
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

Android
LineageOS
CalyxOS
GrapheneOS
Ubuntu Touch
Mobian
postmarketOS
/e/ is a fork of LineageOS that aims to be completely free of everything Google.

Which is more popular?
Based on our record, e.foundation /e/ seems to be more popular. It has been mentioned 24 times since March 2021.
Website, pricing, platforms and company facts side by side.
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|---|---|---|
| Website | devfinancetools.com | e.foundation |
| 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 e.foundation /e/ yet.
What each product offers, as listed by its team.


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


No analysis of DevFinanceTools yet.
Overall verdict
Why this product is good
Recommended for
How often each product is chosen within a category, 0–100% relative to the other.


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


We have no reviews of DevFinanceTools yet. Be the first one to post
/e/ OS is completely open-source and has been developed by the non-profit /e/ Foundation which is based in France. Currently, it supports more than 240 smartphone models which include popular Samsung phones and some...
/e/ is in active development and you can try to install it on a range of devices already. You can even buy refurbished devices preinstalled with /e/. That is one of the several ways of supporting the /e/ project.
Recommendations tracked on public social media and blogs since March 2021.


Tracking DevFinanceTools since Aug 2026.
Yes and it has already been done: https://e.foundation/. - Source: Hacker News / about 1 year ago
You might also check out /e/OS - https://e.foundation/ It's less hardened than Graphene, but more user-friendly (IMHO) and similarly avoids Google spyware. - Source: Hacker News / almost 2 years ago
> ...like LineageOS. But installing it is so difficult that only 1% of people have the technical know how to even attempt it... Aside: there is also /e/OS (or MurenaOS - their naming is inconsistent). It is basically LineageOS that... - Source: Hacker News / over 2 years ago
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Helping you make rational decisions, one calculation at a time.
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Android is an open source mobile operating system initially released by Google in 2008 and has since become of the most widely used operating systems on any platform.
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Online calculator for quick calculations, along with a large collection of calculators on math, finance, fitness, and more, each with related in-depth information.
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Operating system for smartphones and tablet computers, based on the Android
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Should you build an internal tool? Or just buy it?
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Privacy-focused operating system for smartphones based on Android and microG
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