iOS versions market share in April 2024

Every month, I take a look at the TelemetryDeck data set and compile the most helpful insights about the Apple operating system ecosystem in a blog post like this. Why? Because I can! I've developed apps for iOS ever since the App Store opened, I have statistics knowledge, and I have 4 billion data points in TelemetryDeck's data set at my fingertips.

In April 2024, over four in five iPhones are running iOS 17, and the rest are basically all running iOS 16. Subscribe to our newsletter to never miss any updates to these articles.

If you develop an app for iOS, I would strongly recommend setting your minimum deployment target to iOS 16 unless you have really good reasons to choose an earlier version. This way you're catching over 97% of the available market and still have a lot of new APIs available for development. I would also recommend measuring your personal iOS market share by integrating TelemetryDeck into your app for free.

In this article, when I say iOS I also mean iPadOS.

83% iOS 17, 14% iOS 16, the rest is negligible

As of April 2024, these are the market shares of major iOS versions in the TelemetryDeck data set:

• iOS 17: 83.1%, up from 80.9% in March
• iOS 16: 14.4%, down from 16.1% in February
• iOS 15: 2.5%
• Other

The overwhelming majority of iOS and iPadOS users use version 17, with version 16 a distant second.

iOS 15 and below are now a negligibly small percentage of the TelemetryDeck data set.

As is customary at around this time of the year, most people who wanted to and could update to iOS 17 have already done so. That means it's market share is not making any dramatic changes, and I expect this to stay until around June, when the first people outside of Apple are going to switch to iOS 18.

If you want a breakdown of OS versions for your app specifically, let me encourage you to try out TelemetryDeck for free right now.

iOS 17.3 is running on most iOS and iPadOS devices

The most used version of iOS is now 17.3, running on around 56% of all iOS devices. The newly-released version 17.4 is hot on its heels and being used by around 20% of all iOS 17 users.

Find out just how quickly people are adopting iOS 17 by subbing to our newsletter.

iOS 18 is in stable pre-production

The number of iOS 18 devices in our dataset is continuing to ramp up, showing that people inside Apple are beginning to use the unreleased OS on their carry phones and installing third-party apps. I think that's pretty cool, and I can't wait to see what's new in that version.

Vision Pro numbers are shrinking slightly

The TelemetryDeck data set had the most Vision Pro users on February 27, a month after the US release date of the headset on 2/2. Since then, usage numbers seem to trend gently downwards, with a small upwards bump around the release of VisionOS 1.2.0.

We're seeing a small number of VisionOS 2.0 users, which I assume are sitting in a windowless room in Cupertino somewhere, preparing for a WWDC release.

Compared to iOS apps, there is only a small number of VisionOS apps out there as of today, and TelemetryDeck is only included in a small percentage of them. This means that our VisionOS data should be taken with a grain of salt, but the trends look very plausible.

That and a lot of Vision Pro apps are made by Indie Developers (see our Shoutout to Vision Pro Apps), and we love being a part of the indie dev community!

Keep in mind that our data only includes apps that are using the TelemetryDeck Swift SDK (which supports Vision Pro 100%).

Biases in the TelemetryDeck data set

• Our data set currently skews towards small and independent developers, who in turn tend to have more technically minded users.
• The oldest iOS version our SDK supports is iOS 12, so we have no data before that.
• We use the aggregated data from the 3172 apps we manage and around 10.0 million monthly active users. These charts will be more accurate as we grow.
• Our data set is mostly American and European apps – things might look different in other regions. Below is a chart of our combined locales: