Support
Subline is made by a small team. Email support@subline.so and we'll reply within a few working days.
Frequently asked
Is Subline free? How does the trial work?
Yes. Download it and you get every Pro feature for three days, with no card and nothing to cancel: the trial starts on first launch and ends on its own. Exports are currently watermark-free on every plan. After three days you keep the free tier. Pro is $7.99 a month or $47.99 a year through the App Store; local prices are shown in the app before you subscribe.
What is in the free tier, and what does Pro add?
Free: on-device transcription, manual caption editing, starter styles and HD (720p) output for clips up to two minutes. On-device captions never leave your phone; the languages available depend on the model your iPhone can run (99 languages on iPhone 13 and later, English and the major European languages on iPhone 12, English only on older models). Pro adds studio transcription in the cloud for 99 languages on any iPhone, AI caption design, translation, Auto Clip, premium and reusable styles, audio cleanup, Full HD and 4K output, and clips up to ten minutes.
How do I cancel my subscription?
Subscriptions are managed by Apple. Open Settings on your iPhone → tap your name → Subscriptions → Subline → Cancel. Deleting the Subline app does not cancel the subscription.
I reinstalled Subline or moved to a new iPhone. Where is my Pro?
Open Style or Vibe to reach the paywall and tap Restore purchases. Your subscription is tied to your Apple Account, not to the install, so it comes back on any iPhone signed in with the same account.
Can I get a refund?
Refunds are handled by Apple. Request one at reportaproblem.apple.com.
My captions look off. The transcription is wrong.
On-device transcription works best with clear audio and a single speaker. If you're getting poor results, try the cloud transcription option in the editor (Pro) which uses a different model.
How do I delete my data?
Open Settings → Privacy → Delete my data to delete the server data for this app install. Delete saved projects from your project library to remove their local media. This does not cancel an App Store subscription. For help, email privacy@subline.so with the account ID shown in Settings → Account.
Does my video leave my phone?
On-device transcription and audio cleanup keep your audio on your phone. Cloud features are part of Pro and named as such in the app; the privacy policy lists each provider and what it receives. Vibe shares one still frame with your captions; translation and cloud editing share text and project information, not your video. See our privacy policy for details.
How do saved translations work?
In the editor, open the project menu and choose Translate. New languages use the cloud and require Pro or an active trial. Saved languages switch without another translation request, and each version keeps its own edits. Your original audio and captions are kept.
I found a bug.
Email support@subline.so with a description of what you did and what went wrong. If you can include the steps to reproduce and the iOS version you're on, we can fix it faster.
Usage limits
Subline is built for short-form video: you can import up to 10 minutes of footage, and finished clips can be up to 2 minutes on the free tier or 10 minutes with Pro (including during the trial). Cloud AI features also have daily fair-use limits, generous enough that normal editing never hits them; they exist only to prevent abuse. Each limit resets daily at midnight UTC. The free tier works on your iPhone and has no daily limits.
| Feature | Free | First 3 days (per day) | Pro (per day) |
|---|---|---|---|
| Studio transcription | On device, no limit | 20 | 100 |
| Vibe (AI caption design) | Not included | 40 | 100 |
| Caption translation (new languages) | Not included | 40 | 100 |
| Auto Clip | Not included | 40 | 100 |
On-device transcription (the free tier) runs entirely on your iPhone and has no daily limit. The model is downloaded once (480 to 626 MB depending on your iPhone) and can be removed in Settings.