
Dex
Monica
Dex for iOS and Android
amiqo
Followup.cc
Hippo App
MeetnGreetMe
Nat is a personal CRM that helps CEOs, founders and consultants to stay in touch with their network by figuring out who they're losing touch with automatically based on their data.

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, Nat App seems to be more popular. It has been mentioned 1 time since March 2021.
Website, pricing, platforms and company facts side by side.
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|
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|---|---|---|
| Website | nat.app | devfinancetools.com |
| Pricing | ||
| Platforms | — | |
| Company | 2019 | 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


We've built a smart algorithm that analyses your data to figure out how in touch you are with your contacts. By looking at the frequency and type of interactions, Nat gets a good idea of who you need to reconnect with! Quick to set up Unlike other relationship management apps, setting up a fully...
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.


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


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


The other bonus is that sometimes a name will pop up and it will encourage me to reach out to them. I technically use nat.app for that kind of thing, but a few times a week some old business connection will pop up and I'll think "Wow, I... Source: almost 5 years ago
Tracking DevFinanceTools since Aug 2026.
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One place for your relationships — impress with thoughtfulness
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Helping you make rational decisions, one calculation at a time.
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Monica is an open-source personal CRM to keep track of your friends and family.
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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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The Dex mobile app brings together your relationships in one place: 📲 Import from your phone contacts, LinkedIn, and 20+ other sources ⏰ Set reminders, leave notes, and keep-in-touch.
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Should you build an internal tool? Or just buy it?
Compare Build vs. Buy Calculator to Nat App or DevFinanceTools: