Android vs iOS development is less a contest of technologies than a question of customers: build first for the phones your first customers carry. In the US that is a little more often an iPhone; worldwide, more often an Android phone. Tools, store fees and review times shape the budget and the launch date, but they rarely decide the platform.
I have spent 18 years in software development, and at 26 Lines of Code our 70+ specialists build apps for both stores, natively or from one shared codebase. Below: the differences that matter to a founder, and a table to decide with.
In October 2026 I read five of the articles Google showed me for this search. One dates from 2010, another from 2016. None says what either store charges a developer, none mentions SwiftUI or Jetpack Compose, the modern screen toolkits of Apple and Google, and none mentions Google Play's testing rule for new personal accounts. Five pages are a small sample, but they show how fast this advice ages.
Android vs iOS development: the short version
| iOS | Android | |
|---|---|---|
| Share of mobile web traffic (StatCounter, September 2026) | 53.6% in the US, 30.8% worldwide | 46.4% in the US, 69.2% worldwide |
| Language and screen toolkit | Swift and SwiftUI | Kotlin and Jetpack Compose |
| Built in | Xcode, on a Mac only | Android Studio, on Windows, macOS, Linux or ChromeOS |
| Screens to fit | iPhones, and iPads wherever possible | Phones from many makers, tablets, foldables, resizable windows |
| Developer account | $99 a year | $25 once |
| Review | At least half of submissions within 24 hours, 90% within 48 | Up to seven days for some apps and accounts |
| Before the first release | No extra step | On a new personal account, a closed test: 12 testers, 14 days |
Who your users are, at home and abroad
The first platform should be the one your first customers use, and that depends on the country. In StatCounter's data for September 2026, iOS carried 53.6% of mobile web traffic in the US, while worldwide Android carried 69.2%. StatCounter counts page views, not people, so treat it as a proxy for Android vs iPhone users worldwide, and look up its iOS vs Android market share by country before you launch outside the US. Two sources beat any national average:
- Your analytics. Google Analytics on your website already shows which phones your visitors carry.
- Your customers' devices. If the app is for a company's staff, the phones they are issued decide.
Swift or Kotlin: what each platform is built with
Today a native iPhone app is usually written in Swift, and a native Android app in Kotlin. Each platform also brings its own toolkit for screens and its own development environment:
- iOS. Swift is Apple's language for all its platforms, and SwiftUI builds screens across all of them, next to the older UIKit. The code is built in Xcode, which runs only on macOS: there is no Xcode for Windows, so an iOS team works on Macs.
- Android. Google recommends starting with Kotlin and calls Jetpack Compose Android's recommended modern toolkit for building native UI. Android Studio, the official environment, runs on Windows, macOS, Linux and ChromeOS.
Two native apps therefore mean two codebases and usually two specialists. What each includes is on our iOS app development and Android app development pages. SaneBox, an AI email assistant, shows the native route: we designed and built its Android app in Kotlin and Jetpack Compose.
The screens each platform has to fit
Android has far more screens to fit. For the team that builds the app, that range of hardware is the biggest difference between iPhone and Android:
- Android. Google counts more than 300 million large-screen Android devices in use, from tablets and foldables to car displays and TVs, and apps run in windows people can resize at any time. For apps that target Android 16, as Google Play has required of new apps and updates since August 31, 2026, Android ignores a portrait lock on screens 600dp or more in their smallest width; games are exempt, and the developer opt-out is temporary.
- iOS. A few iPhone sizes, plus the iPad: Apple's review guidelines say iPhone apps should run on iPad whenever possible.
So the test plan is where work on Android apps vs iOS apps differs most. An Android build is checked on a spread of makers, screen sizes and system versions, picked from your customers' phones.
What the stores charge, and how long review takes
Apple charges $99 a year for its developer program and Google a one-time $25. The larger costs are time and paperwork.
- Review. Apple typically reviews at least half of submissions in under 24 hours and 90% in under 48, and takes requests to expedite a critical bug fix or an event launch. Google warns that certain apps and accounts get extended reviews of up to seven days, longer in exceptional cases.
