The pairs engine does the heavy lifting.
Every market close, PairSync rebuilds its universe, filters on Engle-Granger cointegration, Hurst and half-life, backtests what survives, and ranks it on a 7-factor composite. You research the leaders — in the browser Terminal or on iOS.
Research terminal. Not a broker. No card required for the preview.
US · ASX · NSE · EU · Crypto · Universe rebuilt nightly after each close · Research terminal — no execution.
5 markets covered · 4 hard filters every night · 7 factors in the composite score.
Screener → Spread → Alerts → Journal.
- 01 Screener — Ranked Market Leaders, not raw tickers. Nightly hard filters plus composite ranking — the same rules for everyone.
- 02 Spread — See the spread the way the engine does. Z-score path, half-life, hedge ratio. Parameters freeze when a signal fires, so the chart you studied is the chart the signal keeps.
- 03 Alerts — Signal-state changes, not noise. State transitions per watched pair — thresholds are the frozen calibrated ones.
- 04 Journal — Your research record. Log observations and exports for your own analysis workflow.
Tonight's survivors, ranked.
US, European, Indian, and Australian equities, plus crypto perps on Hyperliquid. HIP3 RWA markets — indices, currencies, bonds and more — coming soon.
Illustrative rows — open the Terminal for the current ranked universe.
Rebuild → Filter → Rank → Freeze.
The engine runs the same rules for everyone. Your edge is the research you do on top.
No iPhone? Start at the Terminal: go to terminal.pair-sync.com in any browser, subscribe via Stripe for $49.99/month (no Apple ID, no App Store), and get the full scored universe immediately — top 200 pairs per country, all 7-factor scores, custom watchlists, live Z-scores, export, and automation.
- Rebuild — Every market close, the engine rebuilds its candidate universe from scratch. Nothing carries over on reputation — last night's leaders re-qualify tonight or drop out.
- Filter — Hard statistical filters cut the candidates: Engle-Granger cointegration, Hurst exponent, half-life, and a completed backtest. A pair that fails any one of them is out.
- Rank — Survivors are scored on a 7-factor composite and ranked into Market Leaders: Sharpe ratio (25% — risk-adjusted quality of past signals), cointegration strength (20% — statistical certainty of the long-run relationship), win rate (20% — fraction of past signals that closed profitably), time efficiency (15% — speed of mean reversion, faster scores higher), cointegration stability (10% — the relationship holds across rolling windows), hedge naturalness (5% — clean, stable hedge ratio), and market-cap rank (5% — liquidity proxy to avoid illiquid micro-caps).
- Freeze — When a signal fires, its calibrated parameters freeze — entry and exit thresholds, hedge ratio, the model fit. The chart you studied is the chart the signal keeps.
One subscription. Everything included.
$49.99/mo. Everything included — Terminal, iOS, alerts, and the upcoming API/MCP feed. No tiers, no add-ons. Open the Terminal for a free preview, subscribe via Stripe, or start a 30-day free trial on the iOS App Store. Legacy desktop pairs software costs more and still leaves the system design to you.
Just arrived — the API
The same nightly payload, for your agents and notebooks. REST + MCP. Included in your subscription. Preview the API.
Common questions
Is PairSync investment advice?
No. PairSync is a research terminal. It surfaces statistical relationships between securities — all investment decisions are yours alone.
Does PairSync place trades?
No. PairSync is a research terminal. It never connects to a broker.
What is pairs trading?
A market-neutral strategy: simultaneously long one security and short a statistically related one. When the spread diverges, you bet on mean-reversion back to the historical relationship.
What markets are covered?
US, European, Indian, and Australian equities, plus crypto perps on Hyperliquid. HIP3 RWA markets — indices, currencies, bonds and more — coming soon.
How much does it cost?
$49.99/month — one subscription, everything included. Subscribe directly via Stripe at terminal.pair-sync.com, or through the App Store on iOS (30-day free trial, no credit card required). Cancel anytime from the Stripe customer portal or iOS Settings.
Is the API extra?
No. The REST + MCP payload is included in the $49.99/mo subscription when it launches.
Can I use PairSync without an iPhone?
Yes. The PairSync Terminal is fully browser-based — it works on any desktop or laptop, no iPhone or Apple account needed. Go to terminal.pair-sync.com and subscribe directly via Stripe.
What is the difference between the App and the Terminal?
The iOS App gives you a mobile-first signal feed, push notifications, and a 30-day free trial — accessed through the App Store. The Terminal gives you the full scored universe (top 200 per country vs. top 50 in the App), desktop-depth watchlists, custom filters, export, and automation — accessed from any browser, subscribed via Stripe with no App Store involvement.
Is there a free trial for the Terminal?
Not currently. The 30-day free trial is available on the iOS App only. The Terminal subscription starts immediately at $49.99/month via Stripe with no commitment — cancel anytime from the Stripe customer portal.
Are the backtests reliable?
Backtests are historical simulations optimized with hindsight. They exclude slippage and fees. Past performance does not guarantee future results.
What is the PairNet AI engine?
PairNet is our proprietary MLOps process — continuous Engle-Granger cointegration testing, multi-factor quality scoring, and adaptive signal generation across the full candidate universe every night.