Specialization · Maintenance & Support

Software maintenance: keeping custom software secure and operational for the long term

We take care of bug fixes, security updates, adjustments and further development of your custom software – even if someone else originally built it. We set out scope, response times and allowance in a clear maintenance contract.

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Short & clear

Software maintenance covers all the work that keeps software usable after it goes live: fixing bugs, applying dependency and security updates, adapting the software to new systems and requirements, and developing features further. Nano Concepts takes over the maintenance of custom software, web applications and apps with a dedicated contact person, allowance and response times defined in the maintenance contract. Ongoing maintenance contracts are quoted individually based on scope in the Enterprise package, while taking over third-party software with a code review and stabilization falls under the Starter package from €2,500 or Professional from €8,000, depending on effort.

Software maintenance with Nano Concepts

Software maintenance keeps an application usable, secure and adaptable in the long term after go-live. The ISO/IEC 14764 standard distinguishes four types: corrective maintenance fixes bugs, adaptive maintenance adapts the software to new operating systems, interfaces or requirements, perfective maintenance improves functions and usability, and preventive maintenance eliminates weaknesses before they cause problems. In a software maintenance contract, we define which of these services you need and to what extent – for custom software, web applications, portals and apps.

01

The upkeep of dependencies is especially underestimated. Modern software consists to a large extent of frameworks and libraries such as Laravel, Symfony, React or Node.js, which regularly receive security updates and whose older versions eventually lose support. We keep these dependencies up to date, verify updates with automated tests and schedule larger version jumps in good time. That way you avoid technical debt piling up over the years until an upgrade eventually becomes as costly as a rebuild.

02

We also take over software that other service providers or former employees developed. First we secure the source code, access and documentation, review code quality, tests and servers, and write down any missing knowledge. Then we stabilize the system and start ongoing maintenance with a dedicated contact person, a ticket system and an allowance for further development. That makes software maintenance costs predictable: you pay for a defined scope instead of expensive emergency call-outs. If replacing the software is more economical than continuing to maintain it, we will tell you openly.

Story

Software maintenance in 9 slides

Just swipe through: what Software maintenance delivers, what we build for you, and how other companies benefit.

01 / 09

Specialization · Maintenance & Support

Software Maintenance. Secure. Fast. Stable.

Software maintenance covers all the work that keeps software usable after it goes live: fixing bugs, applying dependency and security updates, adapting the software to new systems and …

  • Free initial consultation
  • Transparent, fixed price if you like
  • Reply usually within 24 hours
nanoconcepts.de
02 / 09

How you can tell

Does this sound familiar?

Typical signs that Software maintenance is worth it:

  1. 01The developer or service provider who built your software is no longer available.
  2. 02Your software is based on framework or PHP versions that no longer receive security updates.
  3. 03Bugs are only worked around rather than fixed because nobody dares to touch the code.
  4. 04New requirements have been piling up for months because responsibility and budget for further …
nanoconcepts.de
03 / 09

Your benefit

What you get out of it.

Know-how securedKnowledge about your software no longer depends on a single person, but is documented and …
Predictable maintenance costsA clearly defined scope replaces expensive emergency call-outs and surprise large projects.
Secure in operationKnown security vulnerabilities in frameworks and libraries are closed promptly.
nanoconcepts.de
04 / 09

Scope of services

What we deliver for you.

Bug fixes, security updates, adjustments and further development of your custom software – with a clear …

  1. Bug fixing
  2. Security updates & dependencies
  3. Adaptation to new conditions
  4. Further development
  5. Takeover & documentation
  6. Monitoring & maintenance report
nanoconcepts.de
05 / 09

Use cases

Here's what that looks like in practice.

Healthcare & CareA home care service has its mobile documentation app maintained and adapted to new iOS and Android versions.
Real EstateA property management company has its tenant portal with damage reporting and document storage maintained and extended …
Finance & InsuranceA financial services provider has its advisory tool maintained and its calculation logic and forms adapted to changed …
nanoconcepts.de
06 / 09

Process

A clear process. No surprises.

  1. 01
    Takeover & assessmentWe secure source code and access, review code, tests, servers and …
  2. 02
    StabilizationWe tackle critical security updates, known bugs and missing backups first.
  3. 03
    Maintenance contractWe put services, response times, allowance and reporting channels in writing.
  4. 04
    Ongoing maintenanceBug fixes, updates and adjustments run through a ticket system within the …
nanoconcepts.de
07 / 09

Common question

Good question. Clear answer.

How much does software maintenance cost?

Nano Concepts

Software maintenance costs depend on the size and condition of the application, the response times you want and the allowance for further development.

