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SightSinger vs SoulX-Singer

Both stand on ai singing voice generators. Which one you can start free with, which one lets you read the code, and what each costs once you pay.

SightSinger

Free plan AndroidiPhoneMac+1

SightSinger focuses on turning existing MusicXML scores into vocal demos and rehearsal materials, with playback controls for working through parts. Its stated scope is narrower than full production or text-prompt songwriting, and rendering uses credits.

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SoulX-Singer

Free plan LinuxSelf-hostedWeb

SoulX-Singer combines voice synthesis, conversion, and MIDI editing with web demos and a local workflow. Check and correct automatic preprocessing results before relying on them, and use voices with appropriate consent.

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The facts

SightSingerSoulX-Singer
Free planYesYes
Open sourceNot publishedNot published
Runs onAndroid, iPhone, Mac, WebLinux, Self-hosted, Web
Lowest paid planSee the plansFree or on request
Plans published101
MakerNot publishedNot published
Websitesightsinger.appgithub.com
On ai singing voice generators#6 of 25#10 of 25

SightSinger: what it does well

  • Creates choir section references and part-learning demos.
  • Player supports score highlighting, repeats, and endings.
  • Offers per-track mute, solo, and volume controls.
  • Supports movable-do and fixed-do solfege.
  • Lists lyric support across multiple languages.

What to know first

  • Requires score-led input rather than text prompts.
  • Intended for demos and rehearsal tracks, not studio production.
  • Vocal rendering consumes credits for each part and render.
  • MIDI accompaniment also consumes credits.

SoulX-Singer: what it does well

  • Free code and weights under Apache 2.0
  • Supports Mandarin Chinese, English, and Cantonese
  • Controls pitch, rhythm, and expression through F0 or MIDI
  • Includes singer-timbre cloning and voice conversion
  • Offers web demos and local inference

What to know first

  • Automatic preprocessing may misalign lyrics and notes
  • Local inference requires setup with Conda, Python 3.10, and pip dependencies
  • Users are asked to avoid unauthorized impersonation and deceptive audio

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