
WriteWell
ZoneMinder
Ulysses.app
SpyBuster
Sunflower Labs
Clario
Blurt
Personal space security app, backed by Snowden

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, Haven seems to be more popular. It has been mentioned 11 times since March 2021.
Website, pricing, platforms and company facts side by side.
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|---|---|---|
| Website | guardianproject.github.io | devfinancetools.com |
| Pricing | ||
| Company | — | 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of Haven 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
Walkthroughs and reviews on video.
Haven Review
More videos
No DevFinanceTools videos yet. You could help us improve this page by suggesting one.
How often each product is chosen within a category, 0–100% relative to the other.


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


Haven, available either on F-Droid or Google Play. Source: over 3 years ago
Haven might be what you are looking for. It can activate sound and video recording upon noise, light and vibration. It is in the IzzyOnDroid Repo or has its own repo. Check the project page: Https://guardianproject.github.io/haven. Source: over 3 years ago
Haven is open source. Last updated 2019, but works. https://guardianproject.github.io/haven/. - Source: Hacker News / over 3 years ago
Tracking DevFinanceTools since Aug 2026.
When comparing Haven and DevFinanceTools, you can also consider the following products.

Jumpstart your writing with the world's best templates.
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Helping you make rational decisions, one calculation at a time.
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ZoneMinder is a free and open-source piece of security software that can be used at home or in your business. The software puts you in control of all of your data, and it is exceptionally easy to setup. Read more about ZoneMinder.
Compare ZoneMinder to Haven 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 Haven or DevFinanceTools:

A powerful writing tool for Mac, iPad, and iPhone
Compare Ulysses.app to Haven or DevFinanceTools:

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