Delta is an all-in-one emulator for iOS and iPadOS. Delta builds upon the strengths of its predecessor, GBA4iOS, while expanding to include support for more game systems such as NES, SNES, N64, Nintendo DS, and Sega Genesis.
FEATURES
Supported Game Systems
• Nintendo Entertainment System
• Super Nintendo Entertainment System
• Nintendo 64
• Game Boy (Color)
• Game Boy Advance
• Nintendo DS
• Sega Genesis
Online Multiplayer
• Play online-compatible Nintendo DS games with friends around the world!
• Connect via community Nintendo WFC servers
• Choose one of the default servers, or provide a custom DNS
Controller Support
• Nintendo Switch Pro controllers, Joy-Cons
• Nintendo Switch Online controllers (NES, SNES, N64)
• PS4, PS5
• Xbox One S, Xbox Series X
• MFi game controllers
• Bluetooth & wired keyboards
RetroAchievements
• Sign in with your RetroAchievements account to earn achievements in any supported game
• Supports Hardcore mode, which disables loading save states and using cheats
• Shows your achievement progress when launching a game
Save States
• Save and load save states for any game from the pause menu.
• Lock save states to prevent them from being accidentally overwritten.
• Automatically makes backup save states to ensure you never lose your progress.
• Support for “Quick Saves,” save states that can be quickly saved/loaded with a single button press (requires external controller).
Cheats
• Supports various types of cheat codes for each supported system:
• NES: Game Genie
• SNES: Game Genie, Pro Action Replay
• N64: GameShark
• GBC: Game Genie, GameShark
• GBA: Action Replay, Code Breaker, GameShark
• DS: Action Replay
• Genesis: Action Replay, Game Genie
Delta Sync
• Sync your games, game saves, save states, cheats, controller skins, and controller mappings between devices.
• View version histories of everything you sync and optionally restore them to earlier versions.
• Supports both Google Drive and Dropbox.
Custom Controller Skins
• Beautiful built-in controller skins for all systems.
• Import controller skins made by others, or even make your own to share with the world!
• Supports animated buttons for even more immersion when playing games
Hold Button
• Choose buttons for Delta to hold down on your behalf, freeing up your thumbs to press other buttons instead.
• Perfect for games that typically require one button be held down constantly (e.g. run button in Mario games, or the A button in Mario Kart).
Fast Forward
• Speed through slower parts of games by running the game much faster than normal.
• Easily enable or disable from the pause menu, or optionally with a mapped button on an external controller.
• Customize speed per-game by long-pressing Fast Forward option in pause menu.
3D/Haptic Touch
• Use 3D or Haptic Touch to “peek” at games, save states, and cheat codes.
• App icon shortcuts allow quick access to your most recently played games, or optionally customize the shortcuts to always include certain games.
Game Artwork
• Automatically displays appropriate box art for imported games.
• Change a game’s artwork to anything you want, or select from the built-in game artwork database.
Misc.
• Gyroscope support (WarioWare: Twisted! only)
• Microphone support (DS only)
• Support for delta:// URL scheme to jump directly into a specific game.
Delta Terms of Use: https://altstore.io/terms
**Delta is in no way affiliated with Nintendo. The name "Nintendo" and all associated game console names are registered trademarks of Nintendo Co., Ltd.**
I love this app!!! I have loved this app for so many years while it’s been “in development” and it warms my heart to see it finally on the App Store. I’ve spent so much time having a great time on Delta and I’m so happy to see my favorite games of all time being preserved in this app. Now Delta isn’t perfect and some updates are definitely needed. First give us the ability to rearrange touch screen buttons and controls anywhere on the screen on skins even if it’s not visually appealing. It’s a huge ergonomics feature and everyone has different size hands. Second give us gamegirl color profiles like in your previous app. Most importantly give us the ability to make gamegirl games were being played on a gamegirl color (and newer). Games like Flirby’s dream land 2 became a whole new experience with those colors and it’s how I played them as a kid. Third give us wireless multiplayer. Let us trade and battle our belt monsters with friends wirelessly. Let us run plummer parties with the crew. Ever since your last app I’ve wanted to play those games with my friends (even if it was a studery mess in those days). Forth let us change the aspect ratios for each emulator and allow widescreen hacks. Helps to use the larger screens of our iPhones. Fifth make it possible to move saves from your previous app to Delta. They’re still in my Dropbox but I haven’t been able to move them. Good on you guys for persevering all these years. Don’t stop and keep up the good work guys.
