
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

50 UI Tips
UI Playbook
100 UI/UX Tips
The Startup Way
UI Recipes
UX Management Playbook
Re:Form
Weekly UI/UX tips in your inbox for free

Which is more popular?
Based on our record, UserInterface.io seems to be more popular. It has been mentioned 6 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | devfinancetools.com | user-interface.io |
| Pricing | — | |
| Company | 2026 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


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...
No description of UserInterface.io yet.
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 DevFinanceTools and UserInterface.io. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


Tracking DevFinanceTools since Aug 2026.
SEEKING WORK | Armenia | Remote | Frontend developer My Stack: VueJS 3 & Laravel. HTML/CSS/JS/git/MacOS. UI/UX competency, has written two books and active on twitter: https://twitter.com/vponamariov Github... - Source: Hacker News / about 3 years ago
Maybe the first rule should be ‘physician/quack heal thyself... Then seek feedback’. The only UI/UX newsletter I subscribe to[0] also has a a similar problem, but the advice is usually solid. [0] https://user-interface.io/. - Source: Hacker News / over 3 years ago
I've got a lot of mileage out of following Victor Ponamariov: - https://user-interface.io - https://hundred.user-interface.io <- this is especially good - https://twitter.com/vponamariov. - Source: Hacker News / about 4 years ago
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The documented collection of UI components
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Should you build an internal tool? Or just buy it?
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