What 9to5 software does

9to5 software B.V. is a founder-owned Dutch software boutique headquartered in Delft that designs, develops, and maintains custom mobile applications, websites, and backend systems for enterprise, government, and consumer clients. Founded in 2012 by TU Delft graduates Susan Pesman (CEO) and Tom Pesman (CTO), the company operates with a core team of approximately nine full-stack engineers and designers, using a methodology of advisory, design sprints, two-week development sprints, and post-launch maintenance subscriptions branded as 9to5 Elite. The company is privately held and bootstrapped, with no disclosed external funding.

The technology stack is native-first: iOS apps are built in Swift with Xcode and Test-Driven Development, Android apps in Kotlin with Jetpack libraries, web frontends in Vue/Nuxt 3 with TypeScript, and backends in Elixir/Phoenix or Ruby on Rails using GraphQL APIs, PostgreSQL with PostGIS, Redis, and BigQuery. Hosting is split between Google Cloud Platform and Heroku, with CI/CD via CircleCI and Bitrise. The product portfolio includes nummi (an online Rummy game with 500,000+ cumulative users since 2012), ParkMyBike (a smart bike locker app with operator dashboards active in the Netherlands and Belgium), NL-Alarm (an NL-Alert aggregator), OmgevingsAlert (a subscription environmental alert service with AI filters for real estate professionals), Kieswaizer (an AI voting advisor), Apporyx (enterprise iOS distribution), and Poopon. Notable client work includes the 24Baby community platform (over 1 million monthly users across the Netherlands and Belgium), District8 regional news apps, and the ValkCableCare calculator for Van der Valk Solar Systems.

Revenue is generated through a hybrid model. Custom software development and 9to5 Elite maintenance subscriptions drive professional services revenue on a quote-based, project-plus-retainer basis, with intake handled directly by the founders. Proprietary products add subscription and transaction revenue: ParkMyBike charges locker operators and cyclists, OmgevingsAlert offers free and paid Pro tiers, and nummi is freemium with limited monetization. Customer segments span Dutch municipalities and provinces, mid-market enterprises, and end consumers, distributed via direct sales consultation, the iOS App Store, Google Play, and direct web access.

Name

9to5 software

Legal name

9to5 software B.V.

Website

https://9to5.software

Company type

Private

Founded year

2012

Operating status

Operating

Headcount range

1–10 employees

Short description

9to5 software is a Delft-based Dutch software boutique that designs custom mobile apps, websites, and backends for enterprise, government, and consumer clients, and operates proprietary SaaS products including nummi, ParkMyBike, and OmgevingsAlert.

Ownership category

akta.pro rank

Headquarters

HQ city

Delft

HQ country

Netherlands

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B and B2C

Offering type

Software

Cost components

Personnel, Technology or R&D, Infrastructure, Marketing or Sales, Operations

Revenue model

1. Custom Software Development Services: Full-service agency providing tailor-made apps, websites, and platforms for enterprise, startup, and government clients. Services include advisory, design sprints, development in 2-week sprints, app store publishing, hosting, and post-launch maintenance (9to5 Elite contracts). Revenue generated through project-based fees and ongoing maintenance subscriptions.
2. Own SaaS Products (nummi, ParkMyBike, OmgevingsAlert, NL-Alarm): 9to5 develops and maintains its own software products. nummi is a freemium game app with in-app purchase potential. ParkMyBike serves bike locker operators with subscriptions and transaction fees. OmgevingsAlert offers free basic and Pro paid tiers. Revenue from subscriptions, transaction fees, and potential advertising within products.

Pricing tiers

Go-to-market motion3 records

Distribution channels5 records

Marketing channels9 records

Core offering

9to5 software is a full-service software boutique that designs, develops, and maintains custom mobile apps, websites, and backends for enterprise, startup, and government clients. The company also operates its own portfolio of SaaS and consumer products including nummi (a turn-based Rummy game), ParkMyBike (smart bicycle locker platform), NL-Alarm (emergency alert aggregator), and OmgevingsAlert (environmental alerts with AI filters). Service delivery follows a structured methodology spanning advisory, design sprints, 2-week development sprints, app store publishing, scalable hosting, and ongoing 9to5 Elite maintenance subscriptions.

Product overview

9to5 software is a full-service internet boutique that designs, develops, and maintains custom apps, websites, and platforms. Their offering spans both proprietary products and client services. Their own product portfolio includes nummi (a turn-based Rummy game with AI bot), ParkMyBike (smart bike locker management), NL-Alarm (NL-Alert aggregator), OmgevingsAlert (environmental alerts with Pro AI filtering), Kieswaizer (AI-powered voting advisor), Apporyx (enterprise iOS distribution), and Poopon (diaper price comparison). Their client-facing services cover native iOS development (Swift/Xcode/TDD), native Android development (Kotlin/Jetpack), web development (Vue/Nuxt 3/TypeScript), backend development (Elixir/Phoenix, Ruby on Rails, GraphQL, PostgreSQL), UX/UI design (Figma, Midjourney AI), and full-service consulting, hosting, launch support, and maintenance subscriptions. The portfolio is delivered through a structured methodology: concept, advisory, design sprint, 2-week development sprints, and post-launch support.

