Vedutafree stock forecasts Use in browser Download

Free for Mac, Windows and the browser

See the range a stock could end up in.

Pick a stock. Veduta shows where its price may land in a week, a month or three months, as a range, and later checks how often that range was right. Made for learning how markets move: it never tells you to buy or sell.

What changed

Made by Jaden as a free project: no ads, no account, nothing for sale.

Tested on seven and a half years of real prices: at a month, the 9 in 10 band held 90.6% of the time, where 90% is the aim. See the test

An example stock: a year of made-up daily prices, then the band the app's own model draws from them for the next month. The darker band is where half of the simulated paths end, the lighter one where 9 in 10 do.

One stock at a time, or your whole portfolio.

The app's four main pages, drawn plainly. Scroll, and each one turns into the next.

Open a stock

Its chart first, then where the price is likely to be in a week, a month or three, then the signals and statistics under it. The headline is the range, because at those horizons a range is all a model can fairly give.

  • How much it tends to move, from its recent daily swings, with room for rare big days
  • Earnings dates widen the band on the days they fall
  • Analysts' targets shown beside it, never mixed in

A portfolio in your currency

Milan and Paris listings are valued at the day's exchange rate and shown in the currency you choose. Risk comes with its margin of error attached: how closely it follows the market (beta), what it earned for the risk it took (Sharpe ratio), and a simulated worst month.

A summary for the morning

Your portfolio and how it moved, what changed since you last looked, the indices, and what is coming up this week. Light, dark or mixed, or following your system.

It keeps score

Every band the app draws is logged and scored when its day comes. The Scorecard shows how often the bands held what they claimed, and says so plainly when they were too narrow. With enough scored, the app widens its own bands to match.

Next: See how a forecast is made

Five steps, one stock.

The stock here is simulated, drawn the way the app draws a real one. Each step plays as you reach it.

  1. Start from what it has done

    Six months of daily closes for a made-up stock. Everything after this comes from them.

  2. Measure how much it moves

    Every day's move, big or small. Big recent swings widen the forecast, and a quiet stretch lets it narrow. The app fits a GARCH model to exactly this.

  3. Run it forward, many times

    Each path is one way the next month could go, with the stock's own size of moves and the odd heavy day. The app runs 600 for a chart, 2,000 for a tracked stock and 6,000 in a deep analysis.

  4. Read where the paths end

    Half of them end inside the dark band and 9 in 10 inside the light one. That range is the forecast. No single line is.

  5. Wait, then check

    When the month is up, the real price is compared with the band. Every forecast is scored this way, and when bands miss more often than they claim, the app widens them by the shortfall.

Next: Try the band yourself

  

Every stock gets its own band.

Two dials and a made-up $100 stock. Move them to see how the swings and the trend shape the band. In the app, a real stock's band also follows its own history, its earnings dates and the news.

45%
Horizon
+7%
What the app would say Half of the paths end between $91.37 and $108.87 9 in 10 between $80.55 and $123.50. The middle: $99.74 (−0.26%). 49% end higher: no clear direction. The middle sits below $100 although the trend is up: big swings pull the typical path down, because a 10% fall needs an 11% rise to undo it. A model's estimate for a made-up $100 stock, from the two dials. Not a forecast of any real stock, and not advice.

Next: Install it, or use it in your browser

Put it on your computer.

About two minutes. Your computer asks you to confirm once, because Veduta is free and does not have a paid developer certificate yet.

On a school laptop, or a computer that will not let you install apps? Use it in the browser, with nothing to install.

Why your computer asks you to confirm. Veduta is free and is not signed with Apple's or Microsoft's paid developer certificate yet, so macOS and Windows cannot vouch for it and ask you to confirm once. You never have to turn off a security setting for it.

Check that your download is the published file

Every version is published on GitHub, with its full release history, and each file has a fingerprint (SHA-256), shown next to its download button below. Work out your file's fingerprint and compare the two. If they match, the file is the one that was published.

