Delta - Game Emulator
by Testut Tech
- Entertainment
- Free
- Rating
- 4.8
- 28.2K ratings · US storefront
- Top 45%among 88 Entertainment apps
- Last update
- Nov 11, 2025
- Version 1.7.3s
- Size
- 221 MB
- Category
- Entertainment
- Tracked since
- Oct 9, 2026
Estimated revenue
A model estimate with a likely range, not a reported figure.
No estimate. Apps outside the grossing charts, and some countries, have no reliable rank-to-revenue curve, so we show nothing rather than a guess.
How this estimate is made
Rank: we take the app's best Top Grossing rank on the latest chart day. Category ranks are converted into an equivalent overall rank, because a #10 in Finance earns far less than a #10 overall.
Curve: that equivalent rank is read off a rank-to-revenue curve anchored on public company revenue and market-data reports for the US iPhone App Store.
Country: the curve is scaled per country (Japan is roughly a third of the US, Türkiye under 1%). Where we have no scale, such as China, there is no estimate.
Range: the likely range widens with country, category and chart depth. It is a plausible span, not a statistical confidence interval.
Not included: ads, payments outside the App Store, and any difference between gross sales and what the developer keeps. Low confidence means indirect data; medium means several independent sources agree.
Full methodScreenshots
As shown on the App Store listing.
About this app
Text from the App Store listing.
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, and DS.
FEATURES
Supported Game Systems
- Nintendo Entertainment System
- Super Nintendo Entertainment System
- Nintendo 64
- Game Boy (Color)
- Game Boy Advance
- Nintendo DS
- And plenty more to come!
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
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
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!
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.
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.
What’s new
Release notes for the latest version, as written by the developer.
- Fixed keyboard support on iOS 26
- Fixed "Outdated Emulator" error when using RetroAchievements
Rank history
Daily position in the British Virgin Islands charts. #1 is at the top.
- Best rank
- #11
- Current rank
- #11
- Days charting
- 3 of 7
On the charts today
Small & simple score
How realistic it is for a small team to build something like this.
52/100
Not flagged as small & simple
- Developer size100% · 25
Developer: 1 app on the charts
- Audience size0% · 20
Ratings: 28,182
- App size25% · 10
Size: 221 MB
- Price model10% · 15
Price model: free
- Demand proof75% · 30
Best rank #11, 73 countries
An indicator, not a fact. We can't see team size. Calculated Oct 24, 2026 · method i2
How the score worksVersion history
- 1.7.3sLatestReleased Nov 11, 2025