Case studies

Three businesses, a night at a time.

Every other software company on this page of Google would have invented a plumber called Dave and a 47% improvement. We have not. Heoka is early and has no customer stories it is allowed to publish, so here is the honest version: three worked scenarios, built from situations UK firms actually describe to us, showing exactly what happens overnight and what lands on your phone in the morning.

Illustrative scenarios, labelled as such.No invented clients, quotes or percentages.Real customer stories replace these when there are any.
Before you read on

Why there are no testimonials here.

Two reasons. The first is that we do not have any worth showing yet, and a quote from a company that does not exist is a lie you would find out about later. The second is that inventing them is against the law: the Digital Markets, Competition and Consumers Act 2024 bans fake reviews outright, and the CMA can fine up to 10% of turnover without going to court.

So the page you are reading shows the mechanism instead of the applause. If you want proof rather than a story, the place to look is what happens when you say no, which sets out the send boundary, the data boundary and the gaps we have not closed yet.

01 · Scenario · Commercial subcontractor, 14 staff

The owner is on site all day. The ledger waits until Sunday.

Illustrative example. Not a named customer and not a claimed result.

Mechanical and electrical fit-out. Stage payments on 30 and 60 day terms, retention held on most jobs, and a main contractor who pays on their run date rather than your due date. Invoices go out of Xero on time. Nobody follows them up until the owner opens the laptop at the weekend.

Where it goes wrong

The bit nobody gets round to

Chasing needs the job reference, the application number and the right person in accounts. That is ten minutes of digging per invoice before a word is written, so it does not happen on a Tuesday.

Overnight

What Harness does while it is shut

  • Reads the Xero ledger and the sent folder after close of play.
  • Sorts genuinely overdue from waiting on the contractor's payment run.
  • Pulls the invoice number, the amount and the last reply into each draft.
  • Writes the right rung: reminder, firm chase, or interest note.
The morning

What you actually do

A short list on the phone over the first coffee. Each one is read, then sent, edited or skipped. The ones that are simply not due yet are not in the list at all.

The line it will not cross

Your call, every time

The main contractor relationship is the business. So drafts wait for the owner to read the exact words. Approval is per message, every time.

02 · Scenario · B2B agency, 6 people

Nobody wants to be the one who chases a client they like.

Illustrative example. Not a named customer and not a claimed result.

Retainers and project milestones. Invoices are small enough that chasing feels petty and frequent enough that the total is not small. The account lead knows the client personally, which is exactly why the reminder never gets written.

Where it goes wrong

The bit nobody gets round to

It is not a memory problem. It is an awkwardness problem. The email needs to sound like the person who normally writes to that client, not like a debt letter.

Overnight

What Harness does while it is shut

  • Watches the accounting software for milestones that passed their due date.
  • Matches the tone to the thread already running with that client.
  • Keeps the ask to one line and one number.
  • Holds anything with an open query on the invoice out of the queue.
The morning

What you actually do

The founder reads four drafts, changes a sentence on one, skips one because the client called yesterday, and sends the other two. Under a minute.

The line it will not cross

Your call, every time

The awkward part stays human. The software writes it, the person decides whether the relationship can take it today.

03 · Scenario · Trade supplies, 20 plus accounts

Forty small invoices, none of them worth an afternoon.

Illustrative example. Not a named customer and not a claimed result.

Repeat trade accounts buying weekly at £300 to £1,500 a time. Any single overdue invoice is too small to stop the day for. Forty of them is a month of wages sitting in other people's banks.

Where it goes wrong

The bit nobody gets round to

The work is volume, not difficulty. A credit controller would fix it and cannot be justified on the margin, so it falls to whoever has a quiet hour, which is nobody.

Overnight

What Harness does while it is shut

  • Groups overdue invoices by account instead of chasing one at a time.
  • Writes one message per customer covering everything outstanding.
  • Escalates an account that has ignored two chases rather than repeating the first.
  • Leaves accounts in dispute alone.
The morning

What you actually do

Twelve drafts, one per account. Approved as a batch after a read, apart from the two on stop.

The line it will not cross

Your call, every time

No account is escalated automatically. Putting somebody on stop is a commercial decision, so it is offered, never taken.

04 · The pattern

Different trades. Same four steps.

Read the three together and the business type stops mattering. What changes is the wording and the rhythm. What does not change is the shape.

One

It reads, you sleep

The ledger and the sent folder, every night, whether or not anyone had time.

Two

It sorts late from not due

Chasing somebody who is inside terms is how you lose a customer. It checks first.

Three

It writes in your words

The right rung of the ladder, in the tone that thread is already in.

Four

You tap, or you do not

Drafts wait for you to approve, edit or skip. You can let routine reminders send on their own.

05 · The obvious questions

Asked and answered.

Are these real Harness customers?

No. These are worked scenarios built from common UK small business situations, and they are labelled as such on the page. Heoka is early and has no published customer stories yet. When there are real ones, with permission and real names, they will replace these and the page will say so.

Why not just publish testimonials?

Because we do not have any we can stand behind, and made-up praise is both a lie and a breach of the Digital Markets, Competition and Consumers Act 2024, which bans fake reviews. Showing the shape of the work honestly is more use to you than a quote from somebody who does not exist.

What kinds of business does Harness suit?

Businesses that invoice other businesses on credit terms, use Xero, and have nobody whose job it is to chase. That covers trades and subcontractors, agencies and consultancies, and trade suppliers with repeat accounts.

Can I see it working on my own ledger?

Yes, and it is the fastest way to judge it. Connect your accounting software, let it read a night of your own overdue invoices, and read the drafts it writes. 7 days free, then £19 a month for the whole company. Drafts wait for you to approve, edit or skip. You can let routine reminders send on their own.

The only case study that counts is yours.

Connect your accounting software, let it read one night of your own overdue invoices, and judge the drafts it writes. 7 days free, then £19 a month for the whole company. Drafts wait for you to approve, edit or skip. You can let routine reminders send on their own.

Already using Harness and happy to be quoted? Email connor@heoka.co.uk and this page changes.