On a Mac, in Terminal: shasum -a 256 ~/Downloads/Veduta-*.dmg

On Windows, in PowerShell: Get-FileHash $HOME\Downloads\Veduta-*-windows.zip

The app checks the fingerprint of every update itself before installing it.

Mac with Apple silicon

  1. Download the disk image

    Download Veduta, then open the file from your Downloads.

  2. Drag Veduta onto Applications

    In the window that opens. You can then eject the disk image and bin it.

  3. Open it once, and say Done

    Open Veduta from Applications. macOS says Apple could not check it for malware, because it is not signed with a paid Apple developer certificate yet. Click Done, not Move to Trash (Move to Bin on some Macs).

  4. Allow it in System Settings

    Within the next hour, open System Settings > Privacy & Security, scroll to the bottom, and click Open Anyway next to Veduta. Confirm with your password or Touch ID, and choose Open Anyway when it asks again. On macOS 14, Control-click Veduta in Applications and choose Open instead.

  5. Wait a minute the first time

    The first launch fetches your first prices. After that it opens in a few seconds, and updates itself when a new version is out.

Still refused, or "damaged and can't be opened"?

Rarely needed: try the steps above first. This happens on some Macs when Open Anyway never appears. Open Terminal (Applications > Utilities), paste this line, press Return, then open Veduta again. It removes the "downloaded from the internet" mark from Veduta only, and changes no other setting.

xattr -dr com.apple.quarantine /Applications/Veduta.app

Download Veduta for macOS

Version
Released
Size
Needs
macOS 14 or later, on Apple silicon
Costs
Nothing. If you want written summaries from an AI model, you can add your own Anthropic key, which Anthropic charges for.
Data
Your portfolio stays on your Mac. See what leaves it.
After you install: your first ten minutes
  1. Find a stock. Type a symbol or a name in the search at the top: AAPL, or ENI.MI for a Milan listing. Return opens it.
  2. Read the band. Under the chart, the line in bold says where half of the simulated paths end (a wider share once enough of its forecasts have been scored). 1W, 1M and 3M change the horizon.
  3. Add what you own. Portfolio > Add position, with the shares and the price you paid. Other currencies are converted for you.
  4. Keep score. Track on Scorecard, on a stock page, records the model's estimate, the middle of its band, at eight checkpoints from a day to three months. The Scorecard fills in the actual price as each day comes.
  5. Close the window when you are done. Veduta stays in the menu bar (on Windows, by the clock) so alerts keep running. Quit from that icon.
  6. Optional: backup prices. If prices load slowly, Settings > Keys takes free keys from other data services. Each box says where to get one.

Next: Check how often the bands held

Seven and a half years of real prices, scored.

The desktop app's model was run on the real prices of 60 US-listed stocks and two index funds, up to July 2026: 46 of the stocks and both funds from January 2019, the other 14 from mid-2022. Every fifth market day it drew each one's band from only what was known that day, then checked it against what the price did next: 20,882 bands, each checked at up to seven horizons from a day to three months, the misses counted with the rest.

Past prices, walked forward. Not a forecast, not advice.

9 in 10 band held90.6%aim 90% · 20,634 bands

Middle half held51.1%aim 50% · typical 9 in 10 width 28% of the price

How often the 9 in 10 band held, month by month, by the month the results came due. The line marks the 90% aim; months under it are marked.
How wide the bands were, as a share of the price on the day: the dark bar is the middle half, the light one the 9 in 10. A day ahead, the 9 in 10 band was only 6.0% of the price wide and held 91.4% of the time, as often as the three-month band, which was 51% wide.

A plain rule, a band from the last year's volatility alone, held 89.8% at a month against Veduta's 90.6%, with bands about as wide (29% of the price against 28%). Month by month, its worst month held 24%, Veduta's 28%, and it fell under 80% in 7 of 90 months, Veduta in 5.

