SFX Engine vs PassiveShorts

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

SFX Engine compared with PassiveShorts
Detail	SFX Engine	PassiveShorts
What it does	AI sound effect generator that creates royalty-free SFX from text descriptions in seconds	AI faceless video generator that auto-posts to YouTube and TikTok
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Paid	Not given
Pricing	Starter: $10/month or $8/month billed yearly for 500 credits. Creator: $25/month (50% off first month) or $20/month billed yearly for 4,000 credits. Pro: $90/month (50% off first month) or $72/month billed yearly for 15,000 credits. Each sound effect costs 3 credits. Browsing and downloading from th	Basic: $19/month for 3 posts per week. Pro: $39/month for 1 post per day. Yearly billing offers 2 months free. Pricing is per series; users can run up to 10 series simultaneously.
Key features	AI sound effect generation from text descriptions Sound effects up to 47 seconds long Background music creation DJ transition maker Stem splitter for music Royalty-free commercial license included Free public library of pre-made sounds API access on all plans Voiceover generation	Auto-post to YouTube and TikTok on schedule 19 visual styles from photorealistic to anime and claymation AI-generated scripts and voiceovers Custom caption styles with fonts and animations Review videos before publishing or post as private Create slideshows from uploaded or generated images Run up to 10 video series simultaneously Custom topic creation for video content
What makes it different	Generated sound effects are royalty-free for commercial use without licensing fees Sounds created from text descriptions are unique to your project Generate sounds in 5-15 seconds typically Supports diverse use cases including games, video, podcasts and music production Cancel anytime with no long-term commitment	Fully automated video generation and publishing with no editing or manual uploads required Full commercial rights to generated videos with no licensing fees 7-day automatic refund based on unused video allowance No face or recording required—completely faceless channel operation
Free plan	Not given	Not given
Open source	Not given	Not given
Platforms	Not given	Not given
Public API	Not given	Not given
Community votes	0	0
DR (Domain Rating by Ahrefs)	40 +1 (up) since last check	17 +1 (up) since last check
Trust Flow (Majestic)	26	5
Citation Flow (Majestic)	42	26
Referring domains (Majestic)	850	52

4 details filled in for both companies.

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