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Know who owes you without opening a spreadsheet.

Know who owes you without opening a spreadsheet.

Kaizer keeps the ledger for every client: amount, frequency, due date and state. You see at a glance who is up to date, who is due soon and who is late, and you send the reminder from that same row. The money still reaches you the way it always has — Kaizer does not process payments.

Money is the part nobody automated.

You program in software, you talk on WhatsApp, and you track payments in a spreadsheet you update from memory. That is where the month someone skipped goes missing, where the awkward conversation shows up three weeks late, and where the Sunday hour goes, working out who owes what.

From setting the charge to recording the payment.

Three moments: you set how much and how often, Kaizer keeps count on its own, and you record what comes in.

Set up charge
Amount$45,000
FrequencyMonthly
First due date05/08
Flag it3 days ahead
Save charge
Step 01

You set how much and how often.

For each client you pick amount, currency, method, first due date, and how many days ahead you want to see them flagged as due soon.

  • Weekly, biweekly, monthly, quarterly or half-yearly
  • Flagged 3 days ahead by default, up to 30
  • New clients inherit your default configuration
Payments2
Sofía M. — late$45,000 · was due 28/07Remind
Lucas R. — due soon$45,000 · due in 3 daysRemind
Juan P. — up to date$38,000 · paid on 01/08Edit
Step 02

Kaizer keeps count on its own.

Every client carries a computed state: up to date, due soon, late or paused. When a due date passes unpaid, the period stays owed and stacks up.

  • One row per client with its state
  • Owed periods that add up by themselves
  • Switch charges off for whoever takes a break
Reminder
How they pay youAlias sofia.kaizer
Arrives viaPush + email
Covers2 periods
Remind
Step 03

You remind, and you record.

You send the reminder from the row, and when they pay you record it with the date it came in. Each payment settles exactly one period.

  • One message per client covering everything owed
  • Arrives as a push notification and an email at once
  • History keeps the amount that was live the day you logged it

Kaizer moves no money. There is no gateway, no checkout, and your client does not pay inside the app: you keep charging in cash, by transfer, or however you do it today. What lives in Kaizer is the ledger — how much, how often, how long they have owed and what they have already paid — plus the reminder, so you do not have to ask for it yourself.

Stop chasing who paid and who did not.

You send the reminder, in one tap.

Kaizer sends nothing on its own. The Remind button sits in the client's row and only lights up when there is something to collect: the charge is about to fall due, or it already is late.

  • One message, not one per periodIf they owe you three months, a single reminder covers all three. Your client gets it as a push notification and as an email.
  • With your payment details insideThe How they pay you text is yours: an alias, a bank number, cash at the gym. It is what reaches your client, so it says how to actually pay you.
  • With a wait between themAfter you send one there are a few hours before the next, so nobody gets three in a row. When the button is off, the tooltip says why.
Reminder
How they pay youAlias sofia.kaizer
Arrives viaPush + email
Remind

History is the answer when someone asks.

Every payment you record keeps its date, its amount and the period it settles. The History tab gathers them all, with a client search and a date-range filter; each client's profile shows only theirs.

Each record keeps the amount that was live the day you logged it, not today's, so raising your rate does not rewrite what you already collected. And if you got one wrong, you can delete each client's latest payment for up to 30 days after recording it.

Client · Sofía M.
Age29
LevelIntermediate
GoalHypertrophy
Adherence · 30d↑4%

Against what you use today.

What changes versus the spreadsheet and the manual WhatsApp nudge.

SpreadsheetWhatsAppEach client's state computed for youFlagged before the due dateReminder carrying your payment detailsPayment history with search and filtersLives next to the client's routine and chatProcesses the money

That last row is deliberate: Kaizer does not collect on your behalf. You keep charging your client the way you do today, and Kaizer keeps the ledger.

See full comparisons

Questions about payments

What Kaizer does with the money, what it does not, and how each part works.

No. Kaizer does not process payments: there is no gateway, no checkout, and your client does not pay inside the app. You keep charging the way you do today — cash, transfer, card, whatever you use — and what lives in Kaizer is the ledger: how much you charge, how often, what is due and what they have already paid. That is what the payments module solves, and it is a different thing from moving money.

Weekly, biweekly, monthly, quarterly or half-yearly. You pick the frequency per client along with the first due date, so two clients can run on different cycles without trouble. Kaizer rolls the period over only when it falls due, and if you pick a date that has already passed the charge starts late on purpose, which is exactly what you need when you are entering someone who already owed you.

No. You send them with the Remind button, from the client's row or from their profile. Two things are required: the How they pay you text has to be filled in, because that is precisely what reaches your client, and the client has to have something to pay — the button only lights up when the charge is about to fall due or already is late. After you send one there are a few hours of wait before the next.

When you send the reminder, they get a push notification and an email with what they owe and with your How they pay you text. It is a single message per client covering every owed period, not one per period. Beyond that, your client never sees your payments panel or anyone else's configuration.

You switch their charges off and the clock stops: while they are off nothing accrues and their configuration stays saved. When they come back, you switch them on again and pick the next due date. One thing to watch: resuming discards any periods left owed, so record what they paid you first. When there is something to lose, Kaizer warns you beforehand.

Yes. You can delete each client's latest payment for up to 30 days after recording it — it is the only row that shows the delete button. Older payments stay fixed on purpose, so the history works as a record. Each one keeps the amount that was live the day you logged it, so updating your rate does not rewrite what you already collected.