All questions & answers
nanoconcepts.de
08 / 09

Packages

Three packages. One plan.

  • Starterfrom €2,500Ideal for landing pages, simple web applications and prototypes.
  • Professionalfrom €8,000For complex web applications, portals and tailor-made software …
  • EnterpriseCustomFor large projects, system landscapes and long-term development …

Non-binding guidance – you will receive your quote after the free initial consultation. View pricing

nanoconcepts.de
09 / 09

Let's get started

Unlock your full potential.

Tell us about your project – we usually get back to you within 24 hours with an initial assessment.

Request a project +49 176 84843252 info@nanoconcepts.de

TOGETHER. DIGITAL. SUCCESSFUL.

nanoconcepts.de
01 / 09

Typical signs that Software maintenance is worth it

  • The developer or service provider who built your software is no longer available.
  • Your software is based on framework or PHP versions that no longer receive security updates.
  • Bugs are only worked around rather than fixed because nobody dares to touch the code.
  • New requirements have been piling up for months because responsibility and budget for further development are missing.
  • There is no up-to-date documentation, and the knowledge about the system rests with a single person.
Scope of services

What we deliver for you

Bug fixes, security updates, adjustments and further development of your custom software – with a clear maintenance contract.

Bug fixing

We analyze and fix reported bugs in a traceable way through a ticket system – with feedback on the cause and the solution.

Security updates & dependencies

We keep frameworks, libraries and runtime environments up to date and verify every update with automated tests.

Adaptation to new conditions

When interfaces, operating systems, browsers or legal requirements change, we adapt your software in good time.

Further development

We implement new features and improvements in a plannable way through an agreed allowance or as a separate sub-project.

Takeover & docu­menta­tion

For existing software: code review, securing source code and access, and documenting architecture and operating procedures.

Monitoring & maintenance report

Error monitoring in production and a regular report on completed work, open risks and recommendations.

Area

More from Maintenance & Support

Updates, monitoring, backups and further development – so websites, apps and software run reliably.

Main service

Maintenance & Support

Updates, monitoring, backups and further development – so websites, apps and software run reliably.

Learn more
Specialization

WordPress Maintenance

Core, theme and plugin updates, backups, security and monitoring for your WordPress website – tested and logged.

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Your benefits

Why companies choose us

Know-how secured

Knowledge about your software no longer depends on a single person, but is documented and shared across the team.

Predictable maintenance costs

A clearly defined scope replaces expensive emergency call-outs and surprise large projects.

Secure in operation

Known security vulnerabilities in frameworks and libraries are closed promptly.

Further development instead of standstill

New requirements from day-to-day business flow continuously into the application instead of piling up for years.

Use cases

Software maintenance in your industry

Here's what Software maintenance looks like in typical industries – concrete examples from everyday business.

Industry & Manu­fac­turing

A manufacturer has its in-house order and production control system maintained and adapted to a new ERP version.

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Retail & E-Commerce

A wholesaler has its B2B ordering portal continuously maintained and its product imports adapted to new supplier formats.

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Logistics

A logistics provider has its dispatch software maintained, as its interfaces to shipping carriers have to be updated regularly.

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Healthcare & Care

A home care service has its mobile documentation app maintained and adapted to new iOS and Android versions.

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Real Estate

A property management company has its tenant portal with damage reporting and document storage maintained and extended with new features.

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Finance & Insurance

A financial services provider has its advisory tool maintained and its calculation logic and forms adapted to changed requirements.

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Services & Consulting

An engineering firm hands the maintenance of its project time tracking over to us after the original developer left the company.

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Skilled Trades

A tradesperson's business has its installer app with offline mode maintained and adapted to new smartphone generations.

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Startups

A startup outsources the maintenance of its platform to us, so its own team can concentrate on new product features.

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Education & Research

A training provider has its participant management maintained and the exports for billing and statistics adapted to new requirements.

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Tourism & Hospitality

A tour operator has its booking backend maintained and its connections to hotel and payment providers kept up to date.

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Media & Creative Industries

A publisher has its custom subscription and editorial system maintained, security updates applied and new distribution channels connected.

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Process

How your project works

  1. Takeover & assessmentWe secure source code and access, review code, tests, servers and documentation, and record open bugs and risks.
  2. StabilizationWe tackle critical security updates, known bugs and missing backups first.
  3. Maintenance contractWe put services, response times, allowance and reporting channels in writing.
  4. Ongoing maintenanceBug fixes, updates and adjustments run through a ticket system within the agreed framework.
  5. Review & planningAt regular intervals, we discuss completed work, technical risks and the next stages of development.

