Migrating .NET MAUI from Mono and Tuning Mobile Performance | Community Feed

With CoreCLR now the default runtime for .NET MAUI on Android, iOS, and Mac Catalyst, mobile apps gain Tiered Compilation, ReadyToRun, and Profile-Guided Optimization — but the transition introduces real-world challenges that need addressing.

What you’ll learn

Why CoreCLR replaces Mono for .NET MAUI and what that means for startup times, GC behaviour, and diagnostics
Setting up a dual-runtime targeting strategy — Mono for Debug (inner-loop debugging), CoreCLR for Release (production performance)
Configuring CoreCLR’s Garbage Collector for mobile hardware using runtimeconfig.template.json — Workstation GC, RetainVM, and HeapHardLimitPercent
Using dotnet-trace and dotnet-counters directly on physical Android devices over USB for desktop-grade profiling
Understanding the key differences between Mono and CoreCLR compilation engines, GC architectures, and diagnostic tooling