- Many business apps work best as a web app that installs on the home screen; a store app earns its cost when you need the stores themselves or deep phone features.
- Apple charges 99 USD per membership year and Google Play a 25 USD one-time fee, and both ask an organization for a D-U-N-S Number.
- Apple requires an in-app way to delete an account and a privacy label that covers third-party code, so plan both into the first version.
- A first version should do one job for one group of people, with the store accounts and code in the business's own name.
What an app developer in Chattanooga should help you decide
Most owners who call an app developer already picture an icon in the App Store. The better first question is what the app has to do and who has to use it. A booking tool for customers, a field app for a crew and a portal for wholesale buyers each point to a different build, a different budget and a different timeline.
Chattanooga has a long habit of building things online. EPB, the city's power company, says that in 2010 it became America's first provider to deliver Gig-speed internet community-wide. The Company Lab, a Chattanooga accelerator that began in 2009 as Create Here, now connects startups with capital, mentors and pilots with partners such as TVA, EPB and Oak Ridge National Lab. For a local business, that means plenty of people here have used good software and expect yours to work as well.
This guide walks through the three kinds of app, who is on a phone, what Apple and Google require before an app goes live, the privacy rules to plan for, and how to scope a first version you can afford to finish.
Three kinds of app and when each one fits
Mozilla's developer documentation describes a progressive web app as one built with web technologies that gives a user experience like a platform-specific app. Like a website, it runs on many devices from a single codebase, and like a store app it can be installed on the device and can work while offline. That middle option is often the right one for a small business.
| Kind of app | How people get it | Fits best when |
|---|---|---|
| Web app | Opens in the browser from a link or a bookmark. | Staff or customers sign in to do a task, such as a portal, a dashboard or an order form. |
| Installable web app | Opens from a link, then installs to the home screen like an app. | People use it often, it has to work with a weak signal, and one codebase for every phone matters. |
| Store app | Downloaded from the App Store or Google Play. | People expect to find you in the stores, or the app needs phone features the web cannot reach. |
The choice can change later. A web app built on a clean set of data and accounts can grow a store version once usage proves the need, and that order usually costs less than starting with two store apps on day one.
Who is on a phone, and on what connection
Pew Research Center's survey from January 30 to June 18, 2026 found that 91% of U.S. adults own a smartphone. The same survey found that 16% of adults are smartphone-only internet users, meaning they have a smartphone but no home broadband subscription. For those people, your app is the internet connection they have.
Speed at the office is rarely the problem here. EPB lists symmetrical fiber plans from 300 Mbps up to 25 Gigs, with uploads as fast as downloads. The phone in a customer's hand is another matter: it may be on cellular data in a parking lot, a warehouse or a job site. A good build plans for that.
- Small screens first. Design every screen for a phone held in one hand, then widen it for a desk.
- Weak signal. Save work in progress on the device and send it when the connection returns, so a form is never lost.
- Short sessions. Put the most common task one or two taps from the opening screen.
- Older phones. Test on a phone that is a few years old, because not every customer has the newest model.
What Apple and Google require before an app goes live
If a store app is the right choice, both stores ask for an account, identity checks and testing before anything goes public. These steps take calendar time, so they belong in the plan from the first week.
| Step | Apple App Store | Google Play |
|---|---|---|
| Developer account fee | 99 USD per membership year. | 25 USD one-time registration fee. |
| Business identity | The organization must be a legal entity with a D-U-N-S Number; Apple does not accept DBAs or trade names. | Organization accounts must provide a D-U-N-S Number. |
| Testing before launch | TestFlight allows up to 10,000 external testers; the first build needs App Review approval. | Personal accounts created after November 13, 2023 must run a closed test with at least 12 testers for 14 days. |
| Review | Apple says it reviews at least 50% of submissions in under 24 hours and 90% in under 48 hours. | Play Console help covers the current review steps. |
| Store commission | 15% on paid apps and in-app purchases for developers in the Small Business Program, which covers up to 1 million USD in yearly proceeds. | The service fee depends on the market and the type of sale; Play Console help lists the current rates. |
Apple also asks that the person enrolling have legal authority to sign for the business, a work email on the company's domain and a working public website. A D-U-N-S Number is free from Dun & Bradstreet, and Google warns that third-party services may charge high fees for it. Start this paperwork early, in the business's own name.
