Security & dependency updates
Framework, library and runtime patches applied before gaps turn into risk.
Weekly
Maintenance & Support
Maintenance and operations for your software products
A fixed pool of hours each month for updates, monitoring and continued development. No firefighting, no waiting for capacity — predictable operation at a reduced rate.
- < 24 h response
- 99.9% uptime target
- GDPR-compliant
- Cancel monthly
Why a retainer
On-demand or continuous care
The difference between “we'll look when we have time” and a team that knows your system and keeps it running proactively.
No retainer — on-demand
- Every request is re-scoped, estimated and scheduled from scratch.
- You wait for capacity to free up — often days to weeks.
- Security updates only happen once something breaks.
- A higher hourly rate for ad-hoc work.
- Nobody knows your codebase in detail.
With a maintenance retainer
- A fixed pool of hours per month — available immediately.
- Response within defined SLA windows.
- Updates, monitoring and backups run continuously.
- A reduced hourly rate with volume discounts.
- One team that knows your system inside out.
Scope
What a maintenance retainer covers
From security updates to continued development — six building blocks served from the same pool of hours.
Uptime monitoring
Availability, error rates and response times watched around the clock — with alerting.
24 / 7
Backups & recovery
Automated backups with a regularly tested restore process.
Daily
Bug fixes & support
Prioritised fixes within agreed response times — with a direct line to the team.
Per SLA
Continued development
Small features, adjustments and optimisations straight from the monthly pool.
Ongoing
Performance & reporting
Core Web Vitals kept in check, plus a transparent monthly report on every hour spent.
Monthly
Hours calculator
How many hours, what it costs, what it covers
Set the monthly pool of hours — the effective rate drops with volume, and the scope grows with the plan.
Choose a plan
16 hrs
4 hrs40+
What's included
- Security & dependency updates
- Uptime monitoring & alerting
- Backups & recovery
- Critical bug fixes
- Small features & adjustments
- Performance optimisation
- Monthly report
- Response time < 24 h
- Proactive development
- Roadmap & strategy sessions
- Priority SLA < 4 h
- Dedicated point of contact
- Dedicated team
- Custom SLAs & contracts
- Multi-system / multi-app operation
Care
€1,760/ month
Effective hourly rate110 €/hr−8%
Saved vs. on-demand€640 · 27%
Request maintenance
Non-binding estimate. The pool of hours can be adjusted monthly; unused hours roll over by arrangement. The final quote follows a short audit of your application.
FAQ
Common questions about maintenance
What a maintenance retainer means with us — and what it doesn't.
By the numbers
This is hafencity.dev
15+ Experts
Engineers, designers, and strategists working as one practice from our Hamburg HQ.
50+ Clients
Companies across consumer, healthcare, and B2B trust us with their digital products. Long-term partnerships are the default.
97% Recommendation rate
Repeat engagements and references our buyers actually call. Trust compounds when delivery does.
50+ Launches
Custom mobile and web products shipped from concept to maintenance — owned end-to-end by our team.
100% In-house
Strategy, design, and engineering all live at our Hamburg HQ. One team, one project lead, accountable to you from kickoff to launch.
Since 2023
Helping companies ship digital products — and growing alongside the teams we work with.
Next steps
Let's talk about your project
Book a 30-minute discovery call. We'll review your goals, surface unknowns, and outline how we would run the engagement.
Booking calendar (Cal.com)
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