One platform.
Every value-investing lens.
From Buffett's 5-pillar verdict to portfolio-level grading, alerts, and the open track record. Applied to 21,000+ stocks across 68 countries, roughly half listed outside the US, refreshed daily, fully documented methodology.
Open any ticker, get the full read.
Three lenses on one stock. The Buffett verdict + open chat against his shareholder letters + a four-investor debate with a skeptic at the table.
Buffett Brain verdict
A 5-pillar verdict on any of 21,000+ stocks across 68 countries - moat, durability, management, valuation, financial health - graded A+ through F with the reasoning written out per pillar.
Ask Buffett
Open a chat about any stock. Answers are grounded in Berkshire shareholder letters 1977–2025 with verbatim quotes and citations, so you see exactly which letter the reasoning came from.
The Boardroom
Four legendary investors - Buffett, Munger, Lynch, Graham - debate the stock with a built-in skeptic. You see where they agree and where they tear each other's logic apart.
Seven investor frameworks. Every stock scored.
Every ticker in the universe is graded against seven explicit value-investing checklists - not a single proprietary snowflake. You see exactly which framework a stock passes and why.
Seven named frameworks
Buffett-Fit, Graham defensive value, Lynch GARP, Greenblatt magic formula, Munger quality, Fisher growth, Terry Smith. Each one is a documented rule cascade - reproducible from the open methodology.
Strategy Fit Scores
A separate A+/A/B/C/D/F grade per framework per stock. A stock that's an A for Buffett can easily be a C for Graham - and that disagreement is where the alpha lives.
11 preset filters + custom builder
Quality compounding, defensive value, dividend aristocrats, momentum, growth - the presets cover the seven investor schools plus four factor styles. Or build your own from 40+ fundamental fields.
Halal Mode
AAOIFI Standard 21 screen. 1,500+ halal-eligible stocks identified by business activity AND financial-ratio thresholds (interest-bearing debt, non-permissible income). One toggle flips the entire app into halal-only.
Compare any stocks, see real peer numbers.
Pick a stock and see its industry peers with real fundamental numbers, not a chart. Or pick three to five tickers and run them through every framework side-by-side.
Compare hub
Pair any number of stocks side-by-side. Revenue growth, ROIC, margins, P/E, P/B, free cash flow - every metric aligned in a single row so a quick visual scan tells you who's winning on what.
Industry peers
Every stock's page shows its closest industry peers with full numbers - revenue, ROIC, P/E, market cap. Free users see counts only; Pro unlocks the full numbers.
Sector percentile ranks
Where this stock ranks within its sector on every key metric - top decile, top quartile, median, bottom quartile. Tells you instantly if a 22% ROIC is excellent or middling for the industry.
Add a stock. We tell you when something changes.
The watchlist is your home base. Every weekday, you get a tight email digest of what changed - verdict flips, score moves, price drops past your threshold, big insider buys, new earnings calls. No spam.
Watchlist
Add any stock to your watchlist with one click. The page shows current price, change, ROIC, market cap, and a Buffett Brain shortcut - nothing else, by design.
Daily + weekly email digest
A clean inbox-ready summary of what moved on your watchlist. Five event types are tracked: price drops past your threshold, score moves, verdict flips, new earnings transcripts, big insider purchases. You pick the frequency.
5-language interface
English, German, French, Spanish, Portuguese - the entire app, including verdicts and email digests. The Buffett analysis itself adapts to the locale; you see the same logic in your language.
From single stocks to your whole book.
The portfolio surface aggregates the same scoring engine across your actual holdings. Capital and Founder's tiers add portfolio-LEVEL signals: a Buffett grade on your whole book, multi-framework matrix, concentration discipline.
Manual portfolio tracker
Add positions with shares + cost basis + purchase date. You get live market value, gain/loss per position, and a same-period comparison against the S&P 500 so you know if you're beating the index or paying for the privilege.
Portfolio Score
One weighted Buffett verdict on your whole holdings - not stock-by-stock. Letter grade A+ through F, color-coded per quality tier, with the per-position breakdown showing exactly which holdings are pulling the score up vs down.
Multi-framework portfolio view
Your book scored against Buffett, Graham, Lynch, and Greenblatt at the same time. A position that's an A for Buffett can be a C for Graham - seeing the disagreement at portfolio scope is exactly where active value-investing concentrates.
Concentration alerts
Buffett-style position-sizing discipline. Per-ticker thresholds at 15% / 25% / 40%, per-sector at 25% / 40% / 60%. When a holding crosses the line, the widget shows it AND quotes the relevant Buffett rule on why the threshold matters.
Your thesis is half the work. The other half is checking it.
Most retail investors write down their thesis once and never revisit it. invest-like prompts you to - automatically - the moment something material changes about the stock you wrote the thesis on.
Decision Journal
Log every position you take with the structured Buffett-style fields: thesis, target price, hold horizon, what-would-change-my-mind. Entry-price + entry-verdict are snapshotted server-side so future-you can't fudge the math.
Conviction journal prompts
When the Buffett verdict on a stock you've journaled flips, /journal shows a banner: 'X theses need review.' One click jumps you to the entry. Your thesis doesn't silently rot.
Pre-earnings briefings
For every upcoming earnings event on a stock you hold, generate a 3-bullet briefing: the single metric to watch, what to listen for on the call, and what specific outcome would flip the verdict. Cached so the briefing on AAPL Q3 is the same for everyone holding AAPL.
Grade-Change Alerts on holdings
The daily digest scans your portfolio_positions too, not just your watchlist. Portfolio-source alerts are prefixed 'HOLDING ·' so they pop visually - you immediately read it as 'a stock I own' rather than 'a stock on my wishlist.'
Every verdict, every return, published openly.
The /track-record page is the receipts. Every Buffett Brain verdict ever issued, with the price on verdict date and the return since. The misses are published with the same prominence as the wins.
Live Buffett verdict accuracy
Average return by grade. A+ vs F return spread. Best and worst calls. Latest verdicts. Every number sourced from buffett_analyses ⨯ historical_prices, recomputed nightly. No hand-picking.
Rule-based scoring backtest
Returns by Buffett-Fit grade and 7-framework consensus across the entire coverage universe. Survivorship bias and look-ahead bias both disclosed - the page tells you exactly what the numbers can and can't prove.
Live model portfolio vs SPY
A 30-stock basket selected by the scoring engine at a fixed entry date, with daily NAV vs SPY plotted forward. Entry timestamps locked server-side so the comparison is unfakeable in either direction.
Try it on a stock you actually own
Free tier includes 3 Buffett Brain verdicts every rolling 7 days, every stock's sector percentile rankings, the full compare flow, and the entire 5-language interface. No card required to start.