Quick answer: Both DolphinRadar.com and Lurk returned public Instagram content without an Instagram login in our checks. Lurk's free Story Viewer returned an active Story for both @nasa and @natgeo. A separate Lurk follow-result page displayed account information and recent-follow summaries, but blurred the individual accounts behind an unlock prompt. DolphinRadar also returned both accounts, and its NASA viewer displayed Stories, Posts, Reels, Highlights, Reposts, and Tagged sections. For a broad public-content view, DolphinRadar is the better fit based on what we observed. For a focused, free Story check, Lurk worked. Both companies offer activity-tracking products, but we did not run a paid, long-term tracking test on either service.
This comparison separates viewing a public account now from monitoring changes over time. A successful Story lookup does not prove that follow alerts, historical reports, or paid tracking work as advertised.
At a Glance
| Question | DolphinRadar | Lurk |
|---|---|---|
| Public accounts checked | @nasa and @natgeo returned in a normal browser | Story Viewer returned one live Story for each account; anonymous profile lookup returned @nasa |
| Instagram login for these public lookups | Not required | Not required |
| Content observed | NASA: Stories, Posts, Reels, Highlights, Reposts, and Tagged sections | NASA and NatGeo: live Stories; NASA: Highlights |
| Profile-data caveat | The tested accounts returned; third-party data can still change | NASA anonymous profile lookup displayed 0 posts, despite the account having posts |
| Recent follows/followers | NatGeo's Recent Followers and Recent Following sections returned data in a separate DolphinRadar tool | A supplied @lena result showed recent-follow summaries, but blurred individual accounts behind an unlock prompt; full results and alerts were not tested |
| Ongoing activity tracking | Sold through separate viewer, Recent Follows, and Social Insights plans | Advertises follow activity, notifications, and an activity timeline; paid workflow not tested end to end |
| Free access | Public-content viewing and individual downloads | Story viewing and a limited recent-follows preview; full list was not shown |
| Published follow-tracking price | Separate Recent Follows/Followers plan: $6/month | US iOS Lurk Premium: $19.99/week or $119.99/year; continuing web price not published |
| Other paid viewing plans | Viewer & Downloader tracking: $6.99/month for one profile or $69.99/year | No separately priced viewer plan identified in the public pricing page |
These are point-in-time results, not a guarantee that every public account or feature will work on every visit.
How We Checked Them
We used the public Instagram accounts @nasa and @natgeo. The manual browser checks covered whether the account returned without an Instagram login and what content or profile information was actually visible. We also examined a supplied screenshot of Lurk's @lena result page, followed Lurk's own iOS download button to its US App Store listing, and reviewed each company's public product and pricing pages. The Story, profile, and visible result-page details are observations; tracking features and plan inclusions are identified as published product information unless we verified the specific result. We did not independently confirm the accuracy of the @lena page's counts or classifications.
No private account, Instagram password, paid subscription, or long-running alert was part of this test. We cannot claim that either service detects every new follow, sends alerts immediately, or retains a complete history from this short test.
Public Profile Viewing
DolphinRadar returned both test accounts in a normal desktop browser. On NASA, we saw separate Stories, Posts, Reels, Highlights, Reposts, and Tagged sections, along with a Story notification control and a bulk-download option. The NatGeo viewer also returned. This makes it useful when the goal is to inspect several types of public content from one account rather than only the current Story.
Lurk has two relevant web tools. Its free Story Viewer returned one live Story for NASA and one for NatGeo in the supplied manual tests; NASA also showed Highlights. Its anonymous viewer returned NASA's identity and follower/following figures in our September 23 follow-up, but showed 0 posts. We would use Lurk for the Story result we verified, while cross-checking its profile statistics before citing them.
The 0-post figure is a limitation of the observed Lurk profile result, not evidence that its Story Viewer failed. These are separate pages with different outputs.
Instagram Activity Tracking
Both products address more than one-time viewing, but their tracking features require a closer distinction.
DolphinRadar's Recent Follows/Followers tool returned NatGeo Recent Followers and Recent Following data during our browser check. Its free preview is limited; the separate paid plan unlocks the full results and unlimited searches, according to DolphinRadar's product information. DolphinRadar also sells Viewer & Downloader tracking for selected profiles and a separate Social Insights subscription for activity reports. These are distinct plans. A free viewer visit, or purchase of one plan, should not be read as proof that every tracking feature is included.
