Tianjin Yuchengzhi Information Technology Co., Ltd.

Information Technology, Software Development & Digital Content Services

We build practical desktop tools, AI-assisted productivity software, and websites — and deliver reliable digital content solutions for creators, small businesses, and content teams.

macOS App Development Web Development AI Productivity Tools Video Translation & Subtitles Document Digitization Equation Typesetting
2
In-house macOS Apps
Breeze & Downlo
6
Core Service Areas
Software · Web · Content
Bilingual
zh & en Support
Chinese & English
1–2 days
Response Time
Business days

Our Products

Practical macOS tools we built

Breeze Mac Whisper

Available

Professional Speech Recognition

macOS
Breeze Mac Whisper screenshot

A professional macOS speech recognition tool built on OpenAI Whisper — faster than native, with fixed Simplified/Traditional Chinese output, speaker identification, real-time mic transcription, and bilingual subtitles.

macOSWhisperSpeaker IDLive TranscriptionBilingualzh/tw Output
App Store version coming soon
Learn more

Downlo

Available

Professional Video Downloader

macOS
Downlo screenshot

A professional macOS video downloader supporting authorized content from hundreds of platforms — similar to Downie. Supports Cookie login, MP4 output, subtitle download (Pro), and queue management.

macOSVideo DownloadCookie SupportMP4 OutputSubtitle DLQueue Mgmt
App Store version coming soon
⚠ For use only with videos you own or are authorized to download. Ensure you have the appropriate rights or platform permission before downloading any content.
Learn more

How We Work

A clear, transparent process with communication at every step

01

Submit Requirements

Describe your project via email or our contact form

02

Assess & Quote

We evaluate feasibility and provide a proposal with pricing

03

Confirm Scope

Agree on feature scope, delivery format, or sample standards

04

Deliver & Follow Up

We deliver, support revisions, and welcome long-term collaboration

Have a project in mind?

Reach out by email or use the contact form. We typically respond within 1–2 business days.

Get in Touch