SigniBull
Paper trading, charts, alerts
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
Practice investing in US stocks with a paper portfolio, follow verified results on the leaderboard, and learn as you go. No real money, no brokerage, no advice.
SigniBull is a place to practise investing in US stocks without putting money at risk, and to do it alongside other people who are practising too.
No real money, no brokerage, no trading, no advice — paper trading and education.
YOUR PAPER PORTFOLIO
Record the positions you hold or would like to hold and see them priced every day: value, profit and loss, and what each one is worth right now. SigniBull keeps two numbers apart on purpose — the part it priced itself and the part you typed in — so a total is never shown as more certain than it is.
THE MARKET, IN PICTURES
A heat map of your own holdings and of the S&P 500. Sector tables. An earnings hub with the week's reports and a report card for each company. Economic reports, ETFs and bonds, each with a page that explains what you are looking at.
NEWS THAT IS ABOUT YOU
Your feed carries the stories about the companies you hold and watch, each one tagged with the company it is about and who published it, with the same story never shown twice. The newspaper page lays the day's headlines out as a front page.
TOP BULLS
A leaderboard of members ranked by verified results — the return SigniBull calculated from prices it fetched itself, not a number anyone typed. Open any member to see their portfolio the way they see it.
TOGETHER
Channels for stocks, ETFs, ideas and news. A feed of what members are doing. Friends and direct messages. Report and block are one tap away on every post.
LEARN
An academy of short lessons, a library of stock analyses, and a user guide written for people who are new to this.
ALERTS
Price alerts on any symbol, shown in the app the moment they trigger.
WHAT SIGNIBULL IS NOT
It is not a broker and it does not connect to one. No order you place here reaches a market; no money moves. Nothing in the app is a recommendation to buy or sell anything. Prices and market data can be delayed. You must be 18 or over.
An account is free. Sign in with an email address; there is nothing to buy inside the app.
The developer, GUY RUBINGER, 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:
- Financial Info
- Contact Info
- User Content
- Identifiers
- Usage Data
- Other Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- GUY RUBINGER
- Size
- 33.8 MB
- Category
- Finance
- Compatibility
Requires iOS 16.4 or later.
- iPhone
Requires iOS 16.4 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
18+
- 18+
- Contains
Messaging and Chat
User-Generated Content
Social Media
- Copyright
- © 2026 Guy Rubinger