“Initial MVP took around two to three months maybe… I use Cursor a lot, but I'm very specific which files to touch and don't let the AI just go rogue basically.”

Ship the MVP in 2-3 months and keep the AI on a tight leash — specific files only

The first version shipped in two to three months by scoping tightly around a tracker plus a custom workout engine. AI coding tools accelerated the work, but only when pointed at specific files rather than allowed to roam — autonomy is what produces unmaintainable sprawl.