KotobaMate Support

KotobaMate is an iOS app for drafting difficult everyday messages, reviewing received text, saving recipient notes, and importing official LINE talk-history text files for on-device persona analysis.

Contact

Email: dev@hitsujilabs.com

For bug reports, include your device model, iOS version, app version, and the steps that caused the problem.

App Review Demo Talk File

Use the sample talk-history file below to verify the LINE talk import feature. The file contains fictional, non-personal sample messages in a LINE-like text format that KotobaMate can parse.

Download demo talk file Open text file

No account login is required. The demo file is only for testing the recipient profile import flow.

How To Verify LINE Talk Import

Download demo-line-talk.txt to the review device or iCloud Drive.
Open KotobaMate and go to 相手メモ.
Create a recipient profile or open an existing one.
Tap LINEトーク履歴ファイルを読み込む and select the demo file.
Confirm that the app fills the persona summary, favorable expressions, avoid expressions, tone hints, and preview.

Frequently Asked Questions

Do I need an account?

No. KotobaMate does not require sign-in.

Where is data stored?

Recipient profiles, imported talk summaries, and draft history are stored on the device. AI drafting may send text entered by the user to the Mate Series server for generation.

What if AI generation is unavailable?

The app shows the current state and uses local assistance where available so users can continue drafting. Generated text should always be reviewed before sending.

Is this professional advice?

No. KotobaMate is a writing assistant for everyday communication. It does not provide legal, medical, psychological, harassment, crisis, or other professional advice.