Nobody wrecks a budget on a $4.99 gem pack — that's exactly why it slips past you. Enter one small, recurring buy and see what it really costs over the years, plus what the same money could have become. This is about awareness, not guilt.
Your Microtransaction
The Real Cost
Enter a purchase and click Reveal.
The Skin Factor is our gamer translation of David Bach's Latte Factor, the idea from The Automatic Millionaire that small, recurring, easily forgotten purchases quietly compound into serious money. Bach's example was a daily coffee. For gamers it's the $4.99 gem pack, the $9.99 monthly pass, the impulse gacha pull, and the small DLC spread across several games — each one far too small to notice, which is exactly why it slips through.
This calculator shows both halves of the story. The first is what you'll actually spend if the habit continues — simple arithmetic that's almost always bigger than the guess. The second is what that same money could have grown to if it were invested instead, using a hypothetical average return. The gap between them is the true cost of the pattern.
The Skin Factor is not a rule that says small purchases are bad. A battle pass you genuinely enjoy every day can be well worth $9.99; a forgotten subscription draining your account for a game you quit months ago clearly isn't. The goal is to see the pattern, then decide on purpose which recurring buys stay and which go. Awareness, not blanket guilt, is the entire point.
This calculator is a one-time snapshot of a single habit. Hunter Vault keeps the full picture current — logging your real microtransactions, flagging recurring charges, and turning the money you redirect into visible progress on your savings Vaults. Hunter Vault is our own app, and we recommend it as its makers, not as a neutral third party.
Hunter Vault logs your real spending, flags the recurring charges you forgot, and turns the money you redirect into XP toward your savings Vaults — all offline and private.
Download Hunter Vault FreeThis calculator is for illustration only. The "if invested" figures assume a constant hypothetical annual return compounded monthly; real investment returns vary, are not guaranteed, and can be negative. This is not financial or investment advice.