Cross platform (Android + iOS), fast and nice Mastodon / Pleroma client implemented with B4X (not VBA as written above).
B4X: https://www.b4x.com
Google Play: https://play.google.com/store/apps/details?id=b4a.pleroma&hl=en
APK: https://www.b4x.com/android/files/Pleroma.apk
Apple App Store: https://apps.apple.com/app/b4x-pleroma/id1538396871