# ApexCalc vs Tidix: which to pick

> ApexCalc vs Tidix: compare pricing, platforms, categories, launch weeks, upvotes, awards and founders side by side on ProductsFarm, with notes on which to pick.

Canonical: https://productsfarm.com/compare/apexcalc-vs-tidix
Last updated: 2026-11-08

|  | [ApexCalc](https://productsfarm.com/product/apexcalc) | [Tidix](https://productsfarm.com/product/tidix) |
| --- | --- | --- |
| What it is | Free online calculators for medicine, engineering, finance and science | Native system monitor that finds what’s draining your Mac |
| Pricing | Free | Paid |
| Platforms | Web | macOS |
| Categories | Productivity, Education | Developer tools, Productivity |
| Made for | students, professionals, finance teams | mac users |
| Built with | [Tailwind CSS](https://productsfarm.com/tech-stack/tailwind-css) | [Swift](https://productsfarm.com/tech-stack/swift) |
| Upvotes | 14 | 0 |
| Website | [apexcalc.net](https://apexcalc.net/) | [tidix.app](https://tidix.app/) |

## About ApexCalc

ApexCalc is a free web platform that gathers calculators across more than 50 disciplines, including medicine, engineering, finance, science, law, and sports and fitness. The site lists over 11,600 tools, which can be searched or browsed by category and opened in the browser without signing up or installing anything.

Each calculator opens on its own page. The site says its tools include formula logic, sourced citations and links to related tools. It also lists regional finance, tax, mortgage and legal tools for 150 countries, alongside everyday calculators such as BMI and mortgage tools.

The platform is aimed at students, professionals and anyone who needs a quick answer in a specific field. The site states that every calculator is free with no account required. It also describes paid tiers for saved bookmarks, PDF export and API access, but these are marked as coming soon and are not yet available.

## About Tidix

Ever wondered why your Mac’s fans spin up or your battery dies by lunch? Activity Monitor won’t tell you. Tidix will.

A native macOS system monitor built in Swift:

- Every CPU core, GPU and Neural Engine, live
- Power draw per process to find the battery hog
- Top apps over 30 days of history
- Startup items, Bluetooth, disks and network

Private, lightweight, no Electron. Pay once, no subscription.

## Related

- [ApexCalc](https://productsfarm.com/product/apexcalc)
- [Tidix](https://productsfarm.com/product/tidix)
- [More comparisons](https://productsfarm.com/compare)