Free social media scheduler for every platform you post on

In the Bluesky app or on bsky.app, open Settings → Privacy and security → App passwords → Add app password. Give it a name such as “GrabCast”, leave “Allow access to your direct messages” off, and copy the password (it looks like xxxx-xxxx-xxxx-xxxx). In GrabCast, open Accounts → Connect → Bluesky and enter your handle and that app password. GrabCast refuses your main password, never stores the app password (only an encrypted login session) and you can revoke it in the same Bluesky screen at any time. If your account lives on your own server (a custom PDS), open “Your account is on another server?” and enter its address. You can connect several Bluesky accounts.

Mastodon is made of many independent servers. If you already have an account, enter its server (for example mastodon.social or the part after the second @ in @you@server). If you are new, pick a general-purpose server that is open for sign-ups, in your language, with rules you agree with — joinmastodon.org/servers lists them. In GrabCast, open Accounts → Connect → Mastodon, enter the server and approve GrabCast on your server's own sign-in page. GrabCast reads each server's own limits (characters per post, media, file sizes, poll options), so the composer always counts against the right numbers. You can connect accounts on several servers.

Scheduling your own posts is allowed on Bluesky and on most Mastodon servers, but every Mastodon server sets its own rules: some ask brands and automated accounts to post “unlisted” (Quiet public), to mark the profile as automated, or not to post more than a few times an hour. Check your server's About page before scheduling a lot. GrabCast never follows, likes or replies on its own — likes, boosts and replies in the Inbox happen only when you click them — and it caps actions per account per hour to stay well inside both networks' rate limits.

Posts with up to 4 images (Bluesky) or your server's media limit, one video, alt text, threads, link cards, quote posts, who-can-reply settings and content labels on Bluesky, and content warnings, visibility, languages and polls on Mastodon. Replies and mentions appear in the Inbox where you can answer, like, repost or boost, hide replies (Bluesky), mute or block. Analytics show likes, reposts, replies and quotes per post plus follower history. Mastodon posts can be edited after publishing; Bluesky posts can't be edited, so GrabCast offers “Delete & repost”. Disconnecting an account deletes its Bluesky session or revokes the Mastodon token.

Yes. The planner, content calendar, queue, platform checks, previews, imports, approval links and reminders are free, with no credit card and no channel or post limits set by GrabCast. The platforms have their own limits — for example, Instagram allows 100 API-published posts per account in 24 hours.

When you connect a Facebook Page or an Instagram professional account, GrabCast publishes or schedules a post only after you tick a confirmation box and click Schedule or Publish now. Connecting accounts is in beta while the platforms review GrabCast; YouTube and TikTok publishing follow after their reviews. Without a connected account, your drafts and planned times stay on your device, and GrabCast reminds you when it's time to post so you can publish in one tap.

Instagram must be a professional account (Business or Creator, free to switch in the Instagram app) linked to a Facebook Page you manage; you connect it by continuing to Facebook and picking that Page. For Facebook you need to manage the Page with permission to create content. YouTube needs a Google account with a channel, and you choose each video's visibility and answer YouTube's made-for-kids and altered-content questions. For TikTok, GrabCast shows only the privacy and interaction options your account allows. The setup guide on the dashboard (Help, then Setup guide) walks you through it, and the Accounts tab shows each account's status with a one-click Reconnect.

It can be, depending on what you need. As of September 2026, Buffer's free plan covers 3 channels and 10 queued posts per channel, while Later and Hootsuite offer free trials instead of free plans. GrabCast's planner has no channel or queue limits of its own and includes queue slots, hashtag groups, caption templates and approval links for free. Direct publishing through GrabCast is still in beta, so check the comparison table for details.

Without a connected account, drafts, captions, planned times and attached photos and videos are stored in your browser (IndexedDB) on this device and are not uploaded. Use Settings → Export to back them up or move them to another computer. When you save or publish to a connected account, the post and its media are stored in your GrabCast account so they can be published on time.

Instagram: JPEG images up to 8 MB with a 4:5 to 1.91:1 aspect ratio, Reels of 3 seconds to 15 minutes, Stories up to 60 seconds, 2,200-character captions and at most 5 hashtags (Instagram lowered the cap from 30 in December 2025). Facebook: Reels of 3 to 90 seconds in vertical 9:16 MP4, photos up to 10 MB, 2 to 10 images for a multi-photo post. TikTok and YouTube get length, format, title and caption checks. Frame rate and codecs can't be checked in the browser.

Yes. Smart import reads a folder of videos and photos with optional caption files, subtitles or a schedule.csv, checks every platform's rules and can place everything with a posting pack such as daily at 7 PM. You can also import up to 500 rows from a CSV file after a dry-run preview, and spread unscheduled drafts across your queue time slots in one click.

Click Share for approval in the composer to get a link that contains the post text, platforms and time. The post is stored inside the link after the # sign, so it never reaches GrabCast's servers. The reviewer opens it without signing up and copies back an approval or a change request. Photos and videos are not included in the link.

When you click an AI button, such as Write from an idea, Rewrite, Suggest hashtags or Translate, the text you wrote is sent to GrabCast's AI service (or a fallback AI provider if it is busy) to write a suggestion. Photos and videos are never sent. The suggestion is labeled as AI and you choose whether to use it.