TikTok doesn't have an auto-posting feature directly on iPhone.
Currently, the TikTok app on iPhone doesn't support scheduling auto-posts directly from Shortcuts or automatically posting videos on the device — meaning you can't just use your iPhone and Shortcuts to automatically post without external tools. This feature isn't available in the current TikTok app.
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Tools to help with TikTok auto-posting/scheduling
To automatically post TikTok videos (at the time you want):
Use a post scheduling service (Scheduler)
This is the most common method and the auto-publishing method that TikTok accepts through its official API:
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PostQuickAI – schedules TikTok videos to automatically post at the chosen time.
PostQuickAI
Predis.ai – supports uploading, writing captions + hashtags, and automatically posting according to a schedule you set. predis.ai
Quso.ai, Publer, Postpone – all allow you to connect your TikTok account and schedule video posts, captions, hashtags, etc. in advance.
When using these services, you can upload videos and set the posting time from your browser on your iPhone or Mac Mini, and the platform will automatically post them for you.
Some users report that posts automatically posted using tools may not perform as well as posts directly within the app (e.g., lower reach or engagement), so consider this if you are concerned about the display algorithm.
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