How to Install Onside Store

The installation won’t take long—you’ll be using the app marketplace within minutes.

Before you start

Your Apple Account Country/Region must be set to an EU country/region or Japan. Otherwise iOS blocks alternative marketplace installation.

Make sure you:

• Use Safari or Google Chrome. iOS blocks alternative marketplace installation flows in some other browsers.

• Are physically located in the EU (excluding the UK) or Japan. A VPN will not bypass this requirement.

• Use an Apple Account with an EU country/region or Japan.

  • Check: Settings > [Your Name] > Media & Purchases > View Account > Country/Region.

How to check or change your App Store country/region

Go to Settings > [Your Name] > Media & Purchases > View Account. You might need to sign in.

Tap Country/Region > Change Country or Region, select your country/region (EU country or Japan), and follow the on-screen instructions.

Changing your region may affect existing subscriptions and payment methods tied to your Apple ID.

• Run a supported iOS version.

  • EU: iOS 17.6 or later

  • Japan: iOS 26.2 or later (MSCA support)

How to check and update your iOS version

Go to Settings > General > Software Update. If an update is available, install it.

In Japan, iOS alternative app marketplaces are enabled under the MSCA. Apple may show additional authorization prompts during installation. Apps distributed outside the App Store also go through Apple’s baseline Notarization checks.

If you run into issues, see Troubleshooting Installation Issues.

Installation steps

Install Onside

After you confirm the prerequisites, follow the steps for your iOS version.

Older iOS installation flow

1. Open onside.io in Safari and tap Install Onside.

2. Tap OK to dismiss the iOS notice about installing an alternative app marketplace.

1. Open Settings and allow marketplace installation for Onside.

1. Return to Safari and tap Install Onside again.

1. Tap Install App Marketplace to finish.

1. Open Onside Store, create your account, and start downloading apps.

Install Onside

Newer iOS installation flow

1. Open onside.io in Safari and tap Install Onside.

2. Tap Allow Installation.

1. Confirm installation via Face ID or your Apple ID password.

1. Tap Open Onside Store.

1. Create your account and start downloading apps.

Install Onside

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If you still need help, contact Onside support via the chat in the bottom-right corner, or email [email protected].