So, here are the seven must-have apps for traders and investors:

1. Scutify (Free) - By far the most value-add and outright best app for every investor and trader.

2. ChartIQ (Free) - Best stock charting app and the free version is packed, but it'll cost you for real-time data.

3. FRED (Free) - Best economic app, bar none.

4. KCast Gold Live! (Free) - An impressive amount of relevant information on commodities like precious metals.

5. WolframAlpha ($2.99) - Amazing amount of information about stocks and another other topic you can think of to research.

6. Stock Guru Pro ($19.99) - Don't mistake the snapshot of each stock's fundamentals here for actual "fundamental analysis", but newbie investors especially might learn a lot using this app to research their stocks.

7. Marketwatch (Free) – Needs to be updated but still offers great content.