Differentiator

Problem solved

Functional benefit

Brands

• nummi: Online Rummy game app launched in 2012, allowing players to compete against up to 3 opponents. Has achieved over 500,000 users since launch.
• ParkMyBike
• NL-Alarm
• OmgevingsAlert

Products and services

• nummi Turn-based online Rummy game where players compete against up to 3 opponents to empty their rack first; supports up to 20 simultaneous games, chat, friend invites via social/chat links, multiple login options (email, Facebook, Google, Apple), and includes an AI Granny Bot opponent. Over 500,000 cumulative users since launch.
• ParkMyBike Native app and operator dashboard for reserving, opening, locking, and paying for bicycle lockers via smartphone. Includes a helpdesk dashboard for operators and maintenance partners, WebSocket-based real-time notifications for safe closures, subscriptions for lockers and garages, and an upgraded helpdesk with image sharing, live chat and maintenance workflow (April 2026). Active in the Netherlands and Brussels, Belgium.
• NL-Alarm App for smartphones, tablets, and browsers that stores and displays NL-Alerts using internet connectivity and fixed user locations, providing more reliable reception than the standard cell-tower-based NL-Alert system. Privacy-first architecture keeps location data entirely on the user's device.
• OmgevingsAlert Subscription-based app providing local environmental alerts for Dutch residents (weather, earthquakes, roadworks, municipal announcements), with an OmgevingsAlert Pro tier offering AI-powered natural-language filters for real estate professionals and a dashboard for municipalities. Integrates KNMI weather data.
• Kieswaizer AI-powered voting advisor that provides personalized political matching based on user answers, helping voters identify which political parties best align with their views through natural-language processing of user responses.
• Apporyx Tool that enables Apple Enterprise customers to easily distribute internal iOS applications to different groups of users within their organization.
• Poopon

Quantifiable outcome

• 500,000+ cumulative users for nummi since 2012
• +4 more outcomes

Named customers8 records

Segments4 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability6 records

Feature11 records

Partnerships

Seven partnerships are on record, tiered core and minor.

• Dutch Cycling EmbassycoreStrategic or Co-development Partner · 1 January 2026Since January 2026, 9to5 software joined the Dutch Cycling Embassy network with ParkMyBike. This membership facilitates knowledge exchange and international connections for the ParkMyBike smart bike parking platform, supporting the company's international expansion strategy.
• Google Cloud Platform (GCP)coreTechnology or Integration9to5 uses Google Cloud Platform for larger projects requiring more compute power, CPUs, RAM, database capacity, and traffic. Technologies used include Gemini (multi-modal AI), BigQuery (statistical data), PubSub (push notifications at scale), and Cloudfront CDN. Firebase (Crashlytics, Analytics, Firestore, Remote Config, A/B tests, Testlab, hosting, cloud functions) is used across products.
• FirebasecoreTechnology or IntegrationFirebase is used extensively across 9to5 products for crash reporting (Crashlytics), analytics, Firestore database, Remote Config, A/B testing, Testlab (automated device testing), hosting, cloud functions, and dynamic links (nummi friend invitations).
• FigmacoreTechnology or IntegrationFigma is central to 9to5's design process for all applications and websites. Used for design, prototyping (low-fidelity and high-fidelity), real-time collaboration, and sharing designs across devices. Figma's community offers 1,000+ plugins for customization.
• Apple Developer Tools (TestFlight, CocoaPods, Xcode)coreTechnology or Integration9to5 uses Apple's native developer tools including TestFlight for alpha/beta testing, CocoaPods for dependency management (Alamofire, Firebase, Texture), and Xcode for iOS development, profiling, and app signing.
• Google Play (Android)coreTechnology or IntegrationGoogle Play provides internal and alpha testing channels for Android apps. 9to5 uses Bitrise to automatically deploy to Google Play Store via AAB (Android App Bundle) format.
• cepezedminorStrategic or Co-development Partnercepezed is the architect firm that designed and developed 9to5's circular office building at Nieuwelaan 72, Delft. The building is a showcase project for circular economy and circular construction, fully demountable with reusable components.

Scale indicators6 records

Recent moves8 records

Expansion highlights6 records

Broad incumbents

• Endava: Global technology services company providing custom software engineering and digital transformation. Comparable in custom development and agile delivery model but with substantially larger headcount, geographic footprint and enterprise reach.
• Info Support: Larger Dutch IT services firm offering custom software development, managed services and training across multiple verticals. Comparable in core capability (custom enterprise software) but broader portfolio and significantly larger scale than 9to5.
• Thoughtworks: Global software consultancy delivering custom digital platforms, design and engineering services. Operates in adjacent enterprise/mid-market custom development space but at vastly greater scale and geographic breadth than 9to5.

Direct peers

• Freshheads: Tilburg-based Dutch digital agency building custom mobile apps, web platforms and long-term managed services. Similar size band and full-service development plus maintenance model aimed at mid-market and enterprise clients.
• Q42: Dutch software studio based in The Hague with a comparable mix of bespoke client work and own products/incubations. Similar boutique full-service model covering design, native mobile and web development, and a comparable headcount profile.
• YipYip: Utrecht-based Dutch digital agency focused on apps, websites and platforms for enterprise and government clients. Directly comparable in offering scope (native iOS/Android, web, backend) and Dutch municipal/government client focus.
• Luminis: Netherlands-based technology company delivering custom software, cloud and data solutions. Overlaps with 9to5 on bespoke platform development, cloud-native architectures and long-term client partnerships across enterprise verticals.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

• Xtwitter.com/9to5software
• Facebookfacebook.com/9to5development
• LinkedInlinkedin.com/company/9to5-software
• Instagraminstagram.com/9to5.software

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about 9to5 software