Caption & video editor for iPhone
Every competitor here is a cloud pipeline with a meter: upload the footage, spend credits, keep paying. Subly runs the whole chain on the device — transcription, the narrator voice, the render.
iPhone · iOS 18 or later · works in airplane mode
Word-by-word, burned into the video
Karaoke-style highlight with a live preview, and the same script becomes both the narrator audio and the word-synced captions.
One purchase removes the watermark and unlocks unlimited full-quality export. No monthly fee, no token meter, no credits that run out mid-edit.
Combine clips, split, trim and reorder on a scrub timeline with frame-accurate preview. Dissolve, fade, slide and zoom between them. B-roll overlays and a music bed with auto-ducking.
Type a script, pick a voice, and the voiceover is generated on your iPhone — unlimited, with no per-character fee. Cloud editors send your footage away and take broad rights to it. This one has nowhere to send it.
English-first, 90+ languages.
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