Comparison
Unfollr alternative: how SpacerrX compares
These two are closer than anything else in this list. Both are browser extensions, both read your own logged-in session instead of asking you to authorize an app, and both give away the follower cleanup for free. The split is what happens after the cleanup.
The short answer
Unfollr is a focused follower tracker. It stores snapshots of your audience in your browser and compares them, so it can tell you who unfollowed you and when, and it keeps doing that over time. Follower analysis is the whole product.
SpacerrX is a follower tracker plus the daily loop that follows it. The non-follower list is a live comparison rather than a stored history, and the rest of the toolkit, one-tap and AI replies, live niche trends, drafting in your own voice and scheduling, is what the follower data feeds into.
Side by side
| Feature | SpacerrX | Unfollr |
|---|---|---|
| Form factor | Chrome extension (Manifest V3), works inside x.com | Browser extension, works inside x.com |
| Account access | Reads and unfollows run in the X session you are already logged into: no authorization step, no password. Publishing scheduled posts uses an official X connection you authorise once and can revoke | Reads your own logged-in session, no authorization step and no password |
| Non-follower tracking | Yes, free and unlimited, with groups | Yes, free, this is the core product |
| Who unfollowed you | Not tracked. The list is a live comparison of who you follow against who follows you, not a history of past unfollows | Yes. Stores snapshots locally and diffs them, so it can report unfollows over time |
| Unfollowing | One tap each, pace-warned. 20 a month free, unlimited on a plan | Not the focus of the product |
| AI writing | Posts and replies drafted in your distilled voice, in the reply box where you write them | Not offered |
| Trend research | Live niche posts with real engagement right now, custom search, and AI post ideas | Not offered |
| Post scheduling | Yes. Scheduled posts publish with your browser closed, plus opt-in Ghostwriter that drafts and queues on a cadence you set | Not offered |
| Engagement automation | None for engagement. Every reply, follow, and unfollow is one tap you press | None, it is a read-only analysis tool |
| Networks | X only | X, plus a separate Instagram tracker |
| Priced by | A monthly AI credit pool. Follower count and account size never change the price | Free for the core tracker |
Unfollr details verified from their public product pages on July 27, 2026. We deliberately don't quote their prices here, since they are tiered and change over time. Check their site for current details.
When Unfollr is the better pick
- You specifically want to know who unfollowed you and when. Unfollr stores snapshots and diffs them over time; SpacerrX deliberately does not keep that history, so this is a real difference rather than a framing one.
- You want one small tool that does follower analysis and nothing else, with no account and no sign-in at all.
- You track an Instagram audience as well as an X one.
- You want the whole thing free forever, with no paid tier you might eventually want.
When SpacerrX is the better pick
- You want the cleanup to lead somewhere: replies, posts, trends and scheduling in the same place, rather than a list you then act on by hand.
- You want unfollowing built in, one tap at a time with a pace warning, instead of doing it manually afterwards.
- You want drafts written in your own distilled voice rather than writing every reply from scratch.
- You are trying to grow rather than audit, and the follower list is the start of that work rather than the end of it.
Common questions
- Does SpacerrX track who unfollowed me, like Unfollr does?
- No, and it is worth being direct about it. Unfollr stores snapshots of your audience and compares them, which is how it reports unfollows with dates. SpacerrX runs a live comparison instead: it shows who you currently follow that does not follow you back, which works from the moment you install it but does not tell you who left last week. If unfollow history is the thing you actually want, Unfollr does it and we do not.
- Are both really free?
- The follower tools are, on both. Unfollr gives away its core tracker. SpacerrX gives away the full non-follower tracker with groups, unlimited and with no card, plus 20 one-tap unfollows a month. The difference is that SpacerrX also has paid tiers for the AI writing, trends and scheduling, which Unfollr does not offer at any price.
- Do either of them need my X password?
- Neither. Both work through the X session already open in your browser, which is the right design for this job. SpacerrX does use an official X connection for one thing only, publishing scheduled posts, because that has to happen while your browser is closed. You authorize that yourself, only if you use scheduling, and you can revoke it at any time.
- Which should I pick?
- If you want a free, single-purpose tool that answers who unfollowed me, pick Unfollr. If the follower list is step one of actually growing the account, and you want the replies, posts, trends and scheduling that follow it, pick SpacerrX. They are not really competing for the same hour of your day.
Other comparisons
SpacerrX vs Circleboom
Looking for a Circleboom alternative? SpacerrX is a Chrome extension that works inside your own X session, with no password. An honest side-by-side.
CompareSpacerrX vs Tweepi
Tweepi shut down in April 2023 after X API pricing changed. Here is what still does the job: a free, unlimited non-follower tracker in your browser.
CompareSpacerrX vs Crowdfire
Crowdfire shut down in May 2025 after 15 years. If you used it to see who doesn't follow you back on X, here is the free replacement for that specific job.
CompareTry the follower tools free
The non-follower tracker and 20 unfollows a month are free with no card, so you can try it on your own account before paying for anything.