Public accounts only

Track another Instagram account's follower changes

Yes — you can view the follower changes of an Instagram account that isn't yours, as long as that account is public. Here's how scan-based tracking works for social managers, brands, and creators, which tools can actually do it, and what no tool can show you.

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Facts checked against each tool's own site and app-store listing — last verified October 9, 2026. How we test

The shortlist

TL;DR: tools that can check accounts other than your own

1
UnfollowersTrackour tool
UnfollowersTrack — best if you want the follower and following lists of a public account that isn't yours, starting with a free preview and no account or password.
Works for public profiles with no more than 20,000 followers or following; a subscription adds completed full scans and change history.
2
Dolphin Radar
Dolphin Radar — best if you want ready-made weekly reports on a public account and are happy to pay per report or subscribe.
Free preview; $9.90 one-time relationship report; unfollower detection on the Guardian plan ($12.90 a month, or $8.90 a month billed annually).
Full comparison
3
IGDetective
IGDetective — best if you want a few public accounts checked daily for follows, unfollows, likes and Stories on a weekly or monthly subscription.
Web only, no Instagram login, free IGDetective account for one profile; Premium at $12 a week or $30 a month as shown to a logged-out visitor on October 9, 2026, for up to five profiles.
Full comparison
4
Snoopreport
Snoopreport — best if you want a log of the likes and follows a public account makes, delivered as weekly or monthly reports.
Paid activity monitor on the web and iOS; email account and paid plan required, no free trial.
Full comparison

Full disclosure: UnfollowersTrack is our product, so it tops our own list. The short list isn't padding — most trackers structurally can't check an account that isn't yours, as explained below.

Quick verdicts

Who should pick what

If you want follower lists and unfollows for a client, competitor or collab partner:
UnfollowersTrack.
If you want to see which followers two public accounts share:
Our account comparison page (one-account scans today). Compare two public accounts
If you want hands-off weekly reports on one public account:
Dolphin Radar.
If you want a few accounts checked daily, including likes and Stories:
IGDetective. UnfollowersTrack vs IGDetective
If you want a log of what an account likes and who it follows:
Snoopreport. UnfollowersTrack vs Snoopreport

Honest look

Who actually needs this

Checking a public account you don't own sounds niche until you've had to do it for work. Three groups run into it constantly:

Social managers running client accounts

Audit a client's follower changes without anyone handing a password back and forth between agency and client — the scan works from the public @username alone.

Brands benchmarking a competitor

Watch a competitor account's follower churn between your scans and put your own growth numbers in context.

Creators vetting a collab

Before committing to a collaboration, look at a partner account's recent public follow activity and how its follower base is trending.

Honest look

What you can and can't see

This page stays useful only if it's straight with you about the limits, so here they are.

You CAN see

Public follower and following lists, and how they change between your completed scans. A free preview samples current public follower and following lists. A completed subscribed full scan establishes the baseline; later completed full scans can detect changes from that baseline.

You CANNOT see private accounts

A private account's follower list isn't publicly visible, so no tool — ours included — can track it. Full stop.

You CANNOT see likes, DMs, or activity logs

We compare public follow lists between scans; we don't log what an account likes or comments on. Activity monitoring is a different product category — Snoopreport and IGDetective offer it.

You CANNOT get real-time alerts

Results update when you run a scan. Tools that read public profile data refresh periodically — on a schedule or when you ask — rather than instantly.

Side by side

Tools that can check another account, side by side

Tool	Platform	Instagram login	Checks other public profiles	What you get	Cost to start
UnfollowersTrack	Web	Not required to start	Supported profiles up to 20,000	Follower & following changes between completed scans	Free sampled preview
Dolphin Radar	Web	Not required	Any public account	Relationship and unfollower reports	Free preview; $9.90 report or Guardian from $8.90/mo
IGDetective	Web	Not required (free IGDetective account)	Any public account	Follows, unfollows, likes & Stories, checked daily	Free (1 profile); Premium $12/wk or $30/mo (Oct 9, 2026)
Snoopreport	Web & iOS app	No — email sign-up	Any public account	Likes & follows activity, weekly/monthly reports	From $4.99/mo, no free trial
Analytics apps (InsTrack, Reports+)	iOS app (InsTrack also web)	Facebook or Instagram sign-in in the apps	Partly — InsTrack: Professional accounts only	Analytics rather than follower-list changes	Varies
Own-account-only tools (FANS, Unfollr, DontFollowBack, FollowBuddy, FollowMeter…)	Apps & web tools	Varies	No — your own account only	Stats for your own account	Varies