Amazing Experience⭐️
Responses For Different Apps
I’m actually pretty new to emulators and have never actually tried one out for myself until now but I have to say that this is the perfect app that works with IPad OS for doing so. With Delta I can take official game files for SNES titles like “Super Mario World” and “Super Mario Bros. 2 &3” as well as DS titles like “New Super Mario Bros.” And “Mario Kart DS” and store them on the app at no cost or problems regarding storing them onto the app itself. I also like how I am able to use my Magic Keyboard Folio as the controller for all of these games, skipping a connection process entirely. It’s also very convenient that I can have save data even when I don’t take these files directly from a GBA cartridge or DS game card, its amazing because now I don’t have to spend all of that money for these games and the console they launched for. As well as how it’s so easy to import the game file to my home library, all I have to do is click the file, then hit the purple confirm button and then it’s added. The app also offers very smooth game play even without wi-fi or cellular network connection as well as fast loading times, everything is instant. And that fact that I’m able to play these games offline to begin with. The only complaint is that whenever I loaded some game files for “Super Mario Bros. 3 & 2” they did not show up on my main home page and I have to search the game tittle up every time,so please fix that as soon as possible. Other than that, amazing app, great experience.✅💎
As beautiful as the day I lost you... (+ Request!)
Softlock
As an early adopter of GBA4iOS, using it's first few app versions way back when, to FINALLY having the chance to be reunited with Delta as it officially hits the app store has been nothing short of a dream come true. This is ESSENTIAL for any kind of video game enjoyer to have on their phone, whether it'd be enthusiast, or someone who's barely/never experienced much that these consoles had to offer, with hundreds of definitive and most definitely worth your time experiences being at the ready at your fingertips, spanning multiple generations, whether you'd want to relieve some childhood experiences with the SNES or GBC emulators, or you're willing to dive into the robust modding and homebrew scene of the N64 (like Smash Remix) and GBA (The mountain of ROM hacks for PKMN and PMD). for I need to reiterate once more, Delta is the ESSENTIAL platform for experiencing what true mobile gaming should be.For the developers: I of course have to thank you for your undying passion being put into this project. I hope it only continues as time goes by. I'd hope soon there would be more configuration when it comes to the emulator, possibly allowing access to turbo, remapping controls or the option to add additional buttons, and orientation locking to help with games that require gyroscope controls. In use with the GBA emulator, currently a pop-up does state autorotation being disabled, and yet it still automatically changes the orientation of the app with each turn.
Exceptional, best vintage emulator on the App Store!
osaym
It’s really cool to think how far we have came in terms of gaming in the last 20 years. 7 systems seamlessly on 1 device is just… amazing. This application brings so much joy to me, playing my childhood DS games. I ended up losing all of my childhood games on a flight when i was about 12 years old, and since then had been wanting to play the games again. I ended up loading all the games that I had lost into my library on the application 🥹 There are no bugs and the AirPlay integration is so cool, it just has a bit of an input delay.One thing I wish was changed: when AirPlay is being used with a controller on DS games, the “lower-half” of the DS screen is not displayed, which is quite annoying. I think the expected behavior should be to have the “top-half” screen shared to the AirPlay device, while the “bottom-half” touch sensitive screen is present on the phone, so it is still able to be used. Regardless, this app is the best thing to hit the app store and to hit the gaming industry in a really long time, and I’m excited to see how much further the developers can go with it in terms of devices and functionality. I will happily make a Patreon donation to promote the development of this application. :)
iPhone Duo
• Delta unfolds in all new ways to take full advantage of iPhone Duo
• Optimized controller skins for every pose in both portrait and landscape
• Supports Split View multitasking with other apps
• Folding Duo puts DS games to sleep, just like closing the lid of a real DS
Sega Genesis
• Delta does what Nintendon’t!