Technologies & tools

GitGitLab CIGitHub ActionsRenovateSentrySonarQubeDockerJiraLaravelNode.js
FAQ

Frequently asked questions about Software maintenance

Software maintenance costs depend on the size and condition of the application, the response times you want and the allowance for further development. We therefore quote ongoing maintenance contracts individually based on scope in the Enterprise package. The one-time takeover of third-party software with a code review and stabilization falls under the Starter package from €2,500 or Professional from €8,000, depending on effort; the exact quote follows after the free initial consultation.

A software maintenance contract should regulate the scope of services, response and processing times, reporting channels, allowance, billing and how further development is handled. Access to source code and documentation as well as provisions for the end of the contract are also important. We help you word the technical content in plain language; the legal review is for your legal counsel. This does not replace legal advice.

Maintenance preserves the existing functionality: fixing bugs, applying security updates and adapting the software to changed environments. Further development extends the software with new features. In practice, we combine both in one contract, with a clear separation in the allowance.

Yes. We first review code, tests, dependencies and servers and document the current state. Then we stabilize the software and take over ongoing maintenance – or recommend modernization if continued maintenance would be uneconomical.

Assessment and stabilization usually take a few days to a few weeks, depending on the size and condition of the application. After that, ongoing maintenance starts within the agreed framework. We give you a realistic schedule after the initial review.

We set response and processing times individually in the maintenance contract, graded by the severity of the bug. Thanks to error monitoring, we detect many problems before they are reported. Binding commitments apply where they have been agreed in the contract.

Locations

Software maintenance in your city

We support companies across Germany – remotely and, where needed, on site. Choose your city:

Locations

DudenhofenSpeyerGermersheimHaßlochHockenheimSchifferstadtSchwetzingenBad DürkheimLudwigshafen am RheinMannheimNeustadt an der WeinstraßeWalldorfBruchsalFrankenthal (Pfalz)HeidelbergLandau in der PfalzWieslochKarlsruheWeinheimWormsStuttgartFrankfurt am MainNurembergCologneDüsseldorfDortmundEssenDuisburgMunichHanoverLeipzigBremenDresdenHamburgBerlinAll locations
Guides & comparisons

Know-how on Software Maintenance

Costs & budget

How much does a website cost per month – and per year?

The monthly cost of a website is made up of the domain, hosting, email mailboxes, possible licenses for themes, plugins, or tools, and maintenance and updates; an SSL…

Learn more
Costs & budget

How much does website maintenance cost?

The cost of website maintenance depends on the system, the number of extensions, the desired scope of services and the agreed response times.

Learn more
Step by step

How can I improve my website’s loading time?

You improve your website’s loading time fastest by measuring on a mobile device first and then removing the biggest bottlenecks: shrink oversized images and deliver…

Learn more
Comparison

Contract for work (Werkvertrag) or service contract (Dien­stver­trag) in software development?

Under a contract for work (Werkvertrag, §§ 631 et seq.

Learn more
Related

Related services

Maintenance & Support

Updates, monitoring, backups and further development – so websites, apps and software run reliably.

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Custom Software

Software built around your workflows instead of standard tools with compromises – for replacing Excel, internal tools and specialized business applications.

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Web Applications

Customer portals, dashboards and SaaS platforms that run in the browser – no installation, on any device.

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Web Security

Find and fix vulnerabilities – for websites, online stores, customer portals and custom web applications.

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Digital Glossary

Terms related to Software maintenance, briefly explained

DDoS attackDNS (Domain Name System)Data processing agreement (DPA, Auftragsverarbeitungsvertrag)FirewallGDPR (General Data Protection Regulation)ISO 27001Logging & log managementManaged hostingAll terms
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09 · Scenario · approx. 50 seconds

The backup nobody checks

Frank thinks he has a backup – the last one is seven months old and was never tested. Data in the cloud with a data centre in Germany or the EU, automatic backups and monthly restore tests.

ServiceCloud, backup & databasesForOffices, law firms & SMEs
Sounds familiar? Start the needs assessment
Read transcript

Frank has a server.
And a backup.
Or so he thinks.
Monday morning.
Server dead.
All the plans: gone?
And the backup?
Last backup: 7 months ago.
Never tested.
Here’s what’s going wrong.
One failure, and everything stops.
NANO CONCEPTS moves the data to the cloud.
Data center in Germany or the EU.
Backups: automatic. And tested.
Every month: a test restore.
So it works when it counts.
Frank works from anywhere.
And sleeps soundly.

Get the right quote in 60 seconds

Needs analysis: Software Maintenance

Answer a few short questions – we usually get back to you within 24 hours with an initial assessment.

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