# PairSync: 3rd Person StatArb — Statistical Arbitrage · Quant > Third-person statistical arbitrage strategy with user-selected trading pairs and live market data. (iPhone/iPad app by Mark McGuire.) - Source: https://appshunter.io/ios/app/pairsync-3rd-person-statarb/id6758999143 (this page in markdown: same URL + `.md`) - Developer: [Mark McGuire](https://appshunter.io/developer/1876244355) - Category: Finance, Education - Price: Free with in-app purchases - Age rating: 4+ - Requires: iOS 15.1 · 50 MB - Languages: American English - Released: 2026-03-09 - Data updated: 2026-09-07 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/pairsync-3rd-person-statarb/id6758999143/reviews.md ## What is PairSync? PairSync is the first 3rd-Person StatArb Strategy on mobile. A live quantitative strategy. Running continuously across global markets. You watch it from the outside -- and choose which pairs it runs on. The watchlist is where you become the curator You don't control the strategy's rules -- but you decide which pairs it runs on. Start with the pre-built Market Leaders or construct your own from any eligible pair in the feed. Every pair you add shows the full strategy output on that pair: open positions, historical signals, live Z-score spread, backtest track record. Two curators with identical watchlists see identical output -- the strategy runs the same rules for everyone. What differs is the universe you choose. The system runs continuously, 24/7 Filtering millions of potential asset combinations through sector pairing and market cap alignment, then applying Engle-Granger cointegration analysis to isolate eligible pairs, calibrating entry and exit parameters for each, ranking them across seven factors, and delivering continuously curated Market Leaders lists across US equities, European markets, ASX, NSE, and crypto. It enters positions. It exits them. It logs every signal. You watch. WHAT THE PLATFORM DOES PairNet AI -- nothing reaches the feed without proof Every pair clears hard statistical filters -- Engle-Granger cointegration p-value, Hurst exponent below 0.5, half-life between 2 and 60 days, and a completed backtest -- before entering the scoring pool. Survivors are ranked across seven factors: Sharpe (25%), cointegration strength (20%), win rate (20%), time efficiency (15%), stability (10%), hedge naturalness (5%), market cap quality (5%). The top pairs reach the mobile feed. Calibrated daily. Frozen at signal. PairNet AI re-optimises entry and exit thresholds and Kalman-filtered hedge ratios for every pair, daily. The moment a signal triggers, those parameters freeze for the life of that trade -- the strategy follows its real-world outcome, untouched by the continuing optimisation cycle. Success keeps the pair. Failure replaces it. The track record is open Every pair shows its backtest Sharpe ratio, win rate, average duration, and equity curve -- the historical performance PairNet AI calibrated against. Nothing is hidden. Strategy Positions -- live from entry When the strategy enters a position, PairSync logs the entry Z-score, direction, and date. Strategy Positions tracks every open position from entry forward. The spread meter shows where the pair sits relative to its signal threshold right now. Signal Log -- every call on record Every signal the strategy has fired -- outcome, direction, duration, Z-score at entry. Exportable to spreadsheet. Take the data with you Strategy Positions and Signal Log are fully exportable -- structured for basket construction, position sizing by AUM, and high-touch brokerage execution. One tap. Signal pairs only. Coloured accent strips show signal state before you read a single number. WHO USES PAIRSYNC For traders who think in systems. For quants who want to observe a live strategy in production -- not a simulation. For finance students learning from real market data, not a textbook. FREE TRIAL 30 days. Full access. Cancel any time. Terms of Use & Privacy Policy: https://www.pair-sync.com/legalterms ## Key features - Live quantitative strategy - User-curated watchlists - Detailed pair performance data - Real-time strategy positions - Historical signal logging - Data export functionality - Automated market filtering ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | PairSync Pro | $24.99 | per month | ## Recent user reviews (2 of 2) All indexed reviews: https://appshunter.io/ios/app/pairsync-3rd-person-statarb/id6758999143/reviews.md ### 5/5 — Pairsync makes pair trading easy *2026-03-16* PairSync makes pair trading easy to understand. The app is simple to use, clear in its functionality, and explains trading opportunities in plain English. Great for anyone wanting a smarter, more practical way to learn and use pair trading. ### 5/5 — Great tool for traders! *2026-03-14* PairSync makes pairs trading simple and accessible. Clean design, smart insights, and easy to use. Looking forward to seeing this platform grow. ## Frequently asked questions about PairSync ### What is PairSync? PairSync is a mobile application that offers a third-person statistical arbitrage strategy. It allows users to select which trading pairs the automated strategy focuses on, providing live data and historical performance for each. ### How does PairSync work? The app runs a continuous quantitative strategy across global markets. Users curate a watchlist of trading pairs, and the app filters millions of combinations using statistical methods to identify eligible pairs for the strategy. ### What kind of data does PairSync provide? PairSync provides detailed data for each selected pair, including open positions, historical signals, live Z-score spread, and backtest track records. It also logs every signal fired by the strategy. ### Can I export data from PairSync? Yes, Strategy Positions and Signal Log data are fully exportable from PairSync. This structured data can be used for basket construction, position sizing, and brokerage execution. ### What statistical filters does PairSync use? Pairs must clear statistical filters such as Engle-Granger cointegration