Lurk's homepage and anonymous-viewer page advertise recent follows, unfollows, alerts, Story viewing, and an activity timeline. The homepage also advertises iOS, Android, and web access. In the supplied screenshot of its @lena result page, Lurk displayed an account header, follower/following figures, grouped recent-follow counts, and a Recent follows section. The individual accounts in that section were blurred, with a Tap to reveal button. In our September 28 web check with @nasa, that button led to a referral offer to unlock 30 days by inviting three friends. This confirms that a free result preview exists, but it does not establish the accuracy of the displayed counts or the completeness of an unlocked follow list.
Lurk's own comparison table claims recently sorted follows, instant push alerts, unlimited tracked profiles, and a full activity timeline. Its Others column refers to unspecified competitors, not DolphinRadar. We did not subscribe or wait through a follow change, so alert speed, history completeness, and paid tracking accuracy remain unverified in this test. Lurk is a real tracking competitor, not merely a Story-viewing site.
If your decision depends on follow-change alerts, run a longer trial with a public account you control. Record a known follow change, the time it appears in each service, whether an alert arrives, and whether the event remains in the history. A single static lookup cannot answer those questions.
Price and Free Access
DolphinRadar publishes free public-content viewing and downloads without an Instagram login. Its Viewer & Downloader plan starts at $6.99/month for one tracked profile, or $69.99/year. The separate Recent Follows/Followers plan is listed at $6/month, with quarterly and annual billing options. Its separate Social Insights plan starts at $4.49/month; new tracked accounts require a data-collection period before reports are ready. Check the specific product and checkout before buying, because these prices refer to different subscriptions.
Lurk describes anonymous public viewing as free to start. Its homepage comparison table displays $1/week. Its separate pricing page says new users receive a discounted first week, that subscriptions renew automatically, and that the full subsequent price varies by region and appears at checkout. It does not confirm $1/week as the continuing web price.
For a concrete US price, the iOS app linked from Lurk's own homepage lists Lurk Premium Weekly at $19.99 and Lurk Premium Yearly at $119.99 in the US App Store as of September 28, 2026. These are US iOS in-app purchase prices, not a verified web checkout price. They may differ by country, store, promotion, or billing channel. We did not buy a plan, and the public web flow did not expose a continuing paid price without proceeding further through checkout.
Which Should You Choose?
- Choose DolphinRadar when you want the broadest public-content result demonstrated in this test, or when you specifically need its separate Recent Follows/Followers tool. Check the plan boundary before paying for ongoing monitoring.
- Choose Lurk when a quick, no-login view of active public Stories is the main job. Its NASA and NatGeo Story results worked in the manual test, and its follow-result page offers a limited preview. Verify profile counts, the terms for unlocking the full list, and paid tracking performance for your own use case.
- Test both over time if follow alerts are the deciding factor. Neither service's long-term alert accuracy was established by the public-profile checks in this article.
Neither service can legitimately reveal private posts or Stories without the account owner's permission. No public-profile viewer should need your Instagram password for these lookups.
Frequently Asked Questions
1. Is Lurk only an Instagram Story viewer?
No. Lurk also advertises recent-follow tracking, unfollows, notifications, and an activity timeline. Our evidence confirmed live Stories for NASA and NatGeo and showed a recent-follow preview with blurred account entries on its @lena result page. It did not validate the unlocked list, paid tracking, or alert timing.
2. Does DolphinRadar require an Instagram login to view public profiles?
No Instagram login was required for the NASA and NatGeo public lookups in our browser test. Paid tracking is a separate decision from basic public viewing.
3. Which tool showed more public content in this test?
DolphinRadar's NASA result exposed more content categories: Stories, Posts, Reels, Highlights, Reposts, and Tagged. Lurk successfully returned live Stories for both accounts. This describes the observed results, not a universal feature guarantee.
4. Can either tool show private Instagram content?
A legitimate public viewer cannot unlock private content. Use only public accounts and treat any claim to bypass Instagram privacy controls with caution.
