ProductivityMoney Tracker is a mobile expense tracker and budget app for Android and iPhone, published under the Google Play developer account Horoscope365 - the controller is a natural person, Zheng Kui, with a Beijing postal address on the Play developer block. You record income, expenses and transfers by hand, by voice ("lunch 12"), by photographing a receipt or bill, or on Android with Premium by confirming a transaction captured from banking or payment app notifications; Premium adds bill import, unlimited AI entry, app lock and extra books. Budgets can be set monthly and per category, with charts, category reports, multiple currencies, separate books, AA split ledgers and shared team books, and data exports to CSV, Excel or PDF. It deliberately does not link to a bank and never asks for bank credentials: without sign-in records stay on the phone, and signing in backs them up to the vendor's own server. Distribution is established rather than nominal - 5M+ Google Play installs at 4.8 stars from roughly 324K reviews, an App Store listing at 4.8 from 414 ratings, both updated in October 2026. The weakness is documentation, not the product: the marketing site publishes no price, links no legal page and prints no contact address, and the only privacy notice sits at an unlinked path that never mentions the financial data, receipt photos, voice clips or notification text the app handles.