Tap "Install anyway" (on Samsung/Sony). If the button is greyed out, use the ADB command:
adb install --bypass-low-target-sdk-block yourfile.apk
Let’s be transparent. Using a FlipaClip Premium APK Old Version is technically piracy. The developers at Visual Blast (the creators) deserve credit for their work.
However, there is a niche ethical argument: If you already paid for the premium unlock back in 2018 (one-time purchase), but the new update removed that purchase and moved to a subscription—installing an old APK that respects your original license key is considered "abandonware" preservation.
Recommendation: If you use an old version and enjoy it, consider buying the current subscription or buying the creators a coffee via their Patreon. This ensures future development for the next generation of animators.
FlipaClip v2.8.0 requires only Android 4.4 (KitKat) and 50MB of RAM. The latest v3.5 requires Android 8.0+. For students using old school tablets, the old version is the only functional one.