Most business accounting systems are written to cover "everything in general" and then get stretched to fit a specific business, with all the workarounds and lost detail that implies. RentOS is built the other way around — designed from day one for rental and entertainment: electric cars, quad bikes, trampolines, VR, play rooms, quest rooms, amusement parks. It isn't one program with a single "accounting" button, but a set of modules that live in one dashboard and write to one shared money journal. Which modules are on depends on what's actually happening at your point, not on what developers imagined somewhere else.
How Revenue Is Calculated — a Different Mode for Every Format
For electric cars and quad bikes with a mechanical trip counter, there's the "Counters"mode: revenue is calculated from the difference between readings, not eyeballed. For trampolines sold "by jump," go-karts, and other one-off rides with no physical counter, there's the "Launches"mode, with timed and untimed rates and protection against starting two rides on the same asset at once. For play rooms and VR clubs, where the value is in time spent, there's the "Stays"mode, with wristbands and real-time start/stop tracked by the server, not the operator's memory. And where the sale and the actual visit happen at different times — quest rooms, one-off events — there's the "Tickets" mode, with orders, a short number, and optional redemption.
Four completely different scenarios — four different calculation logics. But in the Owner's reports it isn't four separate screens to reconcile by hand: it's the same dashboard, the same "Difference" between the till and the calculation, the same results submission at the end of the shift.
Not Just Rentals
Many points also sell something on the side — coffee, snacks, souvenirs. For that there's the "Products" module, with soft stock levels, a revision process, and its own independent till reconciliation that isn't tied to zone results submissions. And everything that happens across any module — rentals, tickets, products — flows into one shared journal, "Money"with no separate tills to reconcile by hand with a calculator at the end of the month.
Staff and Internal Processes
Shifts, rates, and advances for employees are handled by the "Work Time" module — with a running "to be paid out" balance instead of a separate payroll notebook, and a real check of the till balance before paying out an advance. Employees and candidates confirm safety training with a real electronic signature through "Instructions" — with a date, IP, and a ready-made PDF for every signature, instead of a verbal "we explained everything." And short assignments for a specific point — "pump up the wheels," "go pick up the change" — are kept on a simple board, "Tasks"with no due dates, no priorities, and no extra fields nobody will fill in on the run.
A Storefront Online — Without a Separate Website
Every tenant has the "Landing Page" module — a public business page that assembles itself from the dashboard's own data (prices, points, working hours, photos) and updates along with it, with no separate "publish the site" step and no separate contractor to pay every time prices change.
Regulars and Communication Without Yet Another App
The "Clients" module gives every guest one wallet by phone number that works instantly across every point and every format — rides, time, tickets, products. And checking a balance or getting a summary can be done right in Telegram — there's a botthat requires no technical setup from the Owner, and no extra app install from the client.
Runs on Whatever Device Is Already at Hand
RentOS doesn't need to be installed from an app store, and you don't need a special till or POS terminal. It's a web app that's added to the screen with one link or QR code — an old tablet, a regular smartphone, or a computer at the counter, Android or iOS, it doesn't matter. A new device at a point is added with one scan — say, on the day a new employee starts — and from that moment it's counted as that point's device.
The employee themselves doesn't need an email or a separate account — just a short PIN code that the Owner comes up with. Someone gets let go — deactivate the PIN, and access closes instantly, with no "what were their passwords and where do I change them." Setting up a new employee is the same thing in reverse: a couple of minutes in the Owner's dashboard, and the person can already work on the point's device.
An Interface You Don't Have to Fight
Every screen speaks the same visual language: the same spacing, the same buttons, the same "bottom sheet" logic for every creation form — whatever you're adding, a zone, a rate, or a task, it never looks like pieces glued together from different programs. Every money amount and number is digit-aligned — a small thing that matters exactly at the moment you're staring at a column of numbers during a till reconciliation and don't want them to "jump around."
The Owner's dashboard is light by default, for calm work with reports; the employee's app at the point is dark, because the screen gets looked at in the sun, in the evening, and all day long — not in a quiet office. Both can be recolored to fit: the accent color is chosen from a few presets at sign-up, so the dashboard feels like your own tool, not a faceless system "for everyone." And if you have an international team, every employee can switch the interface language just for themselves, out of fifteen available, without touching anyone else's setting.
The General Principle
The same idea runs through every module: the system calculates what should have come in, and the person only enters what actually ended up in the till. The gap between those two numbers shows up immediately, tied to a specific shift and a specific employee — not at the end of the month, when it's already too late to sort anything out. That's the actual difference between "paper bookkeeping that just records the past" and a system that helps you stop losing money right now.
What's Next
You can read about each module separately via the links above — they go into more detail, with the mechanics and examples. But the fastest way to see whether RentOS fits your point is not to read about it, but to open the dashboard and try it on real data: your own zones, your own assets, your own prices. Signing up just takes a business name, an email, and a password — no calls to a sales manager and no card at this step.
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