Ultimate Remote vs GridCalc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Ultimate Remote
Control your Ultimate-II or Ultimate 64 devices remotely from your iPhone, iPad, or Mac. Easily manage and run files, import media, create custom layouts, and even use keyboard macros for your Commodore 64.
- Scan and register devices
- Import and manage storage media
- Play SID files and run programs
- Upload and run external files
- Mount disk images and browse directories
- Create custom home layouts and shortcuts
- Create and send keyboard macros
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Ultimate Remote is free and open source remote control application for Ultimate-II and Ultimate 64 devices that are on v3.11 firmware and higher for iPhone, iPad, and Mac. With Ultimate remote; . Register Ultimate devices on local network by scanning them . Import contents of storage media that is used on Ultimate device with a simple text file . Easily access and search imported content and quickly take actions, such as Play SID File or Run a Program/Cartridge on your Commodore 64 . Upload and run external files from your mobile device. . Mount disk images, browse D64 directory contents, select and run arbitrary files on your Commodore 64 from the app. . Create and customize home layouts, arrange functions as you like . Create shortcuts of your favorite games, music or any supported file type on the homescreen and optionally customize them with your custom icons. . Import High Voltage SID Collection, create Jukebox Lists and play them on your Commodore 64. . Create keystorke lists (keyboard macros) and send them to your Commodore 64 remotely, as if typing on physical keyboard. . Perform any other operation that is supported by Ultimate HTTP API
GridCalc
This calculator app uses a grid interface to visualize every step of your calculations. It combines Reverse Polish Notation with a structured grid, allowing you to reference previous cells and see immediate recalculations when inputs change. Ideal for detailed, ad-hoc modeling on mobile.
- Visible grid for calculations
- Reverse Polish Notation (RPN)
- Incremental number entry
- Reference prior cells
- Immediate recalculation on input change
- Structured problem solving
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GridCalc is a new kind of calculator for iOS. It combines Reverse Polish Notation with a visible grid so every step of your work is structured and reviewable. Instead of a hidden stack or opaque formula bar, each value and operation lives directly in the grid. Enter numbers incrementally. Apply operations. Reference prior cells. Change any upstream input at any time and see immediate recalculation. GridCalc is built for people who think in steps and care about clarity: • Engineers and developers working through exact calculations • Finance and trading professionals modeling scenarios on the go • Students learning RPN and structured problem solving • Anyone who wants spreadsheet-level visibility without spreadsheet friction Designed for fast, ad-hoc modeling on mobile, GridCalc keeps your work visible, precise, and easy to continue later.
Screenshots
Verdict
The clearest difference is review sentiment: GridCalc at 100% against Ultimate Remote's 33%. GridCalc also leads on rating (5.0 vs 3.7) and update cadence (every 4 days vs fortnightly). Ultimate Remote's advantage is price (Free vs $14.99) and device support (4 vs 2). On ratings volume, ads and in-app purchases 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
Ultimate Remote is free to download; GridCalc costs $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.
GridCalc holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 3 and 2 respectively. Written reviews point the same way: 33% of Ultimate Remote's written reviews are positive against 100% of GridCalc's.
Ultimate Remote ships an update fortnightly, GridCalc every 4 days. The most recent releases landed on September 24, 2026 and October 1, 2026 respectively.
| Parameter | Ultimate Remote | GridCalc |
|---|---|---|
| Price | Free — better | $14.99 |
| Rating | 3.7 (3 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 33.3% of reviews | 100.0% of reviews — better |
| Number of ratings | 3 — better | 2 |
| Update frequency | Fortnightly | Every 4 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad |
| Requires iOS | 14.2 — better | 16.0 |
| Further details — not scored | ||
| Size | 76 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Onur Buyukcaglar | ALAN WILLIAM DIPERT |
Customer experience
Ultimate Remote
GridCalc
In-app purchases
Ultimate Remote
No in-app purchases
GridCalc
No in-app purchases









