Free · no signup
Paste the signal you were sent. Rapater sizes it against the rule you set, then tells you what it actually risks — in your money, in plain words.
Try it on a signalWhat it works with Kraken · signals pasted as text · USDC or USDT, sent by you
Rapater is not affiliated with, endorsed by, or a service of any exchange, broker or signal provider. It never holds your funds and never takes custody of anything. What is switched on today is stated at rule four.
Long ASSET
You make money if the price rises. 3,125 units, 0.41x leverage.
Most you can lose
$10.00
1.00% of your $1,000.00 — the most this trade can take.
How it works
A stranger who has never met you, who has no idea what's in your account, should not be deciding the size of your bet. That is why people blow up — not because the signal was wrong.
So the rules go first and the order goes second. Rapater never says a trade is good or bad: it shows what the signal does against the minimum you set, and you decide.
One number: the most you are willing to lose on a single trade. Every size on this site is derived from it, and nothing overrides it.
The message as you received it. No account, no card, no connection — the calculator reads entry, stop and targets out of plain text.
Your money, in plain words, beside what the signal's own leverage would have cost you. No stop, no order: a trade without one isn't risky, it's unfinished.
A key that can place orders and can never withdraw — a limit the exchange enforces, not one we promise. Rapater holds no funds and takes custody of nothing.
Trading features are live for members who connect an exchange key (Terms §5.1). Rules one to three run without one.
Pricing
The calculator is free forever, with no login. You only pay once Rapater is doing the work for you.
Payment is by USDC or USDT transfer you send yourself, to an address tied to your account. There is no card on file and nothing can charge you — every renewal is an invoice you choose to pay. The full terms are in the Terms.
Calculator
Free
No login, forever
Account
Free
Email sign-in, no password
When it places the orders
Founding seat
$1,000
one-time — then $79/year from year 2, for updates and support
Founding members
The seat is bought once. There is no monthly fee, no card on file and nothing that can charge you, and the offer is capped at 1,000 seats across all accounts. From the second year there is an annual renewal, priced above, which covers software updates and priority support — and nothing else. It is an invoice you choose to pay: not paying it never removes your access, and your licence to the software stays perpetual either way. The full terms are in the Terms §10.3 and §10.4.
A seat is claimed from your account page and held for 24 hours while your transfer confirms. Your seat number is recorded when the transfer settles.
What you get back
Three answers on every signal you paste, in the calculator, with no account.
Position sizing
Done for you
Your risk rule decides the size. The signal's leverage never gets a vote, no matter what it says.
Still at risk
Only ever goes down
The moment your stop reaches breakeven, Rapater says so in plain words: you can't lose money on this trade anymore.
Target ladder
Your rule, not ours
Every target is scored against the minimum payoff you set, and Rapater names the first one that clears it.
Set the one number you are willing to lose on a trade and keep it with your account. Every signal you paste afterwards is sized against it, and your saved trades stay in one place you can find again.
No password. You give an email, we send a link that signs you in.