Japan Stock Tracker
Finance
$14.99 · In‑App Purchases · Designed for iPad. Not verified for macOS.
JPST (Japan Stock Tracker) helps global investors understand Japanese companies before and after earnings.
Instead of focusing on short-term price movements, it enables users to follow business structure and performance through financial filings and earnings data.
Designed as a pre- and post-earnings reading tool for Japanese stocks.
FEATURES
PRE-EARNINGS READING
Read structured company snapshots before earnings announcements, built from official annual securities reports.
POST-EARNINGS SNAPSHOT
Quickly review key financial results immediately after earnings releases — including quarterly (Q1 / H1 / 9M) and full-year (FY) reports with YoY comparisons and progress against full-year guidance.
PERIOD FILTERS
Filter recent earnings by reporting period (FY / Q1 / H1 / 9M).
MULTI-YEAR FINANCIAL TRENDS
Analyze revenue, profitability, and balance sheet trends across multiple years.
EARNINGS CALENDAR
Track upcoming earnings announcements across Japanese listed companies.
FAVORITES
Follow companies and quickly access their earnings information.
DATA SOURCES
The app uses publicly available corporate filings from:
・EDINET (Financial Services Agency of Japan)
・TDnet (Tokyo Stock Exchange disclosure system)
DISCLAIMER
Japan Stock Tracker provides informational financial data only and does not provide investment advice or trading recommendations.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://sites.google.com/view/protofund-jst
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
What's New in 1.3.5
- Manage your subscription from the app — open Settings and tap "Manage subscription" to change or cancel your plan.
- Fixed an issue where some Premium and trial users saw their plan shown as "Free" in Settings.
- Clearer confirmation messages after purchasing or restoring Premium.
- Earnings articles are now generated with an upgraded model for more accurate figures and clearer takeaways.
The developer, Proto-Fund ,LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Identifiers
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Contact Info
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Proto-Fund ,LLC
- Size
- 42.8 MB
- Category
- Finance
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPad
Requires iPadOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- JST Premium $14.99
- Copyright
- © 2026 Proto-Fund