o46scope vs Theia OLED Viewer
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
o46scope
Read full descriptionHide 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 β’ Oscilloscope display β’ FFT spectrum display β’ Signal tab for signal control β’ Internal signal generation with Tone1 / Tone2 β’ Speaker output for tones β’ Test signal (Beep) output β’ 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/
Theia OLED Viewer
Read full descriptionHide full description
Theia transforms your device into a stylish, real-time status display. Designed with a blend of modern UI polish and classic LCD aesthetics, Theia gives you a clear, customizable window into your systemβs current state. Choose from multiple display modes, enable glow or scanline effects, and apply dynamic themes ranging from minimalist to vibrant. Parallax motion, smooth animations, and refined typography create a unique visual experience that feels both retro and modern. Whether you prefer a clean textual readout or a bold pixel-grid style, Theia adapts to your taste with simple, intuitive controls. Features include: β’ Live status updates with smooth rendering β’ Customizable themes with unique background effects β’ Multiple display modes, including clean, dot-matrix, pixel-grid, and more β’ Optional glow and scanline effects β’ Parallax motion for depth and dimensionality β’ Optimized layouts for iPhone and iPad β’ Lightweight, responsive design Theia brings a distinctive, elegant way to visualize real-time information β wherever you need it. Requires a Theia module to display LCD data.
Screenshots
Verdict
The clearest difference is in-app purchases: Theia OLED Viewer at none against o46scope's 1. Theia OLED Viewer also leads on update cadence (every 3 days vs every 6 weeks). o46scope's advantage is iOS requirement (13.0 vs 17.6). On price, ads and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. o46scope sells 1 in-app purchase, starting at $19.99 per year. Theia OLED Viewer asks for nothing beyond the download.
o46scope ships an update every 6 weeks, Theia OLED Viewer every 3 days. The most recent releases landed on September 28, 2026 and October 14, 2026 respectively.
| Parameter | o46scope | Theia OLED Viewer |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 6 weeks | Every 3 days β better |
| Ads | No | No |
| In-app purchases | Yes | No β better |
| Devices | iPhone, iPad, iPod β better | iPhone, iPad |
| Requires iOS | 13.0 β better | 17.6 |
| Further details β not scored | ||
| Size | 53 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | Shinsuke Tsutsui | Patrick Foley |
In-app purchases
o46scope
- Premium7 Days trial$19.991 Year
Theia OLED Viewer
No in-app purchases