p-value, Hurst exponent below 0.5, half-life between 2 and 60 days, and a completed backtest before being considered by the scoring system. ### Does PairSync have ads? Yes, PairSync contains advertisements. ### What are the subscription options for PairSync? PairSync offers a 'PairSync Pro' subscription at $24.99 per month, which includes a 1-month free trial. ### Is PairSync available on multiple devices? PairSync is supported on iPhone, iPad, and iPod devices. ## Version history (last 5 releases) ### 1.0.4 — 2026-04-20 Performance & UI improvements Watchlist rankings powered by a 7-factor composite score: Sharpe, cointegration, win rate, time efficiency, cointegration stability, hedge naturalness, and market cap rank Watchlists now have per-market refresh buttons for faster updates Market Leaders: tap the logo to load continuously curated watchlists Pair list now shows pair Score instead of Win Rate for a cleaner signal view Improved sign-up screen with live market stats Bug fixes: broker basket routing now covers all market regions; pair universe counts corrected for AU, US, and Crypto markets ### 1.0.3 — 2026-03-30 What's New — Build 189 (v1.0.3) Export — Strategy Positions File The Strategy Positions export now includes a Broker Basket sheet. This sheet is automatically generated from what the PairSync strategy currently holds in its model portfolio. It is formatted as a structured order reference file — one row per leg, per position — for subscribers who wish to independently review those positions and make their own execution decisions. It is not a trade recommendation. Export — Daily Activity File The Signal Log export now includes a Daily Basket sheet. This sheet reflects today's strategy activity — new entries and exits from the current model run — formatted as a structured reference file. Subscribers who independently choose to act on strategy signals can use this as a working reference for their own broker workflow. Export — Global Market Coverage Both export files now include all markets in the model portfolio. US, ASX, EU, Indian, and crypto positions each appear with their market context noted inline. Positions that cannot be submitted via a standard equity broker workflow are clearly annotated with their execution channel for subscriber reference. Nothing is hidden — the file reflects the complete model portfolio as-is. Export — Trade Log The Trade Log in the Signal Log export now shows one row per leg per event, giving a complete blotter view of the strategy's entry and exit history across both legs of each pair. Signal Cards Directional accent strips added to signal cards for faster visual scanning. Signal filter toggle added to the watchlist. PairSync generates informational signals only. Nothing in this app constitutes financial advice or a recommendation to trade. All execution decisions are made independently by the subscriber. ### 1.0.2 — 2026-03-25 What's New Fixed a strategy tooltip display issue. Build 182 added signal log crash protection for null entry data. Build 183 bumped to version 1.0.2 with tooltip copy corrections across the ratio chart and position context. Build 184 normalised asset class filtering for US stocks in the portfolio positions tab. Build 185 resolved the portfolio positions display for US equity positions. We replaced the Active tab with a Markets grid. Tap any market — US, EU, ASX, NSE, or Crypto — to see top-ranked pairs for that region. Also updated the Live Position card on the pair detail screen to open expanded by default when a strategy signal is active. Removed redundant label text from position leg rows. Then added a coloured left accent strip to signal-active pair cards for faster visual scanning. Backtest optimiser returns on cards are now labeled "Opt." to distinguish them from live position P&L. The Position Context box on the pair detail screen now reads "OPTIMISER" instead of "IN TRADE". A new Signals filter pill appears on watchlist tabs when active signals are present — tap to show only signal-active pairs. ### 1.0.1 — 2026-03-22 New in this update: Strategy Dashboard - A dedicated tab now organises every open strategy position by asset class and displays real-time P&L. All positions in one place, without navigating through individual pairs. Signal Log - Every signal the PairNet model has generated is searchable and filterable by status. Export a 4-sheet report covering signals, open positions, closed positions, and a position-sizing reference - delivered directly to your email. Portfolio Export - Export your full portfolio as a spreadsheet and share it by email without leaving the app. Live Position Cards - Each pair screen now shows the details recorded at entry: price, hedge ratio, unrealised gain, total return, and capital allocated per leg in whole shares. System-recorded values, not estimates. Market Leaders Watchlist - The watchlist opens pre-loaded with top-ranked pairs. A freshness timestamp shows when data last updated. A warning appears when the data has not recently refreshed. Notification Settings - Choose between immediate alerts, a daily digest, or no notifications. Each alert routes directly to the relevant pair. Cleaner Charts - Backtest sparklines no longer display Y-axis labels, consistent with standard financial charting conventions. Win Rate Display - Win rate is only shown when five or more completed trades are available. Fewer than five hides the figure to avoid misleading conclusions from small samples. Stability - Fixed a rendering crash in the Signal Log history view, a null-safety issue in position rows, and a build failure from duplicate component declarations. PairSync displays strategy and market data for informational and educational purposes only. Nothing in this app constitutes investment advice or a recommendation to buy or sell any security. ### 1.0 — 2026-03-09 No release notes. ## Related topics [3rd person](https://appshunter.io/ios/topics/3rd-person) · [the third person](https://appshunter.io/ios/topics/the-third-person) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-07.*