Privacy and account rules to plan for
Apple requires that any app that lets people create an account also lets them start deleting that account inside the app. Offering only to deactivate the account does not satisfy the rule, and apps that make deletion hard will not pass review. This is a screen, a server process and a support step, so it belongs in the first version.
Apple also asks every publisher to describe the data the app collects in App Store Connect, including data collected by third-party code such as analytics tools, ad networks and other SDKs. A public privacy policy link is required. Each analytics or marketing kit you add makes that label longer, which is a good reason to add only what you will use.
Tennessee has its own privacy law. Baker Donelson's guide notes that the Tennessee Information Protection Act took effect July 1, 2025, and applies to businesses with 25 million USD or more in revenue that also handle the personal information of 175,000 or more Tennessee consumers, or 25,000 or more while earning over half their revenue from selling personal data. Most small businesses fall under those lines, but collecting only the data the app needs is good practice either way. Ask your attorney if you are close.
How to scope a first version
Apps run over budget when the first version tries to do everything. A tight scope gets real people using it sooner, and their use tells you what to build next.
- Name one group of users. Customers, crew or office staff. Pick one for version one.
- Write down the one job. For example, book a time, log a job with photos, or reorder from past orders.
- List the systems it touches. Payments, scheduling, accounting or a database the business already uses. Connecting to them is often most of the work.
- Choose the kind of app. Web, installable web or store, using the table above.
- Plan the required screens. Sign in, account deletion, privacy policy and a way to reach support.
- Test with real users. A handful of staff or friendly customers, on their own phones, before any public launch.
- Decide who owns what. Store accounts, code and hosting should sit in the business's name from the start.
Everything that does not serve the one job goes on a list for version two. That list is a plan for later, and it keeps the first launch on time.
How Nooga Tech builds apps in Chattanooga
Nooga Tech is a software team based in Chattanooga, and apps are part of our custom software work: web apps, phone apps and the internal tools a business runs on. We meet at your business for scoping, so the people who design the app are people you can call.
If the app is part of a bigger push on daily work, our guide to AI automation for Chattanooga businesses covers where software can take hours off your week. If customers need to find you first, SEO in Chattanooga and website redesign cost in Chattanooga cover the website side. To talk through the app you have in mind, the free consult is the easy first step.
Frequently asked questions
Do I need a store app or a web app?
Start from the job the app does. A web app that installs to the home screen covers many business uses from one codebase. A store app fits when people expect to find you in the stores or the app needs phone features the web cannot reach.
What does it cost to publish on the App Store and Google Play?
Apple charges 99 USD per membership year for its developer program. Google Play charges a 25 USD one-time registration fee. The cost of building the app itself is separate and depends on the scope.
Does my business need a D-U-N-S Number to publish an app?
Yes for an organization account. Apple asks organizations for a D-U-N-S Number, and Google requires one for organization developer accounts. Dun & Bradstreet issues it for free.
How long does Apple take to review an app?
Apple says it typically reviews at least 50% of submissions in under 24 hours and 90% in under 48 hours. Incomplete submissions take longer or fail review.
Does my app need a way to delete an account?
If people can create an account in your app, Apple requires that they can also start deleting it from inside the app. Deactivating the account alone does not meet the rule.
How many people should test an app before launch?
Enough to use it on their own phones in real conditions. Google requires new personal accounts to run a closed test with at least 12 testers for 14 days, and Apple's TestFlight allows up to 10,000 external testers.
Who should own the app and the store accounts?
Your business. The developer accounts, code and hosting should be in the business's name, so you can change developers without losing the app or its reviews.
Does Nooga Tech build apps in Chattanooga?
Yes. Apps are part of our custom software work, including web apps, phone apps and internal tools. We are based in Chattanooga, start with a free consult and a written scope, and set up the code and accounts in your name.