How to Make an App for Free: A Guide for UK Businesses

Building an app no longer has to start with a development budget. Free no-code builders, open-source frameworks and AI tools can turn a simple idea into a working prototype, giving businesses a way to test demand before paying for custom development.

However, “free” can mean anything from a permanent but restricted plan to a short trial that becomes paid before launch. This guide explains how to make an app for free, which tools are genuinely usable at £0, and how to create an app for free without getting caught by publishing fees, platform limits, or unexpected upgrade costs.

You can build and test a basic app without paying for development software. Costs usually appear when you need more capacity, advanced integrations or native app-store distribution. Projects that already require custom functionality can instead start by comparing this list of top UK mobile app developers.

Can you make an app for free? Yes, if you build it yourself using a permanent free plan or open-source tools. You will still invest your time, work within the platform’s limitations, and may need to pay a fee to publish the app in an app store.

For businesses, this approach is most useful for testing an idea with real users before investing in full development.

Free-forever plans vs. free trials

The permanent free plan does not have any expiration date but comes with some storage, user, integration, branding, and/or publishing restrictions. A free trial gives temporary access to some or most paid features for a limited period, often 14–30 days.

Before starting, check the Pricing page of the platform. Some of them offer you “Start for free,” but actually you get a trial version that will not be deployable or maintainable without a subscription.

Open-source frameworks: free code, paid time

Open-source frameworks are free to use, but building an app with them requires programming skills. Someone still needs to write the code, connect services, configure hosting, fix bugs, and maintain the product.

Technical founders can keep direct costs low by handling this work themselves. Businesses without an in-house development team may instead need to hire developers or compare the best app development agencies in London for more complex projects.

Web app, PWA, or native app: which can be truly free?

A web app or PWA can reach users without app-store fees. Native distribution requires a developer account.

A web app can cost £0 to launch when free hosting and a subdomain are available. A no-code app builder may include both as part of its free plan.

A PWA (Progressive Web App) can be installed directly on a user’s home screen without an app store. On Apple devices, Home Screen web apps have supported Web Push since iOS 16.4, with the user’s permission.

Native distribution through the Apple App Store or Google Play requires a developer account.

You do not need programming skills to test a simple app idea. This section explains how to make an app for free without coding, from defining the core feature to building, testing, and publishing the first version.

Step 1: Define one problem and one core feature

Start with one customer problem and one feature that addresses it. Free plans are easier to work within when the first version has a limited scope. Before building, define:

• Who will use the app?
• What action should they complete?
• What result will show demand: bookings, submissions, repeat visits, or another measurable action?

Do not add every planned feature to the first version. Free plans have limits, and an oversized MVP makes it harder to determine if the core idea has demand.

Step 2: Map your screens with a free wireframe

A wireframe is a basic drawing of what is shown on each page and how users navigate through the pages. Paper is great for this, or you can use the free plan of Figma or Miro.

This diagram should address the following questions:

• What does the user see first?
• Where is the main button or action?
• What happens after they click it?
• How many steps does completing the main task take?

In this stage, focus more on navigation flow than colours, fonts, and other design details.

Step 3: Choose a free app builder that matches your use case

Choose a builder based on what the app needs to do. A simple internal tool may only need forms and a database, while a customer-facing app could require payments, GPS, camera access, or push notifications.

When comparing free plans, check:

• user and record limits;
• platform branding;
• web, PWA and app-store publishing options;
• data export options.

The next section compares popular free app builders and the limitations of their free plans.

Step 4: Set up your data before you design

Most business apps rely on structured data, such as customer details, bookings, products, orders or requests. Define the records you need and how they relate to one another before designing the interface.

Start with the database included with the builder, or use Google Sheets if supported by the builder. Some connectors to external services like Airtable and SQL databases may be available only on paid tiers.

Step 5: Build from a template or a prompt

The fastest option is often to start with a template for a catalogue, booking system, directory, or request process. Many no-code platforms use a drag-and-drop editor, allowing you to arrange screens and interface elements visually. AI app builders can also generate an initial app from a written description.

In both cases, the application you receive is only a starting point. Try to adapt the application screens and processes to your business needs, not vice versa.

