OpenSubs vs RNDRS Studio

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

OpenSubs compared with RNDRS Studio
Detail	OpenSubs	RNDRS Studio
What it does	Free AI subtitle generator that runs entirely in your browser	AI rendering workspace for architects that works from a sketch, model view or photo
Stage	Not given	Startup
Founded	Not given	2026
Based in	Not given	Not given
Pricing model	Not given	Freemium
Pricing	Free: transcription, translation on-device, all 12 subtitle styles, word-by-word highlighting, trimming, burning into video, and all export formats. Credits: $5 for 1,000 credits for cloud translation (approximately 1 credit per 30 subtitle lines).	5 free renders with no card required. Paid plans: Essential $19/month for 40 credits, Premium $29/month for 100 credits, Pro $79/month for 300 credits. One-time credit pack: $99 once for 300 credits that never expire. Annual billing available at discount: $190/year, $290/year, $790/year respectively
Key features	Speech recognition in the browser using Whisper Translation to 20 languages including Chinese, Japanese, Korean, Spanish, Portuguese, French, German, Italian, Russian, Arabic, Hindi, Indonesian, Thai, Vietnamese, Turkish, Polish, Dutch and Ukrainia Burn subtitles into MP4 without watermark Export to SRT, VTT, ASS and TXT formats Live subtitles over video playing in browser tabs via extension Support for multiple video formats including MP4, MOV, WebM and MKV No server processing—all work runs locally on user's machine	Upload sketches, model views or site photos to start rendering Select specific areas with brush, lasso or polygon to edit Attach reference images to communicate materials and style Keep all versions and compare directions in one project Create review links with expiry and comment collection Upscale images 2× for presentations Generate short videos from still images Export comparison boards and image bundles No plugin installation or GPU required Works with exported views from SketchUp, Revit, Rhino, Archicad and Blender
What makes it different	100% browser-based with no uploads—the video never leaves your machine Completely open source under AGPL-3.0-or-later so you can verify the code Free forever for transcription, styling and burning—pay only for optional cloud translation No watermark, no file-size limit, no queue, and no account needed to try	No plugin or GPU needed – works entirely in the browser from image uploads Keep every version as you iterate – all results stored together for comparison Works from sketches, model views and photos – not native CAD or BIM files Commercial use permitted on all paid plans Credits never expire on one-time purchase pack
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)	34 −1 (down) since last check	1 no change since last check
Trust Flow (Majestic)	10	0
Citation Flow (Majestic)	30	23
Referring domains (Majestic)	96	17

4 details filled in for both companies.

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