Trin is the only app that brings real time graphical updates of the major American stock exchanges to your iPhone, iPod Touch or iPad. With 4 meters bringing you up to the second changes in the NYSE, NASADQ, S&P 500 and Russell 2000 stocks, you can keep track of the Trin Index, no matter where you are.

The Trin index, also called the Arms Index, is used by short-term traders on the major U.S. stock exchanges. Until now, it only existed on ticker displays, and if you wanted it for yourself it meant spending a lot of money for a terminal. Now there's Trin for iPhone, iPod Touch and iPad. With Trin on your device you can keep track of the Trin Index wherever you happen to be.

Trin's powerful features include:
* Automatic updates every 5 seconds
* Real time tracking of NYSE, NASADQ, S&P 500 and Russell 2000 stocks
* Real time updates of Dow Jones, NASDAQ Composite, S&P 500, and Russell Indices
* 4 easy to read meters

Trin gives you 4 meters to track important index changes in real time. One meter keeps you up to date with NYSE, another brings you the latest from NASDAQ, and the third keeps up with S&P and the fourth Russell 2000 stocks. All four meters also give you up to the second changes in the Dow Jones index, as well as the NASDAQ Composite, S&P 500 and the Russell index. By automatically updating every 5 to 10 seconds, Trin lets you literally watch the changes as they happen throughout the day.

If you know how the trading index works, then you know the meters won't change much until the Hedge Funds kick in; and when they do, you'll be the first to know. Trin's 4 meters clearly show you how volume is moving the market and in what direction. If you're a short-term trader, then you know how crucial that information is.

Putting Trin on your device is like putting your own ticker display in your pocket. Download it now so you can stop guessing what the market will do next, and always know what it's doing right now.

What’s New

Version 1.4

This version was built for iOS 10 and iPhone 7.

Ratings and Reviews

5.0 out of 5
1 Rating

1 Rating

StephenL. ,

Best market compass

Now optimized for late-model iPhones

BSquared4u ,

Great App...Definitely Worth $20

This app is great!! It's just what I've been looking for. I really like the way it updates every five seconds. In this industry, time is money! I plan to benefit substantially with this one.

CyrusKhavari ,

Too pricey, great app!

Maybe if I can understand why the app is 20 bux, I could give it a better rating. App is visually what you need as a scalper, for entries and exits.

Suggestion: if developers can place trin and tick (for NYSE and NASDAQ ) together in next update it would be worth the price. I understand that data is costly.


Charles Brauer
3.1 MB

Requires iOS 10.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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