FlowSub review
A low-cost web tool for multilingual subtitles and basic video caption workflows.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
FlowSub is a web-based AI subtitle generator for YouTubers, podcasters, course creators, and other video publishers. It transcribes video and audio, detects languages automatically, translates subtitles, and provides inline editing before export. Caption files can be saved as SRT, VTT, TXT, or ASS, while subtitles can also be burned directly into MP4 video. Its focus is practical caption production rather than a broad video-editing workflow.
The free plan covers the core workflow: all subtitle formats, subtitle translation, the subtitle editor, video burn-in, no watermark, and support for 29+ languages. The Pro plan costs $4.99 per month with monthly billing or $3.49 per month with annual billing. Pro adds 100 credits per month and priority processing while retaining unlimited transcription, translation, editing, export, and burn-in features. That makes the free tier a useful starting point for occasional caption work, while Pro is aimed at users who need additional processing capacity and faster handling.
FlowSub’s standout feature set is its combination of transcription, translation, editable subtitles, multiple export formats, and direct MP4 rendering in one web service. The trade-off is a focused platform experience: it runs on the web, and the paid plan organizes usage around a 100-credit monthly allowance. Users who need straightforward multilingual subtitles at a low entry price should consider FlowSub. Those seeking a native desktop or mobile workflow, broader language coverage, or a wider production environment should look for a more expansive alternative.
FlowSub pros and cons
- Where it wins
- Free plan includes translation, editing, exports, and no watermark
- Supports SRT, VTT, TXT, and ASS subtitle exports
- Burns subtitles directly into MP4 video
- Where it doesn't
- Runs through the web rather than a native desktop or mobile app
- Pro includes a 100-credit monthly allowance
- Priority processing is reserved for the Pro plan
FlowSub fact sheet, pricing and score →
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