Nesbit

About

Nesbit is ranked #17 of 26 in NES emulators on Inferse. It runs on iOS, macOS.

Compared on NES emulators

Supported platforms

iOS, iPadOS, macOSnesbit.app

Facts

Product

Nesbit is a toy NES emulator and debugger built from scratch in Swift.nesbit.app · 4 Oct 2026

Open source

Nesbit is open source under the MIT License.nesbit.app · 4 Oct 2026

Game support

It supports NES games using mappers 0 or 1; its debugger supports mapper 0.nesbit.app · 4 Oct 2026

Controls

It supports an on-screen virtual controller on iOS and iPadOS, plus hardware keyboards and gamepads on all platforms.nesbit.app · 4 Oct 2026

Playback

It plays sounds from all four synthesized channels and automatically restores each game's last state.nesbit.app · 4 Oct 2026

Performance

The site reports 60 FPS on M1 Macs and newer and iPhone 14 Pro and newer.nesbit.app · 4 Oct 2026

Debugger

The debugger displays CPU status and disassembly, and provides breakpoint, memory watch, call stack, and subroutine sidebar tabs.nesbit.app · 4 Oct 2026

Source files

The debugger can load labels and subroutine names from .dbg files generated by the ca65 assembler.nesbit.app · 4 Oct 2026

Limitations

Nesbit emulates one controller, does not play sampled audio, and does not implement some illegal CPU instructions.nesbit.app · 4 Oct 2026

Downloads

The site links to a TestFlight build for iOS and iPadOS and a direct macOS download.nesbit.app · 4 Oct 2026

Beta availability

The linked TestFlight page says the beta is not accepting new testers.testflight.apple.com · 4 Oct 2026

Maker

The site identifies its maker as Jason and says he has over 13 years of experience writing software for Apple platforms.nesbit.app · 4 Oct 2026

Where it ranks on Inferse

• Best NES Emulators in 2026#17 of 26

Sources

• nesbit.app· checked 4 Oct 2026
• testflight.apple.com/join/tzFGdUgQ· checked 4 Oct 2026