- The testing rule. A personal Google Play account created after November 13, 2023 must run a closed test with at least 12 testers, opted in for 14 days in a row, before it may apply for production access; Google typically decides within seven days. The rule covers personal accounts only, and Google points businesses to organization accounts anyway.
- The name on the account. A company account needs a free D-U-N-S number in both stores: Apple says to allow up to 5 business days to receive it, Google says up to 30. Apple shows the organization as the seller, or an individual's legal name.
So the first release is where Android vs iOS app development differs most for a founder. A new personal Google Play account adds about three weeks, two of testing and up to one of review, before anyone beyond your testers can install the app.
Android or iOS development first: a decision table
Start where your users are, unless the hardware, your team's computers or the launch date say otherwise. Forward the table to whoever helps you decide; it works with any team, ours included.
| Your situation | Start with | Why |
|---|---|---|
| Your analytics or customer list shows mostly iPhones | iOS | Your users decide, not the national average |
| Your users are mostly outside the US, or mostly on Android | Android | Android leads worldwide |
| The app is for your staff, on company phones | The platform of those phones | You already know the devices |
| Customers split evenly, and the screens are the same on both | One codebase for both stores | Each feature is written once |
| A core feature needs the hardware: Bluetooth, sensors, background work, heavy graphics | Native, on your users' main platform | The hardware is the product |
| Your developers work only on Windows PCs | Android, or Macs in the budget | Xcode runs only on macOS |
| Launch is close, and your Google Play account is new and personal | iOS first, or an organization account if your company already has a D-U-N-S number | The 14-day test comes before production; a new D-U-N-S number can take up to 30 days |
The third option: one codebase for both
If the answer is "both", you do not have to build twice. One codebase in Flutter or React Native builds a real iOS app and a real Android app, so a feature or a fix reaches both stores in one release; whatever no plugin covers is written in Swift or Kotlin for that feature alone. Mutualz, a restaurant app from Germany, is one Flutter codebase, live on the App Store and Google Play.
The iOS build still goes through Xcode on a Mac, and both reviews still apply. When the hardware is the point of the app, two native apps usually serve it better. The trade-offs are in the guide to cross-platform app development, our way of building it is on hybrid app development, and with us a first version starts at $5,000 either way.
Mistakes few avoid
The costly mistakes in Android vs iOS development rarely sit in the code. These three sit in the paperwork and the plan:
- Publishing from a personal account. It puts a person's name on the App Store listing and the 12-tester test in front of a Google Play launch. Register both accounts to your company, D-U-N-S number first.
- Budgeting for the launch only. Since April 28, 2026, Apple takes uploads only from Xcode 26 or later; since August 31, 2026, Google Play takes new apps and updates only if they target Android 16, and an app left targeting Android 14 or lower is offered only to phones on that version or older. That upkeep is mobile app maintenance; budget it from the start.
- Designing for one phone. Both platforms expect apps to work on tablets, so plan the larger layout before the build, not after launch.
When neither platform is the right first step
If people find you once, read and call, an app is the wrong tool on either platform. A mobile-friendly website does that job for less, and a progressive web app installs from a link and updates without store review. An app earns its cost when people come back every week, or when it needs more of the phone than a browser offers, such as Bluetooth or long background work.
Start with your feature list and what you know about your users. Send them to us, and before any contract we suggest a platform, or one codebase for both, with the reason. Everything we build for phones is under mobile app development.
Questions
Are there more Android or iPhone users in the US?
By StatCounter's count of mobile web traffic for September 2026, slightly more iPhones: iOS had 53.6% and Android 46.4%. Worldwide, Android leads with 69.2%.
Is iOS development easier than Android?
Neither is easier across the board. iOS has fewer screens to test but needs a Mac; Android Studio runs on any common computer, but the app must fit far more devices.
Can we build an iPhone app without a Mac?
Not in practice: every App Store build must come from Xcode, which runs only on macOS. Flutter and React Native hand their iOS builds to Xcode too, so a Mac, owned or rented, stays in the process.
Does an iPhone app also have to work on iPad?
Apple's review guidelines say iPhone apps should run on iPad whenever possible. Plan the layout for the larger screen from the start, even if the iPad is not your market.