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Delta

Delta is an emulator for iOS and iPadOS, described as an all-in-one successor to GBA4iOS.

Place
#5 of 18
Score
6.2
Delta's website

What Delta is

Delta is an emulator for iOS and iPadOS, described as an all-in-one successor to GBA4iOS. It supports NES, SNES, Nintendo 64, Game Boy and Game Boy Color, Game Boy Advance, and Nintendo DS games. Users import ROM files into a library; documented formats also include Sega Genesis. Save options include manual and automatic states, plus locked and preview states, though Delta’s guide recommends in-game saves for greater reliability. Delta Sync can synchronize games, saves, skins, and BIOS files using Google Drive or Dropbox. The guide notes that Delta files are not visible in Google Drive, while editing visible Dropbox files could cause data loss. Compatible Nintendo DS titles can connect to community-hosted Nintendo WFC servers, with a listed server or custom DNS. Delta works with iOS-compatible controllers and keyboards, including Xbox, PlayStation, and Nintendo models, and supports button remapping. The app is free with in-app purchases. Distribution guidance directs EU users to AltStore PAL and users elsewhere to the App Store.

Good

  • Supports seven listed game systems.
  • Offers manual, automatic, locked, and preview save states.
  • Syncs games and related files through Google Drive or Dropbox.
  • Supports compatible controllers, keyboards, and button remapping.
  • Compatible Nintendo DS games can connect to community WFC servers.

Watch out

  • Available on iOS and macOS, not Android.
  • Guide recommends in-game saves over save states.
  • Editing visible Dropbox files may cause data loss.
  • Full beta requires AltStore PAL or AltStore Classic.

Who it suits

Delta suits iOS and iPadOS users who want to play games from its listed systems using imported ROM files. It may also suit players who want controller support, save-state options, syncing, or compatible Nintendo DS online play.

Verdict

Delta brings a broad set of listed console systems to iOS and iPadOS, with controller support, several save options, and sync integrations. Keep the save-state reliability guidance and Dropbox file warning in mind.

Plans and prices

From Delta's own pricing page, checked 4 Oct 2026.

All about pricing
PlanPriceWhat it gives you
DeltaFreeFree app · in-app purchases

The facts

Each one read from Delta's own pages, with the date it was checked.

What it does

Controllers
Delta supports iOS-compatible controllers and keyboards, including listed Xbox, PlayStation, and Nintendo controllers, and allows button remapping.checked 4 Oct 2026
Developer
The official team page identifies Riley Testut as Delta's developer and Shane Gill as responsible for operations.checked 4 Oct 2026
Distribution
The official guide directs users in EU countries to AltStore PAL and users outside the EU to the App Store.checked 4 Oct 2026
Game files
Users import ROM files into their library, with documented formats for NES, SNES, Game Boy, Game Boy Color, Game Boy Advance, Nintendo DS, Nintendo 64, and Sega Genesis.checked 4 Oct 2026
Game systems
The listing names support for NES, SNES, Nintendo 64, Game Boy and Game Boy Color, Game Boy Advance, and Nintendo DS.checked 4 Oct 2026
Online play
Delta connects compatible Nintendo DS games to community-hosted Nintendo WFC servers and lets users choose a listed server or enter a custom DNS.checked 4 Oct 2026
Patreon benefits
Linking a Patreon account can provide experimental features and alternate app icons, while downloading the full beta requires AltStore PAL or AltStore Classic.checked 4 Oct 2026
Product
Delta is an all-in-one emulator for iOS and iPadOS and the successor to GBA4iOS.checked 4 Oct 2026
Save states
Delta supports manual, automatic, locked, and preview save states, and its guide recommends in-game saves as more reliable than save states.checked 4 Oct 2026
Sync integrations
Delta Sync can sync games, save files, skins, and BIOS files through Google Drive or Dropbox.checked 4 Oct 2026
Sync visibility
The guide says Delta files are not visible in Google Drive; files are visible in Dropbox but should not be edited because this may cause data loss.checked 4 Oct 2026

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