GainDay

Name: GainDay
Author: DANA AINIWAER

By: DANA AINIWAER

Multi-Market Portfolio Tracker

Features & Capabilities

2.0 is here: AI analyst online, NISA historical FX snapshot, full JFSA 2,260-fund catalog. Apple Sign-In + cloud AI for global multi-account investors.

Gainday is a multi-account, multi-market investment tracker built for investors in Japan, China, and globally.

■ One app, five markets Japanese stocks, US stocks, China A-shares, Hong Kong stocks, Japanese mutual funds (NISA), and crypto — managed in a single view, auto-converted to your base currency. Stop juggling SBI, Rakuten, Futu, Snowball, Robinhood, and Yahoo Finance.

■ NISA done right (Japan users) • Full JFSA NISA catalog: 2,260 unlisted funds, 318 Tsumitate-eligible • Real-time quota consumption: ¥1.2M Tsumitate + ¥2.4M Growth annual + ¥18M lifetime bar • Foreign-currency buys lock in trade-date FX so lifetime quota doesn't drift with yen moves • Per-10,000-unit pricing accurate for Japanese mutual funds

■ AI private analyst (Pro / Pro+) Ask about portfolio performance, what moved today, risk concentration. AI grounds its answers in your position weights + live market data + multilingual news. Pro uses DeepSeek; Pro+ unlocks Anthropic Claude top-tier model. Strict privacy: weights only — never amounts or trades.

■ Privacy by design • Core data (holdings, transactions) never leaves your iPhone • Anonymized weight summary uploads only when you explicitly enable AI • Data stored in our Tokyo region

■ Core features • P&L calendar with monthly heatmap + yearly curve • Multi-account, multi-currency consolidation • Dynamic Island live price alerts • Monthly & yearly share cards • CSV import/export (SBI, Rakuten, Futu, Snowball, Robinhood) • Full localization: zh-Hans, zh-Hant, en, ja

■ Subscription • Free: forever, all core features • Pro: $3.99/mo · $29.99/yr • Pro+: $6.99/mo · $59.99/yr

Payment via Apple ID; subscriptions auto-renew unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in iOS Settings → Apple ID → Subscriptions.