Research doesn't happen in neat daily portions — some days you run one test, some days twenty. So the Lab's flat daily cap is gone, replaced by a wallet of credits that saves your quiet days for your busy ones.
The rule fits in a sentence: every backtest costs one credit. Your balance sits right under the Run button as a small health bar — what you have over what the wallet holds — so there's never a surprise.
Credits arrive on two rhythms — a small daily top-up at your local midnight, and a bigger monthly grant with your plan. Skip a few days and the wallet quietly catches up when you're back. Unused credits pool up to a cap instead of vanishing at sunrise — that's the whole point. A quiet week becomes ammunition for a heavy Saturday.
On the free plan that's 10 a month, 3 a day, a wallet of 30 — and paid plans scale the same shape up to 500 / 100 / 1,500.
Credits meter one thing only: pressing Run. Saved cards reopen for nothing, the guides stay open to everyone — and even without an account there are a few runs a day to play with. Spend them well.