Business Apps in the US: iOS vs. Android, September 2026

We searched for US App Store and Google Play data to see what business apps professionals, shoppers, and investors actually installed in September. Below you'll find results by category and 4 takeaways to sharpen your app marketing strategy.

Category Totals: Google Play vs. App Store

Categories come directly from Google Play and the App Store. Each category is a tracked sample of the top 30 apps, not the full category, and the same app can sit in different categories on each platform. 

Revenue figures are store-attributed estimates, so apps that monetize outside the stores show little or none.

Two things jump out:

• iOS leads on installs in every category. App Store installs are 2.5x Google Play's in Business, 3.0x in Finance, 3.1x in Shopping, and 3.7x in Productivity.

• iOS leads even more in revenue. iOS Business revenue is about 15x Android's, and Productivity is about 4x.

Who Leads on Each Platform (+ Combined Results)

Only two categories have a different #1 on each platform. Business (Indeed on Android, Teams on iOS) and Finance (Cash App on Android, Kalshi on iOS). In Productivity and Shopping, one app leads both stores.

Business: Top 5 by Platform

Main insight: Indeed and Microsoft Teams are neck and neck, and together they hold about 20% of all Business installs in the sample. Zoom and LinkedIn follow. 

Finance: Top 5 by Platform

Main insight: Kalshi and Polymarket together hold about 18.5% of all installs in the Finance sample, ahead of Cash App, Capital One, PayPal, and Venmo. This category audience is heavily iOS: Kalshi gets about 4x more installs on iOS than on Android, versus about 2x for Cash App.

Productivity / AI: Top 5 by Platform

Main insight: ChatGPT is the clear leader at about 2.65M combined installs. Second place differs by platform: Muse from Meta on Android and Google Gemini on iOS. 

Shopping: Top 5 by Platform

Main insight: Resale dominates. Vinted and Depop together make up about 29% of all Shopping installs in the sample, and Vinted alone is more than double Temu. 

What the Leaders Did in September

Want to dive deeper into app marketing? We've got more articles for that:

• Business Apps in the US: iOS vs. Android, August 2026

• Mobile App Analytics Tool Comparison: Choosing the Best for Your Goals and Objectives

• Setting Up Search Ads in the App Store: A Step-by-Step Guide

• A Complete Guide to Apple Search Ads — How to Set Up Search Ads Campaigns

Lessons Learned: Top 4 Tactics to Adopt

1. A new launch can reach the top of a category in its first month. Meta introduced Muse on September 8, and it ranked #2 on Google Play and #3 on the App Store in Productivity, with about 1.69M combined installs. A new brand and a new app can build volume quickly, but plan the follow-up before launch day.

2. Attention is shared on busy days. Muse and ChatGPT landed the Images 2.5 update on the same day. Try to schedule your new features, partnerships, and creative refreshes.

3. Keep shipping to defend a lead. OpenAI released three notable updates in two weeks: image tools, a Word integration on every plan including Free, and a credit-score feature. ChatGPT finished first on both stores with about 2.65M combined installs. Each update gives users a new reason to open the app, and that is what a leader needs to hold its position.

4. For B2B apps, build for the buyer as well as the user. Microsoft's September changes to Teams (breakout rooms for up to 1,000 attendees and automatic blocking of external bots) are aimed at large organizations and IT admins. Teams is #1 on the App Store. Features that make an IT team comfortable approving or expanding an app support adoption in ways a consumer campaign can't.

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