David Harbert
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Free tools

Learn investing by doing, not just watching.

These are free, hands-on tools I build alongside my YouTube videos. No account, no cost, no real money on the line. Play with the ideas, see how they work, and build a bit of confidence before you ever put a dollar in.

Nothing here is financial advice. These tools are for learning how investing works, not telling you what to buy.

Arcelia Investment Growth Calculator: a growth curve reaching a $100,000 goal, with a plain-English summary and your settings

Tool 01

Investment Growth Calculator

Often called a compound interest calculator, but it does more than crunch a number. Pick a growth goal, see how long it takes to get there, and watch the curve change as you adjust the levers: how much you start with, how much you add each month, the growth rate, and how many years you give it. As you go, it explains in plain English what you are looking at, so the "why" clicks, not just the figure.

  • Set a goal and see the year your money could reach it.
  • Move the levers and watch how starting earlier, or adding a little more each month, changes the picture.
  • Read plain-English tips and explanations as you play, so you understand what is driving the number.
  • Compare starting now against waiting, and see in plain dollars what waiting can cost.
  • Save the chart as an image to keep or share.

Who it's for: Anyone who has heard "compound interest is powerful" and wants to actually see it, at their own numbers.

What you need: Nothing. It works on your phone, tablet, or computer, and you don't need to sign in.

Open the Investment Growth Calculator →
Arcelia support and resistance practice chart with drawn support and resistance levels

Tool 02

Practice Finding Support & Resistance Levels

Apply what you have learned in a safe space. Three layered challenges help you build chart-reading confidence, drawing support and resistance levels on real-looking charts, with no real money on the line. After each attempt it coaches you: what you got right, what to look at again, and why, in plain language.

  • Work through three challenges that build on each other.
  • Draw levels on the chart and get calm, specific coaching on what you got right and what to look at again.
  • Learn what support and resistance actually mean as you go, explained in plain terms, not jargon.
  • Practise the same skill over and over until reading a chart feels less like guessing.

Who it's for: Anyone starting to learn chart reading who wants to practise the idea before trying it anywhere that counts.

What you need: Nothing to sign up. You will be drawing on charts, so it is easier on a tablet, a desktop, or a phone turned sideways than on a portrait phone.

Open the Support & Resistance trainer →
Arcelia coaching feedback: plain-English scoring and tips on your support and resistance lines

More than a calculator

Built to coach, not just calculate.

Every tool here explains what you are looking at in plain English and gives you calm, specific feedback as you go. You are not just handed a number, you learn why it is what it is, at your own pace, with no jargon and no pressure. It is the same way I teach on the channel, made hands-on.

  • See it, watch the idea play out instead of just reading about it.
  • Understand it, plain-English tips and explanations as you go, not after.
  • Practise it, try it yourself, with feedback, and no real money on the line.

More on the way

New tools land on the channel first.

I add new tools as I make videos, so the best place to catch them is the channel. Each tool usually has a video that walks through the idea behind it.

Subscribe on YouTube →

Be first as this grows.

New tools land on YouTube first. If you also want an email as bigger things arrive, deeper training and tools for when you are ready to go further, leave your address. No spam, and you can leave any time.