HackerRank
Real Dev
Daily Coding Problem
CodinGame
Frontloops
Codewars
Code Racer
No nonsense, real world programming challenges

Omni Calculator
calculator.net
Build vs. Buy Calculator
DeveloperToolStack
DevNestTools
DevTools Advanced
DevTools.fit
Free, no-signup calculators for the money side of building software and freelancing

Which is more popular?
Based on our record, hackattic seems to be more popular. It has been mentioned 3 times since March 2021.
Website, pricing, platforms and company facts side by side.
|
h
hackattic
|
|
|
|---|---|---|
| Website | hackattic.com | devfinancetools.com |
| Pricing | — | |
| Company | — | 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.

No description of hackattic yet.
DevFinanceTools is a collection of free, no-signup calculators for the money side of building software and freelancing. Everything runs in your browser — no account, no tracking beyond basic page-view analytics — and every tool shows its formulas and benchmarks so you can check the maths...
What each product offers, as listed by its team.

Possible disadvantages
How often each product is chosen within a category, 0–100% relative to the other.

Share your experience with using hackattic and DevFinanceTools. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.

I am aware of few of the resources which I've listed down below, will appreciate if you guys can share bit more. - https://hackattic.com/ : Interesting programming Problems. - Source: Hacker News / about 3 years ago
Also check out https://hackattic.com/ it has some really fun problems. - Source: Hacker News / about 4 years ago
What sort of programming would you like to do? Any real world challenges you are looking to solve? For practice “challenges” I really like https://hackattic.com/. Source: over 5 years ago
Tracking DevFinanceTools since Aug 2026.
When comparing hackattic and DevFinanceTools, 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 hackattic or DevFinanceTools:

Helping you make rational decisions, one calculation at a time.
Compare Omni Calculator to hackattic or DevFinanceTools:


Online calculator for quick calculations, along with a large collection of calculators on math, finance, fitness, and more, each with related in-depth information.
Compare calculator.net to hackattic or DevFinanceTools:

Get exceptionally good at coding interviews
Compare Daily Coding Problem to hackattic or DevFinanceTools:

Should you build an internal tool? Or just buy it?
Compare Build vs. Buy Calculator to hackattic or DevFinanceTools: