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Is Time and Space Complexity safe to install?

Time and Space Complexity asks for 64 browser permissions and declares no blanket site access. We do not audit code and we do not judge intent; what we can show is what the listing declares and whether that has changed while we have been watching.

Time and Space Complexity

Chrome extension by stevesiddu49 · Productivity · Education

Open in the Chrome Web Store
What the developer says, and 4 screenshots

Loading from the Chrome Web Store. Open the listing if it does not appear.

At a glance

Facts, not a score: an ad blocker needs every page and a theme needs nothing, so one number would be wrong about both. Each fact links to its detail.

Site access
No site access
Data collection
Declares it collects none
Publisher
No store badges
Audience
265 users · 3.2/5

What data it declares

The developer declares that it does not collect or use your data.

The developer also certifies that your data is not sold to third parties outside approved uses, not used for purposes unrelated to the extension's core function, and not used to decide creditworthiness or lending.

The listing links to a privacy policy.

This is the developer's own declaration in the Chrome Web Store. We cannot check it against what the extension does.

What Chrome asks you to allow

When you add it, Chrome asks you to allow it to:

Derived from the manifest by Chrome's documented rules; the dialog's exact wording depends on your Chrome version and language. Chrome asks again if an update requests more.

What it can reach

No site access is declared in the manifest, so it cannot read the pages you open on its own.

Routine for an extension

Pages it runs its code on

It runs its own code on specific pages only: the first 50 site patterns we keep.

Show the remaining 47
  • https://www.hackerearth.com/* only www.hackerearth.com
  • https://codeforces.com/* only codeforces.com
  • https://github.com/* only github.com
  • https://stackoverflow.com/* only stackoverflow.com
  • https://www.codechef.com/* only www.codechef.com
  • https://www.topcoder.com/* only www.topcoder.com
  • https://coderbyte.com/* only coderbyte.com
  • https://www.codewars.com/* only www.codewars.com
  • https://www.spoj.com/* only www.spoj.com
  • https://www.codingame.com/* only www.codingame.com
  • https://exercism.io/* only exercism.io
  • https://www.interviewbit.com/* only www.interviewbit.com
  • https://www.codeproject.com/* only www.codeproject.com
  • https://www.coderwall.com/* only www.coderwall.com
  • https://www.codementor.io/* only www.codementor.io
  • https://www.codesignal.com/* only www.codesignal.com
  • https://www.urionlinejudge.com.br/* only www.urionlinejudge.com.br
  • https://practice.geeksforgeeks.org/* only practice.geeksforgeeks.org
  • https://edabit.com/* only edabit.com
  • https://codeforces.org/* only codeforces.org
  • https://www.codegrepper.com/* only www.codegrepper.com
  • https://www.coderbyte.com/* only www.coderbyte.com
  • https://www.codingninjas.com/* only www.codingninjas.com
  • https://www.algoexpert.io/* only www.algoexpert.io
  • https://www.techgig.com/* only www.techgig.com
  • https://www.projecteuler.net/* only www.projecteuler.net
  • https://www.hackthissite.org/* only www.hackthissite.org
  • https://www.kaggle.com/* only www.kaggle.com
  • https://www.freecodecamp.org/* only www.freecodecamp.org
  • https://www.codecademy.com/* only www.codecademy.com
  • https://www.coursera.org/* only www.coursera.org
  • https://www.udemy.com/* only www.udemy.com
  • https://www.pluralsight.com/* only www.pluralsight.com
  • https://www.edx.org/* only www.edx.org
  • https://www.khanacademy.org/* only www.khanacademy.org
  • https://www.udacity.com/* only www.udacity.com
  • https://www.codeavengers.com/* only www.codeavengers.com
  • https://www.codeschool.com/* only www.codeschool.com
  • https://www.dataquest.io/* only www.dataquest.io
  • https://www.datacamp.com/* only www.datacamp.com
  • https://www.teamtreehouse.com/* only www.teamtreehouse.com
  • https://www.sololearn.com/* only www.sololearn.com
  • https://www.w3schools.com/* only www.w3schools.com
  • https://www.learn-c.org/* only www.learn-c.org
  • https://www.learn-js.org/* only www.learn-js.org
  • https://www.learnpython.org/* only www.learnpython.org
  • https://www.learn-java.com/* only www.learn-java.com

We keep the first 50 patterns of a list; the manifest may declare more.

A content script is code the extension injects into pages matching these patterns. On those pages it can read and change what you see, whether or not a host permission is listed above.

How usual this is for its category

In Productivity · Education, 17% of extensions ask for access to every site. This one: No site access.

The typical extension there declares 3 browser permissions; this one declares 64 browser permissions.

Counted over the live extensions of the same category after our latest full pass of the store. A share is context, not a verdict: what is normal depends on what the extension is for.

Who uses it and how it is kept up

265 users

Users
-18 since 31.08
261-296 · 36 readings
  1. 2026-08-31283
  2. 2026-09-02282
  3. 2026-09-03287
  4. 2026-09-05292
  5. 2026-09-06294
  6. 2026-09-08292
  7. 2026-09-10287
  8. 2026-09-13280
  9. 2026-09-15278
  10. 2026-09-16280
  11. 2026-09-21282
  12. 2026-09-25290
  13. 2026-09-27293
  14. 2026-09-28296
  15. 2026-10-04284
  16. 2026-10-08279
  17. 2026-10-09280
  18. 2026-10-11282
  19. 2026-10-13278
  20. 2026-10-16279
  21. 2026-10-17276
  22. 2026-10-18274
  23. 2026-10-19278
  24. 2026-10-20271
  25. 2026-10-21261
  26. 2026-10-22274
  27. 2026-10-23267
  28. 2026-10-24264
  29. 2026-10-25266
  30. 2026-10-28269
  31. 2026-10-29271
  32. 2026-10-30273
  33. 2026-11-01273
  34. 2026-11-04269
  35. 2026-11-06264
  36. 2026-11-07265

What the store shows

The store shows none of its badges on this listing. Most listings carry none.

Has it asked for more over time?

This is the question a permission list on its own cannot answer. An extension that shipped narrow and widened later is a different proposition from one that always asked for the same thing.

The permissions this extension requests have not changed since we started watching it.

Who publishes it

stevesiddu49. This listing has been in the store since 2024-06-26 and was last updated on 2024-06-26.

Similar extensions that ask for less

Listings close to this one in what they say they do, which declare less reach. Less reach is not a verdict on either: compare what each needs for the job.

  1. ComplexityCheck No permissions at all · No permissions declared 2 users
  2. Algorithms Explorer No permissions at all · No permissions declared 4 users (last published figure)

How to check or remove it in Chrome

  1. Type chrome://extensions in the address bar and find the extension in the list.
  2. Open its details. The site access setting shows where it can run; set it to run only on click and it reaches a page only after you press its icon.
  3. To uninstall it, choose Remove on the same page.

Questions people ask

What can Time and Space Complexity access?
No site access is declared in the manifest, so it cannot read the pages you open on its own. It declares 64 browser permissions.
What data does Time and Space Complexity collect?
The developer declares that it does not collect or use your data. This is the developer's own declaration in the Chrome Web Store. We cannot check it against what the extension does.
Has Time and Space Complexity asked for more permissions over time?
The permissions this extension requests have not changed since we started watching it.
Does Time and Space Complexity publish a privacy policy?
Yes, the store listing links to a privacy policy.

We read the public store listing up to 2 times a day and keep what it declared. We do not install the extension, do not audit its code, do not judge its intent and publish no contact details for its developer. Last read on 2026-11-07.

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