GainDay is an overall app developed by DANA AINIWAER.
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App Information
GainDay is FREE to download. The APK download size is 88.45 MB. The latest version available is 2.2.0. The last update was on May 9, 2026.
Technical Requirements
The app has a content rating of Everyone. The app has been available on Google Play February 2026.
Description
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
Each subscription will automatically renew 3 days before the expiration date for
the same time period. Subscriptions can be cancelled at any time before the renewal.