Software for rental, car subscription and fleets.
Booking, handover, return, damage documentation and billing — digital, seamless and tailored to your process. From a team that builds and runs its own rental software, trafe.
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Sound familiar?
Handover on paper
Reports, photos and signatures end up in folders and phone galleries — and in a damage case the one photo you need is missing.
Isolated tools
Booking tool, calendar, Excel and accounting don’t talk to each other. Every booking is handled several times.
Sensitive data
Driving licence, ID and payment data are scattered — a risk for data protection and liability.
Off-the-shelf doesn’t fit
Car subscription, long-term rental, B2B terms: packaged software forces you into someone else’s process.
What we build for you
Booking & order flows
Online booking, car-subscription and B2B order flows with your rates, deposits and terms.
Digital handover & return
Tablet report with photos, mileage, fuel, damages and signature — instantly sent to the customer as PDF.
Customer & document checks
Capture driving licence and ID data in a structured way and store it securely — with clear access rights.
Billing & receivables
Invoices, extras, damages and dunning automated — with export for accounting and DATEV.
Fleet & availability
Vehicles, schedules, maintenance and utilisation in one view instead of five spreadsheets.
Integrations
Connections to CRM, accounting, payment providers and existing systems — instead of duplicate entry.
Why we know this industry
trafe — our own product
We build and run trafe, the app for digitalising car rental companies: booking, handover, return, documentation and billing in one tool.
Learn more →HUK-COBURG — HUK DRIVE
For a leasing and car-subscription platform we designed architecture, features, processes and data-protection requirements in a two-day workshop.
Learn more →Hands-on in our own group
Our group includes simplii, a mobility brand with a car-subscription offer — we know the processes beyond specification documents.
More projects from this industry
7 references
Data protection is not a side issue here
Rental companies process ID, licence and payment data. That is why our software runs in German data centres certified to ISO 27001 & BSI C5, on our own container infrastructure with self-hosted storage — and on request, source code and data are yours.
Frequently asked questions
Circle from Ingolstadt builds and runs custom software for rental, car subscription and fleets — from booking flows and digital handover to billing. With trafe, the team runs its own software for digitalising car rental companies.
When rates, subscription models, B2B terms or processes don’t fit the standard scheme, adapting to someone else’s software costs time permanently. Custom software maps your own process and connects existing systems. A combination is often sensible: proven building blocks plus custom extensions.
In German data centres certified to ISO 27001 and BSI C5, on our own container infrastructure with self-hosted storage — with clear access rights. On request, clients receive source code and data.
With a free first call via Microsoft Teams. If useful, a workshop follows where processes, requirements and effort become concrete — only then does development start.