I have looked for something similar. There are a number of spaces where FOSS project lists are maintained, but they are often focused on a singular topics like 'privacy' or something akin, and they aren't often parts of larger lists that can be sorted based on the conditions you mentioned above.

The closest thing, if you are interested in other possible tools that might help: Alternative.to, a crowdsourced software searching tool, which has a means of filtering to show only, say, open source projects, or sort by tags that denote stacks used, languages used, etc. (see screenshot of tags I added). It has been useful enough for my own needs when looking for what you've been looking for.

Either way, best of luck! I haven't been able to find something yet, myself.

Tesla, himself, is giving a gentle thumbs up from his grave.

Gotta get those 3 sisters goin'

TL;DR use FF

Top comment, should be pinned. We need a gaggle of these. A gagglebyte.

Watch the video in her post associated with this for better context. Her pause on this does not seem to be a bad thing.

TrailSense, an easy to use, comprehensive wilderness tool.

The goals of the developer are fun to consider:

Goals

• Trail Sense must not use the Internet in any way, as I want the entire app usable when there is no Internet connection

• Features must provide some benefits to people using the app while hiking, in a survival situation, etc.

• Features should make use of the sensors on a phone rather than relying on stored information such as guides

• Features must be based on peer-reviewed science or be verified against real world data

Likewise, the features being developed under those goals are great for getting outside:

Features

• Designed for hiking, backpacking, camping, and geocaching
• Place beacons and navigate to them
• Follow paths
• Retrace your steps with backtrack
• Use a photo as a map
• Plan what to pack
• Be alerted before the sun sets
• Predict the weather
• Use your phone for astronomy
• And more

"We did the back-of-napkin math on what ramping up this experiment to the entire brain would cost, and the scale is impossibly large — 1.6 zettabytes of storage costing $50 billion and spanning 140 acres, making it the largest data center on the planet."

Look at what they need to mimic just a fraction of our power.

Yah. The prompt 'engineers' don't seem to be skilled outside anything but prompt engineering, and it seems weird that even basic tools of the trade, so to speak -- let alone Googling how to accomplish it -- seem to be tough for them to manage.

This is :: chef's kiss ::

Maybe against the grain, here, with all the comments saying No, but: If you were interested in trying something out, I would give Hypatia a go. It's a FOSS-based app, available on F-droid. It's basically a ClamAV front-end. Pulls from their signature lists for Android, alongside other more general AV signature lists. Just an option.

A chemical compound causes the cloth to turn blue when polishing an iPhone, green when polishing an Android. It's only a subtle difference.