Methods
Ranking is never in-sample fit. We use a rolling-origin MASE score and always keep naive baselines for Forecast Value Added.
Free
Core catalog
Naive, seasonal naive, drift, moving average, SES, Holt, damped trend, Holt–Winters (additive / multiplicative), Croston, SBA, TSB, classical decompose, tslm, bounded ARIMA / SARIMA.
Pro
Advanced
Theta, TBATS-lite, piecewise trend + Fourier (Prophet-style), GARCH(1,1) on returns, ensemble, ETS auto. Soft-locked on Free so you can see the names.
Copy in the add-in: “best supported among candidates on this series.” We never claim the true model.