Twenty-one megabytes. That number does more work than any badge. When the Tigerexch apk finishes downloading, open your phone's downloads list and look at the number beside it; 21 MB means you have the same build we put on our own test phones, and a figure far away from that means you should stop and ask the counter before tapping install.
Why does this matter so much? Because search results for Tiger Exchange APK files include affiliate sites, mirrors and pages that simply repackage whatever they found. One affiliate site lists Android 5.0 and 1 GB of RAM as its minimum. We could not verify that claim, so we do not repeat it as ours.
What we can vouch for is narrow and specific. One build, one size, two Android versions tested, one link that comes from a WhatsApp chat you started. Is there a Play Store copy? We do not claim one, and the reasoning sits on the Tiger Exchange APK safety and tigerfair.co page.
At 21 MB the file is small enough (mobile data or Wi-Fi, either is fine) that there is little reason to hunt for a lighter, unofficial copy of Tiger Exchange.