| Price from | Free | — |
| Free plan | Yes | — |
| Free trial | — | — |
| Open source | — | — |
| macOS | Yes | — |
| iOS | Yes | — |
| Android | — | Yes |
| Plans published | 1 | 0 |
| Spec score · Game Boy Advance Emulators | 7.8 (#12) | 6.7 (#25) |
| Developer | The official team page identifies Riley Testut as Delta's developer and Shane Gill as responsible for operations. | The repository identifies Prashant Chataut as Retra's developer. |
| Distribution | The official guide directs users in EU countries to AltStore PAL and users outside the EU to the App Store. | The listed Android APK releases are described as personal or open-source sideload test builds, not Play Store releases. |
| Product | Delta is an all-in-one emulator for iOS and iPadOS and the successor to GBA4iOS. | Retra is a privacy-first Android Game Boy Advance emulator, patch workspace, save vault, and personal game archive. |
