.
… or an app like strata?
well
apps are free
i would look at that first
as well as things like simple wired bike computers like cateye enduro and velo
wireless i do not like - just one more battery to f* with
i would buy cateye from amazon, not some no name brand from ali, just to save $3
Sorry, had autocorrect kick in. I meant strava
Longtime recumbent cyclist here. My mantra is KISS and frugal. I have my standard wired computer calibrated precisely so that I get a accurate cumulative mileage reading. When I rode with a friend who used his cell phone (probably an I phone) our readings were close but not the same even though we had traveled the same course together. I know mine was right because I checked it against actual distance over a 5 mile course. Our main streets are exactly a mile apart so it is easy to look at the reading at the beginning of a 5 mile leg and read it again at the same point 5 streets away. If calibrated correctly, the difference will be 5 miles. It is.
Surprisingly, even the most basic bike computer is highly accurate if you enter the correct reading for the tire circumference in millimeters. It is simple. Tie a thin string around the tire where the magnet is located. Add some ink or food coloring to the string and ride the bike a couple of revolutions of the wheel on a cement sidewalk. The distance between the marks on the sidewalk is the circumference value you use. I’ve tried both wired and wireless computers on my recumbent trike. While the wireless version worked fine on a regular mountain bike, it would not record a display on the trike. Something on the frame interfered with the signal. It’s a little nicer without wires but if you properly run the wires it works just as well. My current computer is more than a decade old. Here is one I have given away as gifts. It is available worldwide and the price for the wired version in the US is under $10. It has the same functions you wish to use.
There are lots of wireless versions on eBay from Chinese sellers who probably ship to Finland, Here is one that is USB rechargeable and sells for $15 shipped to the US Bike Backlight Cycle Speedometer USB Rechargeable M6H4 | eBay
I wouldn’t rely on the temperature reading for a bike computer. It is too reliant as to being in the sun or in the shade, Same thing happened in Death Valley National Park a couple of days ago when the temperature reading at the visitor’s center was 122 degrees F. The caveat was that the reading was taken in the sun. Official temperature readings are always taken with the thermometer in the shade.
yes apps get speed from gps and the on board accelerometer in a phone
a gps computer, it might also use a wheel sensor
gps speed can be inaccurate
I kinda like using the app because it’s no extra accessory on the bike and I can change bikes etc and the app is linked to me not the bike (but i must have phone of course)
up to you
but now the $700 phone gets vibration, rain, heat, sun [can;t see display]]
instead of the $30 bike computer that you can always see and is waterproof
and it might break if you wreck the bike
have to get a mount for it
have to constantly run battery and display
I recommend the XOSS G+ with the wheel sensor at $40 US it is worthwhile.
The wheel sensor ($5 more) will provide a more accurate speed.
I bought mine from Fastech during some hyped up sale earlier this summer.
I have and use the XOSS G+, I also have a Garmin Instinct watch (hundreds USD, received as gift).
I bought the XOSS G+ to easily read my speed, distance, while riding.
I enjoy my Instinct watch however I have to let go the handle bar to read my speed which I don’t like to do.
So I bought the XOSS G+ , I was able to pair the XOSS with my Garmin wheel sensor.
When I ride I use both The XOSS and Garmin Instinct simultaneously, (the wheel sensor sends info to both devices) the data from both devices is spot on very little discrepantly.
I don’t use the Strava app so I can’t comment on that.
The XOSS instructions where not well written, but I got everything to work.
If you get the XOSS , you will also have to download the XOSS app to your phone which I also did.
These XOSS GPS computers will not give you turn by turn directions , units with that feature cost much more.
My gripe(s) with the XOSS is the amount of time to pick up a GPS signal, it is slow compared to my Garmin Instinct.
The included handle bar mount is cheesy, I will have upgrade when it ultimately breaks.
Good luck
I assume you have a smartphone.
There is a few cycling apps should suit your needs without spending extra $$ for doubtful additional gear.
Mike
Cateye Velo 7: I bought it for 12 euro on amazon.de, for a family member too.
Speed, distance, average, total dist, time etc. No background light, no temperature. Cable is more reliable than cheap wireless bike computers. GPS speed is not as accurate as pulse measured speed. Auto starts when you start riding, screen clearly readable in direct sunlight. No useless calory estimate function.
100% agree +
The XOSS works without a wheel sensor from the GPS , it will track your movement from one point to another and compute your speed , IDK how accurate trees, tall buildings, block or reflect GPS signals - possibly giving false data.
Black numbers against a grey background I haven’t found a backlight function
You cannot customize the display
No temperature function,
There are a few you tube reviews Review
I started with a small cheap cateye computer. When I switched to the app I just kept the phone in my pocket. It made me realise how much of a “clock-watcher” I was with the cateye and started enjoying the ride more since I was less concerned with the stat’s during the ride.
^ This.
My phone is almost always going to be in my pocket when I’m riding, anyway. Plus with GPS, you get lots more post-ride analysis (was that really a shortcut? Where did I make a wrong turn? etc.). The Strava app is going to just puke and lose 5-10% of your rides, at least on any android phone I’ve ever used. MapMyRide was even worse. But 90% is a good solid A, even without a curve. Especially for the price.
I do a lot of road biking and if I were in the market for a bike computer, I would go with a Cateye Padrone. If something more compact is desired, then a Cateye Strada. I have always found Cateye products economical and very intuitive. FYI, most bike computers will include a small magnet to attach to a spoke as well as a sensor which is attached to a fork. The magnet is almost always secured with a screwdriver, and the sensor with some zip ties.
Nice!
When I bought my XOSS I wasn’t aware of the GEOID CC400 
the two are similar, but GEOID has somewhat more features
temperature is never accurate from a cycle computer—forget that one!
better to get that from weather app on your phone
the apps can i think do gps things [speed, distance] without a data connection
though obvs they need to run their gps chip
and the app probably will ‘’need’’ internet to track you for merchandising and spamming you later
wle
I do not run the app while cycling.
With the XOSS app, what I do is after I finish my ride I turn on the app and sync the data from the computer to the phone via bluetooth.
After the data is stored in the phone you can analyze.