How to Install Multiple App Stores on iPhone

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Breaking Free from the Single-Store Model

For most of iPhone’s history, the App Store was the only game in town. Apple enforced a strict one-store policy, and any attempt to install apps from other sources required jailbreaking — a complex and warranty-voiding process that most users understandably avoided. That era is over. In 2026, installing multiple app stores on your iPhone is not only possible but increasingly mainstream.

Whether you are in the EU and have access to Apple’s official alternative marketplace framework, or you are anywhere in the world using third-party tools, this guide walks you through every option available for expanding your iPhone’s app catalog far beyond what the App Store offers.

Option 1: Scarlet iOS (Global, Free, No Jailbreak Required)

Scarlet iOS is the most capable third-party app installer available globally, without any regional restrictions. It is not technically an “app store” in the traditional sense — it is a sideloading tool that can access multiple app repositories and install any IPA file. But functionally, it delivers everything a third-party app store would: a catalog of apps, easy installation, and update management.

How to Install Scarlet iOS

  1. Open Safari on your iPhone and navigate to scarletios.com.
  2. Tap the Direct Install button.
  3. When prompted, tap Allow to permit the installation profile.
  4. Go to Settings > General > VPN & Device Management.
  5. Find the Scarlet iOS profile and tap Trust.
  6. Return to your home screen — Scarlet iOS is now installed.

Once installed, you can access thousands of apps through Scarlet’s repository network. For a more detailed walkthrough, see our Scarlet iOS download and installation guide for 2026.

Option 2: AltStore (Global, Requires a Computer)

AltStore is another well-established alternative app store that uses your Apple ID and a companion desktop app (AltServer) to sign and install apps. It works globally and does not require jailbreak.

Key Features of AltStore

  • Built-in app catalog called AltStore Sources
  • Delta — a Nintendo emulator that is AltStore’s flagship app
  • Requires a computer running AltServer on the same Wi-Fi network for weekly app refreshes
  • Limited to 3 apps with a free Apple ID (same Apple restriction as all free-account sideloading)

AltStore is a great complement to Scarlet iOS rather than a replacement for it. AltStore excels for apps in its curated catalog with automatic refresh support, while Scarlet iOS handles the broader universe of IPAs. Our guide on how to sideload apps on iOS 18 without jailbreak covers both tools in the broader sideloading context.

Option 3: EU Alternative Marketplaces (EU Only)

In European Union countries, Apple now permits officially approved Alternative Marketplaces under the Digital Markets Act. These are fully legal, Apple-approved app stores that can be installed alongside the official App Store.

Available EU Alternative Marketplaces in 2026

  • AltStore PAL — the EU-compliant version of AltStore, available for a small annual fee
  • Epic Games Store — Epic launched their iOS store in the EU to distribute their games and potentially third-party titles
  • Various developer-specific stores — some large developers distribute their apps directly through their own marketplaces

How to Install an EU Alternative Marketplace

  1. Ensure your device is set to an EU App Store region (Settings > [Your Name] > Media & Purchases > View Account > Country/Region).
  2. Visit the marketplace’s website in Safari.
  3. Follow the on-screen prompts to install the marketplace app.
  4. iOS will display a series of disclosure screens explaining that this app comes from outside the App Store — tap through them.
  5. The marketplace app installs and appears on your home screen.

EU marketplaces coexist with the App Store and with tools like Scarlet iOS without any conflicts.

Option 4: TrollStore (A12+ Devices, Non-Jailbreak, Specific iOS Versions)

TrollStore is a unique tool that exploits a CoreTrust bug to permanently sign apps without a certificate that can be revoked. Unlike other sideloading tools, TrollStore-installed apps never expire and cannot be revoked by Apple certificate rotation. However, TrollStore only works on specific iPhone models and iOS versions where the CoreTrust vulnerability has not been patched.

TrollStore is not a general-purpose solution for most users, but if your device is compatible, it offers the most stable sideloading experience available for supported versions.

Running Multiple App Stores Without Conflicts

The most common concern about installing multiple app stores is potential conflicts. In practice, these tools coexist well because they use independent installation channels. Here is how to minimize any friction:

Avoid Duplicate Bundle IDs

The only real conflict occurs when two tools try to install the same app (same bundle ID). iOS will consider it one app and whichever was installed most recently takes precedence. If you want the same app installed from two different sources simultaneously, use Scarlet iOS’s bundle ID override feature to differentiate them.

Certificate Pool Separation

Each tool uses its own certificate pool. Revoking one tool’s certificate does not affect apps installed by other tools. This means even if Scarlet iOS experiences a temporary certificate issue, apps installed through AltStore or TestFlight remain fully functional.

Storage and Organization

Having many extra apps across multiple stores can clutter your device. Use App Library extensively and consider organizing by source in folders: one folder for Scarlet apps, one for AltStore apps, etc.

Which Combination Works Best?

For most users, the optimal setup is:

  • Scarlet iOS as the primary tool — broadest compatibility, no computer needed, works globally
  • TestFlight for official developer betas of mainstream apps
  • AltStore (optional) for apps specifically in its curated catalog like Delta
  • EU Marketplace (if in the EU) for notarized apps from the Epic Games Store or AltStore PAL

This combination gives you access to essentially every app available outside a jailbreak context, with minimal management overhead.

Conclusion

The era of the single-store iPhone is definitively over. Between Scarlet iOS, AltStore, TestFlight, and EU alternative marketplaces, there has never been more ways to expand your iPhone’s app capabilities. The process of setting these up has never been easier, either — most users can have multiple app stores running within 30 minutes.

Start with the best. Install Scarlet iOS today — the most powerful iPhone app installer in 2026.

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