Step 6: Test with real users at zero cost

Share a preview link or PWA with 5–10 real customers or employees. Track whether they complete the main action, where they encounter problems, and whether they return to the app.

Feedback from friends or colleagues can be useful, but it does not provide reliable evidence of demand. Testing with potential users gives you a better indication of how the app performs in practice.

For native apps, testing through TestFlight on iOS or Google Play requires the corresponding developer account.

Step 7: Publish your app for free

The easiest way to launch without publishing fees is as a web app or PWA. Users can access it through a direct link, QR code, or the subdomain provided by the app builder.

Before launch, prepare:

• app name and icon;
• privacy policy;
• screenshots;
• a short app description.

Android apps are submitted and managed through Google Play Console, where developers can prepare store listings, manage releases, and access testing tools.

If an Android app needs custom features, broader device testing or help with the release process, you can compare Android app developers in the UK before moving from a prototype to a production version.

Free app builders differ in what you can actually do without upgrading. Some support a working web app, while others limit the free option to building and testing.

Glide

Glide is very effective when creating prototypes based on structured business data, such as directories, dashboards, and internal workflows. The Free tier that Glide currently offers includes 10 projects and two members.

Pros: fast setup for data-driven apps; integrations included.

Cons: the Free plan allows zero published apps, so you can build and test but cannot share the finished app with users.

Adalo

Adalo is a no-code app builder with a built-in database. Its Free Forever plan includes unlimited screens and up to 500 records per app, making it suitable for testing booking systems, directories, and customer portals.

Pros: built-in database; no credit card required for the Free plan.

Cons: publishing to the App Store and Google Play requires a paid plan.

Thunkable

Thunkable is suited to prototypes that need access to mobile features such as the camera, location services, and sensors. Its visual logic blocks let you define actions and workflows without writing traditional code.

Pros: supports mobile-specific functionality; suitable for interactive prototypes.

Cons: the Free plan limits you to three public projects and five screens per project, while live publishing requires an upgrade.

FlutterFlow

FlutterFlow gives you considerably more control over app behaviour and design than simpler no-code builders. The Free plan supports two projects, integrations, and web publishing.

Pros: suitable for more complex prototypes; web publishing is available for free.

Cons: downloading source code or app files and deploying directly to app stores are paid features.

SAP Build

SAP Build offers a 30-day trial with no permanent free plan, making it more suitable for exploring the platform before committing to a paid option. SAP Build Apps was retired as a standalone product in March 2026, although existing contracted customers can continue using it under their agreements.

Pros: useful for businesses already working with SAP and evaluating its wider Build ecosystem.

Cons: no permanent free plan; the trial lasts 30 days and has significant functional restrictions.

Jotform Apps

Jotform Apps is a straightforward choice when the app revolves around registrations, applications, surveys, or other forms. Its Starter plan includes unlimited apps, five forms, 100 monthly submissions, and 100 MB of storage.

Pros: quick to configure; generous enough for testing a small form-based workflow.

Cons: Jotform branding remains, and usage limits apply on the free tier.

Base44

Base44 generates an app from a written description, making it useful for turning an early concept into a working prototype quickly. Its Free plan currently includes 25 message credits and 100 integration credits each month.

Pros: AI handles much of the initial setup; backend, database, and authentication are included.

Cons: continued changes and integrations consume monthly credits, which limits larger experiments.

We cover AI app development separately, including how prompt-based builders compare with traditional no-code and custom development.

For a UK business, building an app for free does not mean launching and maintaining it for £0. Developer accounts, paid upgrades and data protection requirements can introduce costs before or after launch.

Apple App Store and Google Play fees in the UK

Apple charges UK developers approximately £79 per year for membership in the Apple Developer Program. Companies enrolling as organisations also need a D-U-N-S number, and their legal name and address must match the details held by Dun & Bradstreet.

Businesses planning a more complex native iOS product can also compare expert iPhone application developers UK to assess the cost of professional development, App Store submission and ongoing support.

Google Play requires a one-time registration fee of approximately £19 for a developer account.

