FAQ
Frequently asked questions
Everything you need to know about what PriCalc is, how it works, and what it doesn't do.
Is PriCalc a picks service?
No. PriCalc does not give picks, recommendations, or advice on what to bet. It's a research tool that shows you how often a prop has hit historically — and how confident you should be in that number based on sample size. What you do with that context is entirely your call.
What sports does PriCalc support?
NBA is live now. MLB and WNBA are coming soon. PriCalc is building into a multi-sport prop research and intelligence platform — NBA is where it starts.
Are these results predictions?
No. PriCalc outputs are historical frequencies — not forecasts. A range of 60%–74% means that based on past games, we estimate the prop's underlying hit rate is somewhere in that band. It does not mean the prop will hit tonight. Player performance is volatile, and past data is one input among many.
What data does PriCalc use?
PriCalc pulls NBA player game log data from external data providers (including API-Sports and SportsDataIO as a fallback). Data is ingested on a regular schedule and stored in a PostgreSQL database. Playoff game data is tracked separately and available as a filter.
What is Range Radar?
Range Radar is a Pro+ feature that ingests tonight's DraftKings player prop lines every morning and runs the full PriCalc analysis pipeline on them automatically. You open Range Radar, and the slate is already pre-analyzed — no manual entry needed. You can filter by team, stat type, or direction, and click any card to run a deeper analysis.
What is Ask Pri?
Ask Pri is a sports research assistant built on GPT-4o with live web search. You can ask it about today's injury reports, lineup changes, rotation trends, usage patterns, and general NBA context. It will not give you picks or predictions — its job is to help you gather context before you build your analysis. Pro users get 75 questions/month; Pro+ users get 300.
Why do playoff samples get smaller?
In a regular season, a player might appear in 70+ games. In a single playoff round, there are at most 7. Filter to 'First Round only' for a specific player and you might have 15–25 games total across multiple playoff runs — and that's if they've been in the league long enough. Smaller samples mean wider uncertainty ranges and more cautious interpretation.
What does the small-sample warning mean?
When a filtered sample has fewer than 15 qualifying games, PriCalc shows an amber warning. This doesn't mean the result is meaningless — it means the range is wider and you should treat the data as a signal rather than a verdict. The math still runs; it just tells you when to be more careful.
What is a Wilson Score Interval?
It's the statistical method PriCalc uses to calculate the probability range. Instead of showing a raw hit rate (e.g., '60%'), it shows a range that reflects how confident the estimate is given the sample size. Fewer games = wider range. More games = tighter range. This prevents the false precision that comes from treating small samples as definitive.
What is Empirical Bayes shrinkage?
When sample sizes are tiny, raw percentages can mislead. A player hitting a prop 3 of 3 times shows as 100% — but that's probably not their true rate. To keep small filtered samples from producing extreme numbers, PriCalc pulls the filtered estimate toward the player's own full-season rate. The smaller the sample, the more weight goes to the season baseline; as the sample grows, the season anchor fades. Statisticians call this Empirical Bayes shrinkage — we call it being honest about how much to trust a small window of data.
Who is PriCalc for?
PriCalc is built for prop bettors who want data behind their decisions. NBA is live now, with more sports coming. You don't need to be a statistician — but you should be comfortable with the idea that historical frequency is useful context, not a guaranteed outcome. If you're looking for someone to tell you what to bet, this isn't that tool.
How often is data updated?
Season data is updated regularly throughout the NBA season. Range Radar's daily slate data is ingested each morning from DraftKings. Playoff game data is tracked and flagged separately so you can analyze postseason performance independently from regular season.
Can I cancel my subscription anytime?
Yes. Subscriptions are monthly. You can cancel at any time from the billing page — your access continues until the end of the current billing period.
What are the tiers?
Free: 5 prop analyses per day, core features. Pro ($11.99/month): unlimited analyses, context filters, 75 Pri questions/month. Pro+ ($24.99/month): everything in Pro, plus Range Radar and 300 Pri questions/month.