Were you downloading the full (new android) version, not the demo? In that case, it was made for the new android, but I guess it went obsolete already in under a year. I replaced the old file with a new one (com.pdrr.fmofull-1.5.9-1786278484-release.apk), though, so please let me know if you got it to work for you.
If you’re still getting an error, there should be a drop-down button or an arrow to let you ‘install anyway.’ Running an older version on a new model shouldn’t cause any issues in this case since it’s an IF and there aren’t many game-like features that could be broken/outdated, it’s just text and images. I tested my older projects on newer models, both IF and VNs, and they were running fine on my end, but if you do run into an issue while playing, do let me know, and I’ll do my best to fix it.







