GainDay

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.

Terms of Use (EULA): https://www.gainday.app/terms
Privacy Policy: https://www.gainday.app/privacy