Competitor details come from each product's own website, pricing page and app-store listing, checked on the review date shown on this page. Competitors are independent products; their features and prices may change, and no third-party service can promise perfect real-time follower data. Product names are trademarks of their respective owners. Read how we test and verify claims

Honest look

Why login apps and ZIP-export tools can't do this

The short table above isn't cherry-picked — it's structural. Almost every unfollower tracker belongs to one of two families, and both are locked to a single account by design.

Login apps see the logged-in account

FollowMeter and Followers & Unfollowers work by signing in with an Instagram account — so they report on that account and nothing else. Analytics apps reach a little further: InsTrack tracks other accounts, but only Professional ones, and Reports+ advertises profile analytics inside its signed-in app.

Example: UnfollowersTrack vs FollowMeter

Export tools see the account behind the ZIP

FANS, Unfollr, DontFollowBack, and FollowBuddy analyze Instagram's official data export — which Instagram only issues for your own account. Password-free, yes; other accounts, no.

Example: UnfollowersTrack vs FANS

Scan-based tools read public data

UnfollowersTrack, Dolphin Radar, IGDetective, and Snoopreport work from what a public profile already shows to anyone. That's the architecture that can check public accounts that aren't yours (within each tool's limits) — and it's also why private accounts are off-limits for all four.

Example: UnfollowersTrack vs Snoopreport

Honest look

Works for business, creator, and personal accounts

There's no Professional-account gate here: UnfollowersTrack doesn't require a Facebook login or a business profile (that's InsTrack's requirement, not ours). Personal, creator, and business accounts all work the same way — if the profile is public and within the size limit below, you can scan it. That includes client accounts you manage, with no password sharing involved.

One honest sizing note: scans support public profiles with no more than 20,000 followers or following, which covers most personal, creator, and small-brand profiles.

Step by step

How to run a scan on a public @username

Enter the @username

Type the public profile's handle — a client account, a competitor, or a collab partner. If the account is private, the scan can't read it (no tool can).

Review the free preview

The free preview samples that profile's current public follower and following lists. To track changes, a completed subscribed full scan sets the baseline — so start early if you'll want trends later.

Re-scan to see changes

Later completed full scans are compared with that baseline: who followed, who unfollowed, and how the account is trending between your checks.

Questions

Frequently asked questions

Can I see who unfollowed someone else on Instagram?

Yes, for public accounts with no more than 20,000 followers or following. A completed subscribed full scan of the public @username sets the baseline, and later completed scans detect who unfollowed. Private accounts can't be tracked by any tool.

Can any tool track a private account?

No. Instagram doesn't make a private account's follower or following lists public, so a scan of public data — ours included — can't read them.

Will the account owner know I checked?

A scan reads the same public data anyone sees when visiting the profile, and Instagram doesn't send notifications about profile scans. You also don't need to follow, like, or interact with the account to run one.

Can I see what someone likes, comments on, or their activity?

No. UnfollowersTrack shows public follow-list changes between your scans — that's the whole product. A log of the likes and follows an account makes is a different category of tool: Snoopreport sells it as a paid subscription with weekly or monthly reports, and IGDetective also advertises recent likes and comments on public profiles.

Is it allowed to check a public account's followers?

Public profiles show their follower and following lists to anyone who visits, and a scan reads that same public data — no login, no password, and no private information involved. We can't give legal advice, so if you're doing client or agency work, follow your own compliance rules.

Does it work for business and creator accounts?

Yes. There's no Professional-account requirement and no Facebook login — any supported public profile works, whether it's a personal, creator, or business account. That includes client accounts you manage: you can scan them without anyone sharing a password.

Keep reading

All ten unfollower trackers compared

Compare two public Instagram accounts

Want recent follows instead? Recent Follow Tracker

Can you see who unfollowed you on Instagram?

Best recent-follow trackers for Instagram

UnfollowersTrack vs Unfollr

UnfollowersTrack vs DontFollowBack

Check a public @username

Enter the handle of a public profile for a free sampled preview — no login, no password, public data only.

public @username

Run a free scan

public @username

Search Now

No passwordPublic profiles only100% anonymous