My run-in with a misleading compounding tool

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Posts: 3 · Reputation: 104
#1Mar 5, 2021, 07:42 AM
Hey everyone, I spent a lot of time last weekend checking out what was supposed to be a legit compounding tool for BTC investments. At first glance, it looked great, had a nice layout, sliders for how often you wanted to compound, starting amount, and monthly contributions. You'd want to trust it, right? But when I did some manual checks, the numbers just didn't line up. The problem was hidden in how often it assumed compounding would happen. The tool was set to calculate daily compounding based on a nominal APY, but the platform it was meant for actually compounds weekly. That difference, over a year and a half with a decent initial amount, was enough to skew the expected outcome by around 8 to 12 percent. Not a disaster, but definitely something to think about if you're making decisions based on those numbers. What really bothers me is how easy it is to make such a mistake, and how tough it is to catch unless you're already skeptical. Most people using this kind of compounding tool are just looking for reassurance, not actually checking the facts. They input their figures, see a nice upward curve, and feel good about it. The tool might look good psychologically, but if the math is off, that's a problem. I've started treating these calculators like I do with any claims on-chain: verify before you trust. Recreating the results in a spreadsheet with clear formulas takes about 20 minutes and can quickly show you if the tool's reliable. If it’s not, just walk away. I'm curious if anyone else has had similar experiences, especially with tools that don’t explain their formulas anywhere. Have you audited any of them?
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bear_maxiSenior Member
Posts: 349 · Reputation: 1145
#2Mar 5, 2021, 12:38 PM
You didn't  mention the tool  . What should we comment now?? Have you checked this one out https://bitcoindata.science/withdrawal-strategy ? It could probably fit & help further .
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alexwalletSenior Member
Posts: 347 · Reputation: 1933
#3Mar 6, 2021, 06:07 PM
Such projection code is rarely published, for the obvious reason: "What's the point?" The creators don't care whether the calculations are correct or wrong, as such tools are psychologically appealing to profit seekers. I actually have more confidence in the sheet I created myself.
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gr3g.0rbitHero Member
Posts: 1025 · Reputation: 2646
#4Mar 6, 2021, 09:52 PM
He probably just wanted to share his experience without mentioning that tool. It's actually good that he didn't mention it because this will look like another disguised advertisement thread if he did. The actual questions are the last two sentences. You said that there's a "slider for frequency", so if it's set correctly, the tool should work as intended? Or is it for something else? (hard to tell without knowing the tool)
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orbit100Hero Member
Posts: 423 · Reputation: 2314
#5Mar 6, 2021, 11:09 PM
Never see one of them myself. I remember trying to replicate a bot calculation for trading position in the past though, but the tool explain the calculation on a documentation so it's not the same. Then again, if I find a compounding tool (or anything in general) that lacks any explanation on how they calculate the numbers, I'll probably look elsewhere instead of trying them. At the very least they should explain how and what this button or ratio do (if there's any).
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