Comparison

SCPI Commander vs u64

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

SCPI Commander

Control LXI enabled instruments directly from your device. Send SCPI commands, automate measurements with a built-in script engine, and process results. Easily manage and export instrument data, logs, and screen dumps.

Highlights
  • Connect to LXI instruments
  • Send SCPI commands
  • Built-in script engine
  • Automate measurements
  • Process measurement results
  • Export data and logs
  • Instrument identity inquiry
Features
Read full description

This app will connect to any LXI enabled instrument. You can control and get data back using for example SCPI (Standard Commands for Programmable Instruments) or any other kind of commands that can be send as plain ASCII over socket. Built-in script engine to automatize measurement and process the result. Features * Connected instrument can be added as favorite to make connection easier next time. * Automatically enquires the identity of the connected instrument. * Favorites can be exported as a CSV file. * Interactive IO, send and see the results immediately * Logging off a number of measurement. * Easy export off the session from both interactive io and logging measurement . * Ability to change the time-out value * Ability to change how much data can be read back. * Quick access to the instrument web-page * Quick access to common SCPI commands. * During logging, possible to pause and step through measurements. * Extensive help for interactive IO and logging measurement * Script Engine to automatize measurement * Process the measured values * Statistical calculations (Mean, Median, Standard deviation) * Export Statistical, binary blocks etc as CSV. * Easy to get screen-dump from connected instrument, save, print, view and zoom * Help for all screens, including all commands * Possibility to print favorites, logs and picture (AirPrint enabled printer)

About

u64

Remotely manage your Ultimate64, Ultimate II+, or Commodore 64 Ultimate hardware from your iPhone. Control device functions, mount disk images, play music, and edit memory wirelessly.

Highlights
  • 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
Features
Read full description

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.

Screenshots

SCPI Commander4 screens
u644 screens

Verdict

The call

The clearest difference is price: SCPI Commander at Free against u64's $0.99. SCPI Commander also leads on update cadence (weekly vs every 3 months). u64's advantage is rating (5.0 vs 3.0). On ratings volume, ads, in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

SCPI Commander is free to download; u64 costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

u64 holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 2 respectively.

UpkeepUpdate frequency

SCPI Commander ships an update weekly, u64 every 3 months. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

Scorecard4 real differences · 6 level
SCPI Commander versus u64: the parameters behind the verdict, then further details
ParameterSCPI Commanderu64
PriceFree — better$0.99
Rating3.0 (2 ratings)5.0 (2 ratings) — better
Positive reviews0.0% of reviews—
Number of ratings22
Update frequencyWeekly — betterEvery 3 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS13.013.0
Further details — not scored
Size6 MB21 MB
Age rating4+4+
DeveloperMichael AugustssonMarcin Spoczynski

Customer experience

SCPI Commander

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

u64

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

SCPI Commander

No in-app purchases

None

u64

No in-app purchases

Questions

Is SCPI Commander free?
SCPI Commander is free to download, with no in-app purchases.
Is u64 free?
u64 costs $0.99, with no in-app purchases.
Which has better reviews, SCPI Commander or u64?
u64 is rated higher. SCPI Commander averages 3.0 out of 5 from 2 ratings, while u64 averages 5.0 from 2 ratings.
Do SCPI Commander or u64 have ads?
Neither SCPI Commander nor u64 shows ads.
Which is updated more often, SCPI Commander or u64?
SCPI Commander ships an update weekly, and u64 every 3 months. Most recently, SCPI Commander was updated on November 3, 2026 and u64 on October 30, 2026.

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