When the free plan stops being free

A free builder may be enough for your first prototype but become restrictive as usage grows. Common reasons to upgrade include:

• reaching user or record limits;
• removing the builder’s branding;
• connecting a custom domain;
• publishing to app stores;
• adding integrations;
• giving several team members access.

Understanding how to publish an app for free also helps you choose the right plan. Web apps and PWAs can often be released without store fees, while native distribution usually introduces additional costs. Before launch, check the plan you are likely to need once your user base and data volume grow over the next 6–12 months.

UK GDPR and ICO requirements for free apps

A free builder does not exempt a UK business from its obligations under the UK GDPR. When an app collects names, email addresses or other personal data, check where the provider stores and processes that information, what safeguards apply to international transfers and whether it offers an appropriate data processing agreement.

You should also establish if your organisation must pay the ICO data protection fee. The ICO provides a self-assessment tool for this purpose; organisations processing personal information generally need to pay unless an exemption applies.

Before publishing your app, prepare a privacy policy. Apple requires a privacy policy URL in App Store Connect, while Google Play requires a privacy policy and relevant disclosures about how the app collects, uses, and shares data.

Learning how to create a mobile app for free can help you test an idea without committing a development budget. Free builders make this process faster and more accessible, but their limitations become more noticeable as the app gains users or takes on a larger role in business operations.

When a free app maker is enough

Paying for custom development from day one is unnecessary when the goal is small and clearly defined. A free builder can work well for:

• A simple interactive prototype or proof of concept for investors.
• An internal tool for a small team to manage requests, records, or simple workflows.
• Event registration where users mainly submit information through forms.
• A simple product or service catalogue that does not require complex transactions.
• Demand validation before development to see if customers actually use the core feature.

Warning signs you have outgrown the free plan

The right time to upgrade is usually determined by business requirements rather than the age of the app.

• You regularly hit user, record or storage limits, preventing customers or employees from completing tasks.
• You need payments or more detailed access roles, but the free tier cannot support the required workflow or permissions.
• Customers complain about slow performance, turning a technical limitation into a retention problem.
• You need CRM or ERP integration, but manual data transfer is creating duplicate work and errors.
• You cannot export your data, making the business increasingly dependent on one provider.
• Platform branding affects customer-facing screens, making the app look less consistent with the rest of your business.

Free platforms can create limitations that become expensive to fix later. Avoid these four mistakes when choosing one:

1. Building for every platform at once. Start with a PWA or one mobile platform instead of dividing your time between iOS, Android, and web before you have tested demand.
2. Ignoring data export and ownership. Check if you can export your data in a format such as CSV and access the source code; otherwise, moving to another platform may require rebuilding the app.
3. Launching with free-plan branding. Builder logos, third-party subdomains, and branded splash screens are fine for testing but can make a public app look less professional.
4. Skipping privacy and accessibility basics. Prepare the required privacy information and check font sizes, colour contrast, labels, and buttons before putting the app in front of customers.

Once your free version attracts real users, you can test a revenue model before investing further. Common options include:

• Freemium: Keep the core app free and charge for advanced features, additional capacity or premium content.
• Subscriptions: Charge monthly or annually for continued access.
• In-app purchases: Sell individual digital features, content, or upgrades.
• Advertising: Use a platform such as Google AdMob to generate revenue from ads.
• Support your core business: Use the app to increase bookings, service requests, repeat purchases, or customer loyalty without charging for access.

Store fees also affect revenue from digital products and services. Eligible developers enrolled in Apple’s Small Business Program pay a 15% commission, subject to Apple’s annual proceeds limit.

Google Play introduced a new fee structure for UK transactions on 30 June 2026. Developers in the relevant lower-fee tier pay a 10% service fee on qualifying transactions, with an additional 5% billing fee when Google Play Billing is used.

Learning how to make an app for free is most valuable when you have a specific idea to prove rather than a complete product to recreate. A free builder can help you put the core feature in front of users, measure their response, and identify what deserves further investment.

Once usage grows, costs for publishing, integrations, data capacity, or better control may become reasonable rather than avoidable. If you are exploring how to create an app for free, start small and let actual user behaviour determine what you build next.