Apps and platforms easy from day one

The first question is not how to build an app but how often customers will open it. Apps suit repeat use: collecting coffee shop points, booking a clinic regularly, reordering products every month, or staff who use a system every day. If customers only need you once or twice a year, asking them to download an app rarely pays off. A mobile-friendly website or LINE OA is easier to reach.

People do spend a lot of time in apps. Sensor Tower’s State of Mobile 2026 report puts the global average at about 3.6 hours a day per mobile user. But most of that time goes to a handful of apps people use daily. A business app needs a clear reason for people to come back: a discount, time saved, or something they cannot do through another channel.

In Thailand there is a third option: a LINE MINI App, which opens inside LINE without a download. It works well for loyalty points, food ordering or queue booking. Because so many Thais use LINE, many businesses start with LINE OA or a LINE MINI App, then build a full app once they have a base of regular users.

Apps are not only for customers. Internal systems that speed up your team often deliver a clearer return: a dashboard of sales across branches, a POS that joins in-store and online sales, or an app for technicians and field staff to log work. Knowing which kind you need makes budgeting and planning much easier.

• Customer apps: membership, points, coupons and notifications
• Booking and ordering: queues, orders and in-app payment
• Web applications and management dashboards
• Multi-branch POS and stock systems
• Staff and field-work apps
• Smartwatch apps for quick alerts or health data

Native apps are written separately for iOS (Swift) and Android (Kotlin). They give the best performance and full access to device features, but you maintain two codebases. Cross-platform apps built with Flutter or React Native use one codebase for both, which suits most business apps: faster to build, easier to maintain, and users rarely notice a difference.

A web app or PWA runs in the browser with no store involved. It suits internal systems and dashboards used mostly on desktop. The trade-off is that notifications and some device features are still more limited than in a real app, especially on iPhone. At The ADDs we mainly use Flutter or React Native to get iOS and Android from one codebase, and go native when a project truly needs device-specific features.

A good app project starts by keeping features narrow, choosing only what version one truly needs, so you launch sooner and learn from real users before investing more. Next comes UX/UI design and a clickable prototype for your team and some customers to try. Problems found now are far quicker and cheaper to fix than after coding.

Development runs in sprints of about two weeks. Each sprint delivers a test build you can use on your phone, so you see progress and can adjust direction along the way. Before launch, allow time for App Store and Google Play review, which can send the app back for changes. Typical timelines look like this.

• Feature planning and UX/UI: about 3–6 weeks
• Small app, such as membership and points: about 2–4 months
• Mid-size app with payments and a back office: about 4–6 months
• Platforms with many integrations or user types: 6 months or more
• Store review: allow about 1–2 weeks

App costs vary more than any other digital project, because an app often has parts users never see: an admin back office, servers and a database, a notification system and integrations. Screen count is a poor guide. Look at how complex each screen’s job is.

Do not forget costs after launch: servers, Apple and Google developer accounts, yearly updates for new iOS and Android versions, and new features users ask for. An app nobody maintains starts to break within months.

• Number and complexity of features
• Platforms: iOS, Android, web or smartwatch
• Admin back office and dashboards
• Integrations: payments, LINE Login, maps or existing systems via API
• Security level and personal data handling
• Ongoing maintenance and development after launch

Ask the company to show apps they built that are live on the stores. Download them, read the reviews, and check whether they are still being updated. An app last updated years ago tells you something about support after handover. Ask who designs and who builds, and whether it is one team or outsourced.

Ownership matters too. The App Store and Google Play developer accounts should be in your company’s name, the full source code should be handed over, and there should be enough documentation for another team to take over. If these terms are vague, you may not be able to change developers later.

• Live apps on the stores that are still updated
• A clickable prototype before development
• Regular test builds, such as every two weeks
• Store accounts and source code belong to you
• A clear support plan after store launch

The most common mistake is packing too many features into version one, which stretches the timeline and budget and makes the app harder to use. Many successful apps start by doing one thing very well, then add features based on real usage. Another mistake is assuming people will download the app once it exists. You need a plan to bring existing customers in, such as bonus points for signing up in the app.

Notifications are another trap. Send too many, or irrelevant ones, and people mute them or delete the app. Send fewer, useful ones, such as points about to expire or an item back in stock, and ask for notification permission at a moment when the user sees the benefit, not the first time they open the app.

Download counts look good but say little about whether the app helps the business. More useful numbers are monthly active users, how many people come back after 7 and 30 days, which features get used most, and where people drop off. Install analytics such as Firebase from version one, and use the data to plan each update.

In 2026 a few things should be planned from the start: LINE Login, which Thais know well and which shortens sign-up; PromptPay payment inside the app; PDPA compliance through clear consent and a way for users to delete their own account, which Apple and Google store policies also require; and AI features with a clear purpose, such as helping people find products or answering basic questions, rather than a chatbot added because it is fashionable.