Bring your picks.
Build or import your slip. Check the lines and odds before you start.
THE TAIL COMMUNITY
For bettors and cappers.
Follow the picks. Get the receipts.

10research groups
100research checks
One Gradewith the evidence and its limits
FROM A HUNCH TO A CLEARER PICTURE
A useful second opinion shows its work—and its limits.
Build or import your slip. Check the lines and odds before you start.
Review sourced findings and see where the available evidence falls short.
Read your Grade, ask the Doctor, and revisit the saved report.
ONE APP. YOUR RESEARCH TOGETHER.
Research a slip. Talk it through. Keep the full picture.
See the historical evidence, confidence, and gaps behind a result.

Ask follow-up questions with your saved research in context.

Follow other bettors. Keep the posts you follow in one feed.

Return to saved analyses and open the Doctor from a report.

Captured in the iPhone app, October 1–2, 2026. Saved research examples, not live odds or predictions. Tail shows an account’s empty Following feed.
DOUBLE DOSE · 100% RESEARCH UNIT CREDIT
Research units pay for Grades and the Doctor.
The first 1,000 subscribers get a one-time bonus equal to their plan’s monthly research units.
Bonus lasts 30 days from your first payment. Research units pay for Grades and the Doctor; they aren’t money and can’t be bet. Double Dose terms
PLANS & PRICING
Your first Grade is free on iPhone. Paid plans add a monthly research allowance and deeper research. Cancel anytime.
Sign up free. Get 1 free Grade.
Grade my slipLocked for life. $29.99 from Sunday.
1,000 research units per month · Smart depth
Start for $9.99Locked for life. $49.99 from Sunday.
2,000 research units per month · Deep depth
Choose ProLocked for life. $79.99 from Sunday.
4,000 research units per month · Elite depth
Choose EliteSecure web checkout with your BSD app account. New to BSD? Start free on iPhone, then subscribe here. Compare all plans. Prices may vary by region.
CAPPERS
Pick your payout: up to 50% for a year or 30% for life on every bettor you send. Continue with Google or Apple, tap Get my link, and share it. No app account needed first.
Up to 50% of eligible net subscription revenue for each subscriber’s first 12 months, or 30% for their life, web and App Store. Net of fees, taxes, refunds, and disputes. 21+.
AGENT CONNECT
Authorize Claude, ChatGPT, or another MCP client to read your saved BSD research and ask better follow-ups. Pro or Elite.
Logos identify products, not partnerships or verified BSD connections. Other clients depend on their own MCP support.
EXPLORE BETSLIP DOCTOR
A MORE CONSIDERED APPROACH