# u64 - Ultimate64 Controller — Remote for Ultimate64

> Wireless remote control and management for Ultimate64 hardware. (iPhone/iPad app by Marcin Spoczynski.)

- Source: https://appshunter.io/ios/app/u64-ultimate64-controller/id6751809716 (this page in markdown: same URL + `.md`)
- Developer: [Marcin Spoczynski](https://appshunter.io/developer/1836935012)
- Category: Utilities
- Price: $0.99
- Rating: 5.00/5 from 2 App Store ratings
- Age rating: 4+
- Requires: iOS 13.0 · 21 MB
- Languages: American English
- Released: 2026-01-05
- Data updated: 2026-08-20
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/u64-ultimate64-controller/id6751809716/reviews.md

## What is u64?

Control your Ultimate64, Ultimate II+, or the new Commodore 64 Ultimate directly from your iPhone. Mount disks, play SID music, manage files, and configure your device — all wirelessly over your local network.
DEVICE CONTROL
Reset, reboot, pause, resume, and power your machine remotely. Load PRG programs, cartridge files, SID tunes, and MOD audio instantly.
DISK MANAGEMENT
Mount and unmount D64, G64, D71, G71, and D81 disk images without leaving your chair.
DEVELOPMENT TOOLS
Peek and poke memory addresses with the built-in memory editor. Send text commands through the keyboard buffer for automation and testing.
CONFIGURATION
Access and modify device settings. Save configurations to flash memory for permanent storage.
STATUS MONITORING
View real-time drive states, mounted images, and device information with instant feedback.
Connects via Ethernet or Wi-Fi on your local network. Auto-discovers compatible devices.
Perfect for retro gaming, C64 development, digital preservation, and educational use.
Requires Ultimate64, Ultimate II+, Ultimate II, or Commodore 64 Ultimate hardware with network connectivity and REST API support.

## Key features

- Remote device control (reset, reboot, pause)
- Load PRG, cartridge, SID, and MOD files
- Mount/unmount D64, G64, D71, G71, D81 disk images
- Memory editor with peek/poke
- Send text commands via keyboard buffer
- Access and modify device settings
- Real-time drive state monitoring

## Chart rankings

- #191 in Top Paid · Utilities (US App Store)


## Frequently asked questions about u64

### What hardware does Ultimate64 Controller require?

Ultimate64 Controller requires Ultimate64, Ultimate II+, Ultimate II, or Commodore 64 Ultimate hardware with network connectivity and REST API support. It is not a standalone emulator.

### Can I use Ultimate64 Controller without the physical hardware?

No, this application is designed to control specific Ultimate64 hardware models. It requires a compatible device connected to your local network to function.

### What types of disk images can be mounted with Ultimate64 Controller?

You can mount and unmount D64, G64, D71, G71, and D81 disk images directly from your iPhone or iPad.

### Does Ultimate64 Controller support playing SID music?

Yes, the app allows you to play SID music files directly on your Ultimate64 hardware.

### How does Ultimate64 Controller connect to the hardware?

The application connects wirelessly via Ethernet or Wi-Fi on your local network. It features auto-discovery for compatible devices.

### What are the development tools available in Ultimate64 Controller?

It includes a memory editor for peeking and poking memory addresses, and a feature to send text commands through the keyboard buffer for automation and testing.

### Is Ultimate64 Controller free to use?

No, Ultimate64 Controller is a paid application. It is priced at $0.99 and does not feature in-app purchases or advertisements.

### How often is Ultimate64 Controller updated?

The latest version, 1.1, was released on March 31, 2026. Updates are provided by the developer, Marcin Spoczynski, to enhance functionality and compatibility.

## Version history (last 2 releases)

### 1.1 — 2026-03-31

- Improved portrait and landscape layout throughout the app
- Memory editor now fully scrollable on all screen sizes
- Browse the C64 Scene — search releases, view top lists and latest uploads, download and run files directly on your Ultimate64

### 1.0 — 2026-01-05

No release notes.

## Related topics

[control ultimate](https://appshunter.io/ios/topics/control-ultimate)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-20.*