You play. Lockbox keeps count.
Follow your chosen slot strategy, track your session, and record money you’ve set aside — all in one simple app.
A little structure for your session.
Choose your approach.
Select a strategy and confirm the machine’s bet options.
Tap through your spins.
Lockbox counts them and tells you what to bet next, then asks for your balance when the strategy calls for a check.
Know where you stand.
Review your session result and record money removed from play.
Four strategies
Each one is a way of pacing a session and keeping count. None of them changes the odds of a slot machine.
Mississippi Half Step
Follow a fixed 20-spin bet sequence.Read the Mississippi Half Step rulesStart a Mississippi Half Step session
1% Strategy
Adjust bets at bankroll checkpoints using the machine’s available levels.
$20 Method
Track separate $20 machine runs and their cash-out conditions.
5 Spin
Count consecutive spins with no payout and follow your machine-change rule.Keep track of what you’ve taken out of play.
Record money you’ve physically set aside and keep it separate from your remaining playing funds. Set a profit figure and Lockbox will remind you when a balance you enter reaches it.
Lockbox records and reminds. It does not hold money, restrict access to it, or guarantee a profit. Reminders depend on the balances you enter, not on watching a machine.
Questions
Does Lockbox improve my odds?
No. Slot outcomes are independent, and tracking or changing your betting pattern does not improve the odds.
Does it connect to the slot machine?
No. You record spins and enter balances yourself. Lockbox has no way to read a machine.
Can I stop before a strategy finishes?
Yes. You can end your session at any time, including part-way through a cycle or a run.
Where is my session history stored?
In your browser on the device you used, in its local database. Nothing is uploaded and there is no sync, so sessions recorded on your phone will not appear on another device. Clearing your browsing data for this site deletes them.
Does it work offline?
Not yet. You need a connection to load the app. Once it is open it keeps working without one — spins and balances are saved locally as you go — but reloading or reopening the page needs a connection again. Full offline support is still to come.
Do I need an account?
No. There is no sign-up and no login. Open the page and start a session.
Open Lockbox →
No account, nothing to install. Your sessions stay on your device.Reference cards
Longer write-ups that live on this site, separate from the four strategies in the app.