Every horizon, the stocks one by one, and what this test leaves out

Live, since launch

HorizonScoredMiddle half held aim 50%9 in 10 held aim 90%Missed the 9 in 10

What this shows: whether the bands hold as often as they say, the misses counted with the rest. What it does not show: whether using them leads to better decisions than a simple rule, or to better returns after costs. Those are different questions, and a record of bands cannot answer them, so Veduta makes no claim about them.

How the bands are drawn, and checked

Next: Get Veduta

What changed lately

Questions

Who makes Veduta?

One person: Jaden. There is no company behind it and nothing for sale: no paid tier, no adverts, and no data sold. Every version is published on GitHub with its release history, and the app checks each update's fingerprint before installing it. To reach the owner, write to whoisgetlost@gmail.com, or use the feedback page.

Is it safe to install? Why does my computer warn me?

Veduta has no ads and no account, and every version is published on GitHub with its fingerprint. Your computer warns you because Veduta is not signed with Apple's or Microsoft's paid developer certificate yet, so they cannot vouch for it. You confirm once, as the install guide shows, and never need to switch off a security setting. To check your download is the published file, compare its fingerprint with the one in the guide.

Is it free? Do I need an account?

Free, with no account and no paid tier. The desktop app needs no key at all. The browser versions (Veduta for the web on a computer, Veduta Lite on a phone) need a free price key from Twelve Data, because a browser cannot ask Yahoo for prices; they say where to get one, and open on example prices until you have one.

My computer is short on storage. Can I still use it?

Yes. Veduta for the web runs in the browser with nothing to install: a watchlist, the bands, deep analysis, Discover, a portfolio, a paper account and the week's headlines. Kept as an app from Chrome, Edge or Safari, it takes about 1 MB. The desktop download is the bigger one; its size is next to its download button.

How accurate are the forecasts?

They are ranges, so the fair test is whether prices land inside them as often as claimed. Walked forward over seven and a half years of real prices, the 9 in 10 band held 90.6% of the time at a month and the middle half 51.1%, where 90% and 50% are the aims. The track record above has every horizon and the worst months, and the live record since launch. It does not show whether the bands lead to better trades, and Veduta does not claim they do.

Is this financial advice?

No. Every number comes from statistical models fitted to past prices. They describe what those models compute. They carry no guarantee and they are not a recommendation to buy or sell anything.

Where do the prices come from?

From Yahoo Finance by default, with no key. If Yahoo is limiting your network, free keys from Twelve Data, Finnhub, Tiingo or EODHD fill in; Settings says which one covers which markets.

Does it work with European stocks?

In the desktop app, yes. Milan, Paris, Frankfurt, London and other listings chart and forecast in their own currency, and the portfolio converts them at the day's exchange rate. In the browser versions, the free price key covers US listings only.

Can it trade?

It has a paper account for practice, with realistic fills and stops, in the desktop app and in the browser versions. The desktop app can also send orders to an Alpaca account you connect, always through a confirmation step.

What does it send back to you?

When it checks for updates, its version number and which build it is (Apple silicon Mac, Intel Mac or Windows). An update it downloads is counted with that kind of computer. When it first opens, it asks whether it may also send usage statistics, error reports, setup steps and speed timings; each is off until you say yes, and Settings changes them at any time. Never symbols, holdings or keys. The privacy page has the full list.

Does it run on Windows, an Intel Mac, a Chromebook or an iPad?

Windows 10 and 11, and Intel Macs, yes: each has its own build, and the install guide above has the steps for it. On a Chromebook or any other computer, use Veduta for the web in the browser. On an iPad or a phone, use Veduta Lite at getveduta.com/app and add it to the home screen: it has everything Veduta for the web has, laid out for touch. Both need a free price key, explained when they open.

Found something wrong, or want something added? Send feedback

Try it on a stock you follow.

Free, with no account and no ads. Your portfolio stays on your own device. Veduta shows ranges, never what to buy or sell.

Download Veduta Use it in your browser opens with example stocks

Tried it already? Nine quick questions help decide what gets fixed first.