Free tools
TikTok tools you paste yourself
These tools do not reply to comments. ReplyStream drafts replies you approve — nothing posts without you.
Generators: 5 drafts a day unsigned, 15 if you sign in. Separate from ReplyStream reply units. For comments on your videos, use the TikTok comment reply tool.
Checkers
Run in your browser. Nothing is sent to the model.
TikTok Caption Length Checker
Check a TikTok caption against the 150-character limit and see what fits in the first ~80 characters of the hook.
TikTok Bio Character Counter
Count a TikTok bio against the 80-character limit before you paste it into the app.
TikTok Hashtag Checker
Count hashtags, catch duplicates, and flag junk or spammy patterns before you publish.
Will This TikTok Reply Get Me Banned?
A checklist for comment replies: own videos, human pace, no copy-paste spam. You still choose what to post.
TikTok Shop FAQ Reply Templates
Ready replies for size, shipping, and restock questions on TikTok Shop — you still send them yourself.
Best Time to Post on TikTok
Suggested local posting windows by timezone. A heuristic for planning, not ReplyStream analytics.
Generators
Drafts only. You still post in TikTok.
TikTok Caption Generator
Free TikTok caption ideas from a topic or product. Three options. You paste the one you want.
TikTok Hashtag Generator
Get a short mix of broad and niche TikTok hashtags. Three to five is usually enough.
TikTok Bio Generator
Draft a TikTok bio under 80 characters. Three options. You still paste it in the app.
TikTok Hook Generator
First-three-seconds lines for a TikTok. Spoken or on-screen hooks — you still film it.
TikTok Shop Q&A Ideas
Ideas for answering product questions on TikTok Shop. Not auto-replies — you still post the answer.
TikTok Pin Comment Writer
Draft a comment you can pin on your own TikTok or live. You still post and pin it.