• Sega Genesis games are now playable in Delta
• New controller skins for iPhone and iPad recreate the classic Genesis controller look
• Built-in support for Action Replay and GameGenie cheats
Liquid Glass UI
• Fresh new UI designed from the ground up for Liquid Glass
• Fully adapts to all screen sizes from Duo to iPad
• System icons mark every page in your Game Library
• Default artwork now has a light, glassy look
RetroAchievements
• Sign in with your RetroAchievements account to earn achievements in any supported game
• Supports Hardcore mode, which disables loading save states and using cheats
• Shows your achievement progress when you launch a game
Recents & Favorites
• New "Recently Played" and "Favorites" pages in Game Library
• Quickly jump back in to your most recently played games
• Add games to "Favorites" via long-press for easy access
Animated Controller Skins
• Controller skins come to life with support for fully animated buttons and controls
• Supports 3rd-party skins, so skin creators can make their own
• Try Delta’s new official animated GBA skin, designed by Caroline Moore
Audio Settings
• New audio settings to control how Delta handles other apps’ audio
• "Mix with Other Audio" keeps music or podcasts playing alongside game audio
• "Pause Other Audio" pauses everything else when a game starts
Game Boy Color Palettes
• Customize how your Game Boy games look with color palettes for original Game Boy games
• Supports all the official color palettes from Game Boy Color
Custom Fast Forward Speeds
• Customize your experience with various Fast Forward speeds set per-game
• Adjust your game’s default speed at any time from the Pause Menu or in Game Settings
Adjustable Screen Position
• Long-press to move your game screen wherever you like when playing with a controller
• Easily move the screen above your favorite faceplate controllers
DLC
• Custom in-game experiences for classic Pokémon games
• Unlock event items, receive rare Pokémon, and more
• Supports all mainline GBA Pokémon games
• First DLC coming soon!
Redesigned Pause Menu
• Fully redesigned & animated pause menu with Liquid Glass
• Large, centered pause menu buttons make navigation simple
• Dynamically adjusts pause menu layout to scale to all window sizes
• Redesigned cheats screen with custom icons for additional customization
Redesigned Settings
• Reorganizes settings into more easily navigable hierarchy
• Displays icons for all top-level settings
• Redesigned controller input mapping screen for game controllers and keyboards
• New Lil’ Settings and Advanced sections for additional customizations
Custom Filters (Experimental Feature)
• Experience your games just how you remember with new custom game filters
• Set your filters per-system to change how games look across all your games
• Choose from a set list of defaults (e.g. CRT) or import your own custom filters from the Files app
Epilogue GB/SN Operator Support (Experimental Feature)
• Use your GB/SN Operator devices with Delta, thanks to the Epilogue team
• Connect game cartridges directly to your iPhone/iPad and play them natively
• Reads and writes save files to cartridge
• GB and SN operators support GBC/GBA and SNES games respectively
• Blowing into cartridges optional
Misc.
• Added the ability to delete save states in bulk
• Fixed issue causing audio crackling for SNES games
• Fixed NES games occasionally opening to a black screen
Version 2.0
The developer, Testut Tech, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
Seller
Yvette Testut
Size
239.1 MB
Category
Entertainment
Compatibility
Requires iOS 17.4 or later.
iPhone Requires iOS 17.4 or later.
iPad Requires iPadOS 17.4 or later.
Mac Requires macOS 14.4 or later and a Mac with Apple M1 chip or later.
