Applio
Applio is an open-source and free AI voice conversion suite that can convert audio into any timbre, perform real-time voice changing, support training timbre models with your own data, and run locally without an account. It is suitable for creators who do covers, live broadcast voice changing and dubbing.
Updated: 2026-10-26
What is Applio?
Applio is a fully open-source AI voice conversion suite licensed under MIT, maintained by the community, and supporting Windows, macOS, and Linux. It integrates a suite of voice-changing tools: ready-made timbre conversion, real-time voice changing, timbre model training, multi-timbre mixing, text-to-speech, and dataset inspection. Unlike commercial products that only offer online access, it focuses on local operation, no account required, no telemetry, and its code can be audited by users. The official website currently provides two usage paths: desktop application and online Playground.
Who is it for?
- Music lovers who create AI covers: They have a piece of dry audio and want to convert it to their favorite voice tone.
- Streamers and voice room players: They need real-time voice changing to maintain live broadcast effects without paying by the minute.
- Indie game and short video teams: They need batch dubbing but their budgets can't afford to purchase each dub individually.
- Developers researching voice models: They need a code base that is readable, modifiable and released under a permissive license.
Key features
6Voice Conversion
Use pre-made timbre models shared by the community to convert any audio into a target voice, supporting pitch adjustment, noise reduction, upsampling and batch file processing.
Real-time Voice Modulation
Low-latency inference enables instant voice transformation during singing, live streaming, and phone calls.
Model Training
Train timbres using your own audio dataset. The process is divided into several steps: preprocessing, feature extraction, training, and export. The official claims that it can be completed within a few steps.
Timbre Mixing
Fuse multiple timbre models into a new sound by proportion, and the proportion of each source can be controlled individually.
Text-to-Speech
Generate speech first, then pass it through a timbre model, suitable for batch content production such as voice-overs and dubbing.
Audio Analyzer
Checks the quality of the dataset before training, provides audio health information, and avoids wasting time on invalid data.
How to use Applio
- Get it running first before training: After installing the desktop version, first use a pre-madevoice from the community to perform a conversion, confirm that the graphics card and dependencies are working properly, and then proceed with training.
- Start with the desktop version: The official version provides both a standalone desktop application and the classic Gradio WebUI.
- Beginners should use the desktop version as it has fewer pitfalls in environment configuration.
- Prioritize data quality: Screen the materials with the audio analyzer before training.
- clean dry vocals are more effective than longer durations.
- Authorization and Compliance: Voice conversion involves the rights of others' voices, and the official has also issued an "Announcement on Model Access Adjustment" to regulate usage.
- obtain authorization before commercial use and comply with local regulations on voice cloning.
- Free does not mean zero cost: The software itself is MIT-licensed, no account required, and no paywall, but local training and inference still consume graphics card resources and computing power.
Traffic & popularity
Data month Sep 2026
Applio receives about 357.0K visits per month and ranks #101,342 worldwide.
Monthly visits
12 monthsTraffic sources
- Search43.7%
- Direct38.1%
- AI assistants10.2%
- Referrals6.4%
- Social1.6%
Top countries
- United States18.0%
- Italy9.1%
- India6.3%
- Russia4.8%
- Brazil3.9%
Estimated from third-party traffic data.
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