Paste actuals, see which simple forecasting method wins.
Before reaching for a complex forecasting model, it's worth checking whether a simple one already does the job — naive (repeat last value), moving average, or a linear trend line. This tool runs all three against a real history and scores them, so the choice of method is based on evidence instead of habit. Sometimes the simplest model wins, and it's worth knowing that before building something more complicated than you need.