, starting at $19.99 per year. Tone Generator asks for nothing beyond the download.

UpkeepUpdate frequency

Tone Generator ships an update every 2 weeks, o46scope every 6 weeks. The most recent releases landed on September 11, 2026 and September 10, 2026 respectively.

Scorecard4 real differences · 2 level
Tone Generator versus o46scope: the parameters behind the verdict, then further details
ParameterTone Generatoro46scope
PriceFreeFree
Update frequencyEvery 2 weeks — betterEvery 6 weeks
AdsYesNo — better
In-app purchasesNo — betterYes
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.613.0 — better
Further details — not scored
Size5 MB53 MB
Age rating4+4+
DeveloperEiji ChibaShinsuke Tsutsui

In-app purchases

None

Tone Generator

No in-app purchases

1 purchases

o46scope

Subscriptions1
  • Premium7 Days trial$19.991 Year

Questions

Is Tone Generator free?
Tone Generator is free to download, with no in-app purchases.
Is o46scope free?
o46scope is free to download, with in-app purchases available.
Do Tone Generator or o46scope have ads?
Tone Generator shows ads; o46scope does not.
Which is updated more often, Tone Generator or o46scope?
Tone Generator ships an update every 2 weeks, and o46scope every 6 weeks. Most recently, Tone Generator was updated on September 11, 2026 and o46scope on September 10, 2026.

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