iPhone Screenshots


The application changes your voice into various character’s voice in real-time by AI technology.
In the application, two characters have been installed as the preset voice models.
(Male voice model “Kanade Minato” and Boyish female voice model “CRIMMZOH”)
You can also install other voice models with in-app purchase.
More voice models will be added soon.

[How to play]
1. You can play with iPhone alone, but if you want to enjoy voice change with clearer sound, please use earphone with microphone. (You can also play with the earphone with microphone attached to the iPhone)
2. When using the built-in microphone of the iPhone, you can reduce howling by playing with rotation lock switch off.
3. You can record a converted voice with the red button at the bottom right. After stopping recording, open the “RecordedList” from the setting icon on the upper right, and a list of recorded data will appear. You can save it on your iPhone or send it by email.

[Notes when playing]
・ When first started, it is in the mute mode. When using earphones with a microphone, please cancel the mute mode after connecting the earphones.
-If you make a big sound from the iPhone speaker, unpleasant noise is likely to occur due to the howling. If you are concerned about noise, please lower the volume to play or use earphones with a microphone.
-When using the built-in microphone of iPhone, the output volume is muted to avoid the howling, but converted voice is recorded normally.
・ After selecting a voice model, please select the narrator type that sounds good for you from the narrator list.

【About Voidol】
Voidol is AI real-time voice conversion application that can change your voice into various character’s voice. You can use this software for game streaming, online chat, or YouTube videos.
Voidol macOS version won the number one sale on the paid software category on Mac App Store. Voidol Windows version won the number one on the most purchased software category on Amazon.jp.

【About R.C.voice】
R.C.voice = “R” means “real-time & real-quality”, “C” means “Changer”.

Voidol uses R.C.voice technology developed by CRIMSON TECHNOLOGY, Inc.
This technology is based on CRIMSON TECHNOLOGY’s original “Metamorphone” method. It has been developed in partnership with the research team of Prof. Toda Tomoki of Nagoya University.

- Sampling Frequency: 44100Hz
- Bit Width: 16bit
- Latency: within 100ms
- Pitch shifter is used for the voice conversion between male and female.

※Mac App Store, iOS, iPhone is a trademark of Apple Inc.
※R.C.voice is the registered trademark of CRIMSON TECHNOLOGY, Inc.
※Voidol is a trademark of CRIMSON TECHNOLOGY, Inc.
※Described company name and product name are the registered trademarks or trademarks of each company.
※All information including product specifications, is current on the date of the press announcement, but is subject to change without prior notice.

What’s New

Version 2.3.0

- Add new purchasable voice models: U-ray chan

Ratings and Reviews

1.8 out of 5
41 Ratings

41 Ratings

HIT初心者 ,



max6 Ultra ,









コウッチ ,



In-App Purchases

U-ray Chan
Voice model of U-ray Chan
Kizuna Akari
Voice model of Kizuna Akari
Hanazono Kotone
Voice model of Hanazono Kotone
Voice model of Megpoid
Yuzuki Yukari
Voice model of Yuzuki Yukari
Terashima Yufu(simpαtix)
Voice model of Terashima Yufu(simpαtix)

App Privacy

The developer, CRIMSON TECHNOLOGY, Inc, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Used to Track You

The following data may be used to track you across apps and websites owned by other companies:

  • Identifiers
  • Usage Data
  • Other Data

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Identifiers
  • Usage Data
  • Other Data

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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