What is Applio?
Applio is an open-source AI voice conversion suite distributed under the MIT license. It runs as a standalone desktop app on Windows, macOS and Linux, or as the classic Gradio WebUI, and the site also mentions a cloud option. You pick a community-shared voice model or train your own from a dataset of audio, then convert songs, speech or microphone input into that voice.
In practice you can make AI covers, convert existing audio files in batch with pitch tuning, cleaning and upscaling, and change your voice live with low-latency inference for streams or calls. Other tools include Voice Blender for mixing several voice models into one, Text-to-Speech that runs generated speech through a voice model, and an Audio Analyzer that checks dataset readiness before training.
Key features
- Voice conversion of audio files with ready-made voice models
- Real-time voice changing with low-latency inference
- Custom voice model training from your own dataset
- Voice Blender for mixing multiple voice models
- Text-to-speech output run through voice models
- Audio Analyzer for dataset health checks before training
Who is it for
- Music creators making AI covers
- Streamers and people using voice changers in calls
- Audio engineers training custom voice models
- Hobbyists new to voice conversion
Pros and cons
- Free and open source under the MIT license
- Runs locally with no accounts, paywalls or telemetry, according to the site
- No limitations listed by the vendor.
Applio pricing
The vendor does not publish prices in a readable form (often pricing is shown only after signing in).
Is Applio free?
Yes, there is a free plan. Entire tool is free; no paid plans are listed on the page.
Applio alternatives
| Tool | Price from | Free plan | Category |
|---|---|---|---|
 ElevenLabs | 6 USD/mo | yes | Voice & text to speech |
 Respeecher | not listed | trial | Voice & text to speech |
 Splice | 4.99 USD/mo | trial | Voice & text to speech |
 Voice.ai | 5 USD/mo | yes | Voice & text to speech |
 Fish Audio | not listed | yes | Voice & text to speech |
 Speechify | 29 USD/mo | yes | Voice & text to speech |
FAQ
What is Applio used for?
Free, open-source AI voice conversion suite for creating AI covers, training custom voice models and converting voices in real time.
Is Applio free?
Yes, there is a free plan. Entire tool is free; no paid plans are listed on the page.
How much does Applio cost?
The vendor does not publish prices publicly or requires sign-in.
What are the best Applio alternatives?
Closest alternatives: ElevenLabs, Respeecher, Splice, Voice.ai, Fish Audio.
Data checked October 12, 2026 on the vendor website (applio.org).