Delta Legacy vs GenZD Zero
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Delta Legacy
This application allows users to play Nintendo DS games using a legacy emulator core. It supports importing old save states, offers extensive controller compatibility, and includes features like cheat codes and fast-forwarding.
- Legacy melonDS 0.9.1 core
- Import old melonDS save states
- Extensive controller support
- Save/load and backup save states
- Cheat code support (Action Replay)
- Customizable controller skins
- Fast forward and hold button features
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Delta Legacy is a special version of Delta that uses "legacy" emulator cores. Specifically, this version includes melonDS 0.9.1, the original version of melonDS bundled with Delta until version 1.6. With Delta Legacy you can import your old melonDS save states from Delta and continue playing where you left off. FEATURES Supported Game Systems • Nintendo DS (melonDS 0.9.1) 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: • DS: Action Replay 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. **Delta Legacy is in no way affiliated with Nintendo. The name "Nintendo" and all associated game console names are registered trademarks of Nintendo Co., Ltd.**
GenZD Zero
Run classic idTech 1 games and community mods on your iOS device with modern rendering capabilities. Enjoy enhanced graphics, custom controls, and controller support. You must provide your own game files.
- idTech 1 game engine support
- Modern 3D rendering
- Widescreen graphics
- Dynamic lighting
- Customizable touch controls
- Game controller support
- Local multiplayer
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GenZD Zero supports running games using the open-source idTech 1 game engine for iOS, and supports running its "WAD" game files as well as community-developed "MOD" files, all rendered natively using modern technology. It supports several capabilities beyond the original engine, such as modern 3D rendering, widescreen graphics, dynamic lighting, a fully scriptable environment, and much much more. Please note that GenZD Zero does not include content and they must be provided by you. Please use the Files app to move or copy files to the GenZD folder under "On my iPhone" or "On my iPad". Configurations called "Launch Configurations" can be created using a base game file as well as additional MOD files (.pk3 and .zip files). A plethora of content developed by the community is available on the web, and almost all "mods" that use the UDMF or WAD formats are supported. GenZD Zero supports any "WAD"s and "mods", but is limited to 3 launch configurations and supports one touch configuration layout. Upgrading to the full version will unlock unlimited launch configurations and custom touch control layouts. Additional features: - Game controller support: PS4, PS5, Xbox One, Nintendo Switch, mFi - On-screen touch virtual gamepad and virtual keyboard - Customizable touch controls: Rearrange buttons, change color and size. Support for saving multiple layouts. - Gyroscope aiming - Widescreen Metal graphics rendering using MoltenVK - Add your own game and mod files via the Files app - Accessibility: Supports VoiceOver and mods that support accessibility - Local Multiplayer: Host a co-op or deathmatch game, discover hosts running GenZD automatically on the same network and join a game
Screenshots
Verdict
The clearest difference is rating: GenZD Zero at 4.4 against Delta Legacy's 3.2. GenZD Zero also leads on review sentiment (69% vs 47%). Delta Legacy's advantage is in-app purchases (none vs 1). On price, ratings volume, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. GenZD Zero sells 1 one-off in-app purchase. Delta Legacy asks for nothing beyond the download.
GenZD Zero holds the better App Store score, 4.4 against 3.2. Both are backed by a comparable volume of ratings — 78 and 39 respectively. Written reviews point the same way: 47% of Delta Legacy's written reviews are positive against 69% of GenZD Zero's.
| Parameter | Delta Legacy | GenZD Zero |
|---|---|---|
| Price | Free | Free |
| Rating | 3.2 (78 ratings) | 4.4 (39 ratings) — better |
| Positive reviews | 46.9% of reviews | 69.0% of reviews — better |
| Number of ratings | 78 — better | 39 |
| Update frequency | — | Every 10 days |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 70 MB | 56 MB |
| Age rating | 4+ | 12+ |
| Developer | Testut Tech | Infinite Evolution Technologies |
Customer experience
Delta Legacy
GenZD Zero
Bugs and requests
Delta Legacy
Reported bugs
14 issues- Randomly crashes when loading saves
- Emulator skins won't import correctly
- White screen appears
- Lost all save states after update
- Save data corruption
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- Cannot import save files
- A button not working
- Fast forward feature jumbles music
- App crashes when trying to load a game
- Missing files error for DS ROMs
- Save states are incompatible
- Save files are gone forever
- App freezes when loading save state
- Corrupted save data after update
Requested features
9 requests- Add Nintendo New 3DS, DSi, and 2DS emulation
- Add fast forward function like original Delta
- Emulate Game Boy Color, Game Boy, and Game Boy Advance
- Create a new Nintendo Network for DS (Delta Network)
- Add 3DS emulation
Show 4 moreShow fewer
- Add Wii U and 3DS emulators with skins
- Add a donation section (PayPal)
- Make the original app compatible with saves
- Allow playing on other devices without re-purchasing
GenZD Zero
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Delta Legacy
No in-app purchases
GenZD Zero
- Full Version Upgrade$2.99







