It’s the same on Android.

Waze isn’t FOSS.

You’ll need to first download the relevant section of the map downloaded to be able to search it, though.

I am, and have been, relying on Transportr in multiple European countries, and it’s been a joy. Only problem I’ve had is that additional information from the provider (temporary changes on the route etc.) isn’t there, but that’s no biggie. Sad to hear it’s been unmaintained, hoping it’ll keep working. Though, forking and updating the APIs for future broken providers wouldn’t be too troublesome, right?

There’s also Öffi which was last updated on F-Droid 16 days ago. It does pretty much the same job as Transportr, though it visualises the overview of journeys in a different graphical way than the list of Transportr, which is why I liked Transportr better. However, Öffi has some other neat features that Transportr doesn’t have, such as listing the upcoming departures for all nearby stations/stops at once, based on your location.

If you ever need a 3D map on the phone, have a look at the OSM-based Magic Earth. You’ll have to select a map style (in the General settings) with elevation, such as “Satellite 2 with Elevation and Streets”.

Unfortunately, the app is closed-source…

According to Wikipedia:

HarmonyOS NEXT (Chinese: 鸿蒙星河版; pinyin: Hóngméng Xīnghébǎn) is a proprietary distributed operating system and a major iteration of HarmonyOS, developed by Huawei to support only HarmonyOS native apps. The operating system is primarily aimed at software and hardware developers that deal directly with Huawei. It does not include Android’s AOSP core and is incompatible with Android applications.

“My bike is too fast for GPS” :D

I think VLC skips a number of seconds using the arrow keys when the window is in focus, though I’m not sure if the duration can be changed?

I think OpenTracks could be a good lightweight alternative for simply saving tracks.

You should also look into the polar pattern of the mic you’re getting.

You’ll probably want a dynamic mic with a cardioid, hypercardioid, supercardioid or subcardioid pattern.

Though it isn’t open source, I want to mention that iZotope RX is the industry standard for audio cleanup in post. Maybe by knowing its name and reading about its features, you’ll be able to write more specific search prompts to find the best (F)(L)OSS alternatives for your situation.