231+ iOS apps curated and reviewed
The best octave apps on iPhone average 4.2★ across 231+ titles — we've ranked them by what real users actually keep on their phones. Updated July 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | — | No | No | May 2026 |
| 2 |  | Free | 3.6★ (15) | Yes | Yes | Aug 2026 |
| 3 |  | Free | — | No | No | May 2026 |
| 4 |  | Free | 4.6★ (37) | No | Yes | Jul 2026 |
| 5 |  | Free | 4.5★ (10K) | Yes | No | Aug 2026 |
| 6 |  | Free | 3.9★ (247) | Yes | No | Jul 2026 |
| 7 |  | $9.99 | 4.4★ (150) | No | No | Jun 2026 |
| 8 |  | Free | — | No | No | May 2026 |
Write and execute MATLAB and Octave code directly on your mobile device. Ideal for learning and testing code snippets with a custom keyboard and advanced editor. Supports plotting and graphing with detailed error output.
Create and manage Octave projects on your iOS device. Generate results and plots using an online editor. Offers local and cloud modes with features like syntax highlighting and Git integration.
This app provides highly accurate tuning for a vast array of musical instruments, from guitars and violins to pianos and flutes. It features a chromatic tuner, transpose mode, and a tone generator for comprehensive musical practice and performance needs.
This utility app provides accurate tuning notes for the cello, covering the standard C, G, D, and A strings. It's designed to help musicians quickly and easily achieve the correct pitch for their instrument.
This real-time audio analysis app provides precision measurement and visualization for sound. It's designed for musicians and recording engineers, but useful for anyone interested in sound, especially for room or speaker tuning.
This application analyzes audio input from your microphone, displaying both the waveform and amplitude spectrum in real-time. It offers extensive customization for display, calculation, and signal generation.
Learn to read sheet music, compose, or improvise with this utility. It helps identify notes on ledger lines and provides chord lookups to improve your musical skills.
This app helps you tune various string instruments, learn songs with interactive tutorials and personalized feedback, and access a vast library of chords and tabs. It also includes practice tools like a metronome and chord games.
Analyze sound frequencies in real-time with this powerful tool. It offers detailed octave band analysis, FFT plots, and various measurement scales. Supports multiple microphones and noise analysis features for accurate audio insights.
This mobile application serves as a digital portal for investors to access their investment information. It provides a convenient way for shareholders to stay updated on their portfolios and company communications.
This app simplifies family organization by consolidating calendars, task management, and meal planning into one place. It offers features like shared calendars, custom lists, and recipe books, with premium options for advanced functionality and unlimited use.
This app provides a free chromatic tuner for guitar, bass, and ukulele. It offers easy-to-follow instructions for beginners and accurate tuning for professionals. Unlock additional tunings and access a vast chord library for enhanced practice.
This app provides a MATLAB interpreter for iOS devices, allowing users to run code and create interactive plots entirely on-device. It's ideal for students and learners who need a functional MATLAB environment without cloud reliance.
This app provides real-time audio analysis for room and speaker tuning. It offers precision measurement and visualization of sound frequencies, suitable for both enthusiasts and professionals. Advanced features are included for accurate spectrum analysis.
Access MATLAB commands, create and edit files, and visualize data from your mobile device. Connect to the cloud for expanded storage and access to add-on products. Acquire data from sensors and your camera for real-time analysis.
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.
Transform your device into a professional sound level meter and audio analyzer. Measure ambient noise, monitor decibel levels, and visualize sound frequencies in real time. It also offers advanced sleep tracking with sound recognition to identify disruptions.