Download Subtitle Sphere
Welcome to Our Journey
From passion project to community-driven software
A Labor of Love
Subtitle Sphere is a true passion project that took over 1.5 years of development to reach version 8.0.1. Every feature was crafted through countless late nights and unwavering dedication, all without external funding or corporate backing.
1.5+
Years in Development
10
Months Free Access
30+
Advanced Features
100%
Ad-Free Experience
Community Challenges
Originally, we wanted to offer everything completely free. For 10 months, every version was available at no cost, and we met many amazing community members who supported our vision. Unfortunately, some users took advantage through hoarding, spamming, and malicious activities, forcing us to adapt our approach.
| Feature | Basic Version | Pro Version |
|---|---|---|
| Price | FREE | $10 CAD One-Time |
| Ad-Free Experience | ✓ | ✓ |
| Video Transcription OpenAI Whisper Offline | ✓ | ✓ |
| Translation Services Google Online Translation | ✓ | ✓ |
| Subtitle Generation | ✓ | ✓ |
| Once Click Subtitle Generation | — | ✓ |
| AI Voice Generation Edge Online TTS | ✓ | ✓ |
| Unlimited Usage | — | ✓ |
| Privacy Focused Offline translation, transcription, subtitling, voice generation & cloning | — | ✓ |
| Multi-Device License Works on 5 Computers | — | ✓ |
| CUDA Compatibility | — | ✓ |
| Advanced Audio & Video Transcription OpenAI Whisper, Google Speech Recognition, Whisper-Google Fusion | — | ✓ |
| Multi-Engine AI Voices Chatterbox-TTS, Kokoro TTS, Edge TTS, gTTS, Gemini, OpenAI GPT TTS | — | ✓ |
| Multi-Engine AI Translation Google, Argos, Gemini, OpenAI | — | ✓ |
| Voice Cloning Technology Chatterbox/Resemble AI | — | ✓ |
| Offline & Online Translation | — | ✓ |
| Vocal Isolation Demucs | — | ✓ |
| Text Summarization Gemini & GPT | — | ✓ |
| Real-time Transcription & Translation Whisper + Gemini & GPT | — | ✓ |
| SRT Conversion to .Json & VTT | — | ✓ |
| Import Video from URL | — | ✓ |
| Import Transcript from YouTube | — | ✓ |
| Speech-to-Speech Translation & Voice Generation Kokoro TTS | — | ✓ |
| PDF/ePUB to Audio Book Conversion Kokoro TTS | — | ✓ |
| Advanced Audio Processing | — | ✓ |
| Advanced Video Processing | — | ✓ |
Exclusive Pro Member Benefits
- ✓ Access to all future feature updates and improvements
- ✓ Personal email support from the development team
- ✓ Priority bug fixes and technical assistance
- ✓ Activation key can be used on up to 5 computers
- ✓ Use OpenAI GPT inside the app for automatic translation, summarization, transcript generation, and audio output with your own OpenAI API key ($5 one-time credit — far more affordable than ChatGPT Plus at $20+ per month)
- ✓ Access Google Gemini inside the app for translation, text summarization, script generation, and text-to-speech using your Gemini API key (free via Google AI Studio or paid via Google Cloud)
🎯 Incredible Value Alert!
Most services charge $20+ monthly for basic features.
You're getting 30+ professional features for just $10 one-time -
that's what competitors charge in half a month!
The $10 one-time fee helps us maintain the project's sustainability, prevent abuse,
and ensure Pro is used by those who genuinely value advanced features.
Each license works on up to 5 computers and never expires.
Your purchase includes the activation key, the software itself, and all future updates — completely free.
Your purchase includes the activation key, the software itself, and all future updates — completely free.
Ready to unlock the full potential?
Download Pro Version
30+ Professional Features for $10 One-Time,
while competitors charge $20+ monthly for basic features,
you get lifetime access to our complete suite!
Or fill out the form below to download the Basic version.
You can upgrade to the Pro version anytime from inside the software by purchasing it.
You can upgrade to the Pro version anytime from inside the software by purchasing it.
Free Basic Version Download Form
⚠️ As stated above, this Free version includes only 4 basic features:
Video Transcription, Subtitling, Single-Engine Voice Generation, and Translation.
It is not CUDA compatible and
does not include updates or one-on-one support.
👉 Please refer to the video at the top of the page to learn more before downloading.