Parking lot management app

Entry, exit, fee and receipt. All on one phone.

Carpos is an Android app built for small and mid-sized parking lots. Log the vehicle, let the fee be calculated from your rates at exit, and hand over a receipt from a Bluetooth printer. No internet required.

  • Free for offline use
  • Works without internet
  • Android 7.0 and later
Carpos home screen: vehicles inside, today’s revenue and entry/exit buttons
Exit receipt — as it comes out of the printer
How it works

A vehicle’s visit, in three steps.

  1. Vehicle entry screen: plate field, camera button and vehicle type
    01

    Entry

    Type the plate or scan it with the camera and pick the vehicle type. Entry time is recorded automatically; optionally print an entry ticket carrying the plate as a QR code.

  2. Vehicle exit screen: plate, entry time, duration and estimated fee
    02

    Exit

    Look up the plate. Duration and fee are calculated from that vehicle type’s rates; every started hour is charged. You can set free first minutes and a daily maximum.

  3. Exit receipt — as it comes out of the printer
    03

    Receipt & record

    The exit receipt is printed with your business name, entry and exit times, the amount and a QR code of the plate. The visit is added to the end-of-day report at the same time.

Features

Everything the daily work needs. Nothing more.

Plate scanning
Plates are recognised on the phone itself; images are never sent to a server and no internet is needed.
Rates per vehicle type
Cars, minibuses, vans, motorcycles… Set a different hourly rate per type and per duration band.
Free minutes & daily cap
Leave the first minutes free for short stops and cap the daily charge for long stays.
Bluetooth thermal printer
Entry and exit receipts on ESC/POS-compatible 58 and 80 mm printers.
Monthly subscribers
Record a subscriber’s plate, end date and monthly fee. Subscriber vehicles exit free of charge; expired ones are flagged.
Extra services & lost tickets
Add extra services such as a car wash at exit, apply a fixed lost-ticket fee, and mark payment as cash or card.
Live occupancy
See vehicles inside, their entry times and elapsed time in one list; set a capacity to show free spaces on the home screen.
Revenue reports
Visits, total revenue, average stay and breakdown by vehicle type for any date range.
Works offline
In offline mode every record stays on the phone and can be backed up. Keeps working in basements and dead zones.
Optional cloud mode
For multiple devices and staff: records in one place, followed live on the web panel, with shifts and cash-drawer reconciliation.
Pricing

Offline use is free. Always.

No fee, no trial period and no record limit for the single-device version. When you need a team and multiple devices, there is cloud mode.

Cloud

Early access

Pricing to be announced

For multiple devices and staff.

  • Everything in Offline
  • Multiple devices on one account
  • Web admin panel with live occupancy
  • Staff accounts: admin, operator, viewer
  • Shifts and cash-drawer tracking
Request early access

Records cannot yet be moved between offline and cloud; you choose one when you start.

FAQ

Frequently asked questions

Is Carpos really free?

Yes. Offline mode (single device, no internet) is free, with no trial period or record limit. Cloud mode is a separate, optional service.

Does it need an internet connection?

Not in offline mode. All records are stored on the phone, so it works in basements and low-signal areas. Cloud mode needs internet.

How is the fee calculated?

The stay is converted to hours, rounded up and multiplied by the vehicle type’s hourly rate. Example: 2 h 51 min at ₺15/hour is 3 × 15 = ₺45. Duration-based rates, free first minutes and a daily cap can be configured.

Which printers does it work with?

Bluetooth thermal receipt printers that support the ESC/POS command set (58 mm and 80 mm). Check ESC/POS and Bluetooth support before buying. The app also works without a printer.

How does plate scanning work?

Point the camera at the plate and the text is read by an on-device recognition model. Images are not sent to a server and no internet is needed. You can correct the plate before saving.

Where is my data stored?

In offline mode, only on your phone; uninstalling the app deletes the records, so take regular backups from Settings → Backup and keep the file somewhere safe. In cloud mode, records are kept on Piyanos servers and transferred over an encrypted connection (HTTPS).

Does it run on iPhone?

Currently Android only (7.0 and later). An iOS version is planned.

Can I move to cloud later?

Yes, you can switch mode in settings. Moving offline records to the cloud is not supported yet, so you start fresh in the cloud.

Put your parking lot on record today.

Install, enter your vehicle types and rates, and log the first vehicle. Setup takes a few minutes.