
HackerRank
Project Euler
Codewars
Exercism
CodeForces
interviewing.io
Coderbyte
Practice and level up your development skills and prepare for technical interviews.

Altstore
Cydia
Apple App Store
Hydia
MacMenuBar
AppValley
TweakBox
Safe and trustworthy alternative app store for iOS

Which is more popular?
Based on our record, LeetCode seems to be a lot more popular than BuildStore. While we know about 544 links to LeetCode, we've tracked only 8 mentions of BuildStore.
Website, pricing, platforms and company facts side by side.
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| Website | leetcode.com | builds.io |
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What each product offers, as listed by its team.


Possible disadvantages
Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
Overall verdict
Why this product is good
Recommended for
Tech-savvy users comfortable with potential risks, those seeking unique apps or games not available on the App Store, and individuals looking to customize their iOS experience beyond Apple's restrictions.
Walkthroughs and reviews on video.
Is A LeetCode Premium Subscription Worth It?
More videos
How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using LeetCode and BuildStore. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


LeetCode is a renowned online platform offering a compendium of coding challenges that enable software developers to sharpen their programming prowess, facilitating their preparation for technical interviews. This...
What are LeetCode and LeetCode alternatives good for?LeetCode💡Interested in leveling up your career? Apply to the Formation Fellowship...
In the quest for coding excellence, developers often seek platforms that not only challenge their skills but also make the learning process engaging and fun. While Leetcode has been a staple in the coding community...
I've been using BuildStore for more than 2 years now, and I can recommend this site as a great place to get any app you need. There are literally hundreds of them! You will never find so many apps on other sites.
It’s an interesting site, it was recommended to me by my friend, who also likes retro games. I’ve been using it for two months and really like it. They are not cheap, don’t get me wrong, but the site gets the job...
The site is reliable and trustworthy. I’ve been using it for a month and really love the games that they have. They are on the pricy side, but I probably would keep the membership, since getting all those apps...
Recommendations tracked on public social media and blogs since March 2021.


General Coding Assessment (GCA): the harder of the two, but manageable with preparation. It's done on CodeSignal, either in person or online. To prepare, practice DSA questions on competitive programming sites like LeetCode, Codewars,... - Source: dev.to / about 1 month ago
Category Tool URL How I used it General AI assistant ChatGPT Https://chatgpt.com Breaking down concepts, simulating interviewers, reviewing answers AI writing / reasoning Claude Https://claude.ai Refining behavioral stories and... - Source: dev.to / 4 months ago
Plain BST. Fine when input is random or the problem doesn't require worst-case guarantees. Tree problems on LeetCode typically assume balanced input and don't ask you to maintain balance yourself. - Source: dev.to / 4 months ago
> Of course Apple would never go for that They do in EU, because they were forced to. AltStore PAL https://altstore.io/ Buildstore https://builds.io/ Aptoide https://en.aptoide.com .. And so on. - Source: Hacker News / about 1 year ago
Grab a pre paid card I’ve been using https://builds.io/ for years since go released basically and have never had an issue. Source: over 3 years ago
This is the site I have used since about 2018. Worked on my iPhone 8s+. I have a 12promax now. You basically pay for a subscription to a plethora of different apps and emulators, and it’s run officially so Apple doesn’t revoke your... Source: over 4 years ago
When comparing LeetCode and BuildStore, you can also consider the following products.

HackerRank is a platform that allows companies to conduct interviews remotely to hire developers and for technical assessment purposes.
Compare HackerRank to LeetCode or BuildStore:

A home for apps that push the boundaries on iOS
Compare Altstore to LeetCode or BuildStore:

Project Euler is a series of challenging mathematical/computer programming problems that will...
Compare Project Euler to LeetCode or BuildStore:



Install apps on your iDevice via the App Store.
Compare Apple App Store to LeetCode or BuildStore: