Why It Moved: Market Diary
Notes on unusual price days
Only for iPhone
$1.99 · Designed for iPhone. Not verified for macOS.
iPhone
Find the days your tickers moved far more than usual, see if the whole market moved too, read that day's headlines and note what you think caused it.
Why It Moved keeps a diary of the days your stocks, funds and coins moved far more than they normally do, and asks you one question about each of them: what do you think caused it?
Every ticker has its own normal. A 4% day is routine for a young coin and remarkable for a large stock, so the app measures each daily change against that ticker's usual daily move (the standard deviation of its previous 60 daily changes) and lists only the days that went 2, 2.5 or 3 times further — you choose the threshold and whether to look back 6 or 12 months.
Next to every move you'll see whether the whole market went the same way. Stocks and funds are compared with the S&P 500 ETF on the same day, coins with Bitcoin, and the move gets a stamp: market-wide day, partly the market, or its own move.
Open a move to read the story: the close before and after, a chart of the sessions around it, and the headlines published from the day before to the day after, each linked to the original publisher. The headlines show what was reported — they don't prove the cause. That judgement is yours: tag one or more causes (results, outlook, analyst call, product, deal, regulation, macro, sector news, flows, rumor, no clear news) and add a line in your own words.
Over time the journal adds up your notes by cause, up and down, with the average size of those moves, so you can see which kinds of news tend to move the tickers you follow. Export everything as CSV or share a single move as text.
What else is in it:
Track any stock, ETF, index or major coin by searching its name, and star the ones you care about most.
Tap the triangles on a ticker's one-year chart to jump straight to a move.
Prices come from public Yahoo Finance data (CoinGecko as a backup for coins) and headlines from Google News; no account or API key is needed.
Your tickers, stars and notes are stored only on your iPhone. No ads, no analytics, no sign-in.
If you open the app without a connection, it shows a built-in edition of real prices and headlines captured before release, clearly labelled, until the first download succeeds.
Why It Moved is not affiliated with Yahoo, Google or CoinGecko. Data may be delayed or incomplete.
For information and research only. Not financial or investment advice.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Michal Strba, 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 Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Michal Strba
- Size
- 3.3 MB
- Category
- Finance
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 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+
- Copyright
- © MIKODES
