A Comprehensive Overview of Sonify (2026)
Sonify is a data sonification company that turns datasets into sound and music through TwoTone, its free open-source web app. Explore features, alternatives, and beginner guides for data-driven audio in 2026.
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Sonify is a data sonification company founded in 2019, originally based in New York City and now headquartered in Vermont. The company specializes in converting data into sound and music, combining data sonification, sound design, interaction design, spatial audio, VR/AR, AI, and voice technologies to build audio-first solutions for human-computer interaction.
Sonify's flagship product is TwoTone (twotone.io), a free and open-source web app built with support from the Google News Initiative. TwoTone lets anyone turn spreadsheet data into music without writing code or having any musical training. Simply upload a CSV or Excel file, and the app automatically generates an audio track mapped to your data columns.
All data uploaded to TwoTone is processed entirely in the browser -- there are no server-side operations or storage. This makes it a privacy-friendly choice for sensitive datasets. The app supports export to MP3, WAV, and live MIDI output across 16 channels.
Beyond TwoTone, Sonify provides professional consulting services including training, production, and R&D for organizations looking to integrate sonification into their products, journalism, research, or accessibility initiatives. The company offers discounts for educational institutions, researchers, and students.
Best Sonify Alternatives
If you need different approaches to data sonification or audio-driven content creation, here are the top alternatives to Sonify and TwoTone in 2026:
NemoVideo is an AI-powered video editing platform with built-in SmartAudio capabilities. Its agentic workflow lets you create professional video and audio content by simply describing what you want -- ideal for turning data stories into engaging video presentations.
A web app co-created by Georgia Tech and Highcharts, designed to make data sonification accessible to a wide range of users. It focuses on accessibility and integrates with the Highcharts charting library for combined visual and auditory data exploration.
An open-source Python package designed to sonify data series by mapping one axis to time and another to pitch. Originally built for astronomical data, Astronify works with any time-series dataset and is ideal for developers comfortable with Python.
A free, open-source visual programming environment for audio processing. While not built specifically for data sonification, Pure Data offers powerful flexibility for creating custom sonification pipelines and real-time audio manipulation.
Pricing of Sonify
Sonify's main product, TwoTone, is completely free and open source. The company also provides professional consulting services for custom sonification projects, which are priced on a per-project basis. Here is how Sonify compares to alternatives:
| Tool | Price | Key Features |
|---|---|---|
| Sonify (TwoTone) | Free (open source) | No-code data sonification, MP3/WAV/MIDI export, browser-based |
| Sonify Consulting | Custom pricing | Training, R&D, custom sonification production, educational discounts |
| NemoVideo | Free / Premium | AI-powered video editing, agentic workflow, SmartAudio, smart captions |
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Does Sonify Have a Free Version?
Yes -- Sonify's TwoTone is entirely free and open source. There is no paid tier, no usage limits, and no account required. You can access TwoTone at twotone.io and start converting data into music immediately. The app runs 100% in your web browser, so there is nothing to download or install.
Because TwoTone processes all data client-side in the browser, there are no server costs involved, which is why the tool can remain completely free. The source code is available on GitHub under the Sonify Data organization, so developers can also fork and customize it for their own projects.
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How to Use Sonify for Beginners
Getting started with Sonify's TwoTone requires no account, no download, and no musical or programming knowledge. Here is a step-by-step guide:
Step 1: Open TwoTone and Upload Data
Go to twotone.io in any modern web browser. Click the upload button and select a CSV or Excel spreadsheet containing the data you want to sonify. TwoTone accepts most tabular data formats with numeric columns.
Step 2: Customize Your Sonification
TwoTone automatically creates an audio track from one column of your data, mapping values to musical pitch. You can change the instrument (piano, strings, synth, etc.), select a different data column, adjust the pitch range, and modify the tempo. Add multiple tracks to layer different data columns as separate instruments.
Step 3: Export Your Composition
Once you are happy with how your data sounds, export the composition as an MP3 or WAV file with your choice of bit rate. For professional use, TwoTone also supports live MIDI output across 16 channels, letting you route data-driven notes into any DAW or synthesizer.
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Best Data Sonification Tools in 2026
The data sonification landscape in 2026 offers a growing range of tools for researchers, journalists, educators, and creators. Here are standout platforms to consider:
- Sonify (TwoTone) -- Free, open-source, no-code web app for turning spreadsheets into music. Best for beginners and non-technical users who want quick results
- Highcharts Sonification Studio -- Accessible web app with tight integration into the Highcharts ecosystem. Ideal for combining visual charts with auditory data exploration
- Astronify -- Open-source Python package for sonifying time-series data. Best for developers and researchers working in Python environments
- Pure Data -- Free visual programming language for audio. Offers maximum flexibility for custom sonification but has a steeper learning curve
- NemoVideo -- AI-powered agentic video editing with SmartAudio, perfect for turning data narratives into professional video presentations
Does Sonify Have an API?
Sonify's TwoTone is fully open source on GitHub (github.com/sonifydata/twotone), so developers can fork the codebase and integrate its sonification engine into their own applications. While Sonify does not offer a traditional REST API, the open-source nature of TwoTone makes it highly customizable for developer workflows.
For programmatic data sonification, several complementary tools are available: the R package "sonify" transforms univariate data into continuous sound with time-varying frequency, and Python libraries like Astronify provide similar capabilities for time-series data. Sonify also integrates with common data analysis environments through connections for Python, R, Excel, and several BI platforms, making it possible to embed sonification into existing data pipelines.