R2 Touch vs Scanner
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
R2 Touch
This app serves as a remote control for R2-D2 replica robots equipped with specific receiver boards. It allows users to control various droid functions like dome panels, holoprojectors, sounds, and lighting. Users can upload their own sound files for playback and customize button commands.
- Control dome panels, holoprojectors, sounds, and lighting
- Upload custom sound files
- Programmable ASCII string commands
- WiFi and serial output options
- Customizable buttons
- R2-D2 inspired interface
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This is a remote control app for members of the R2 Builders Club. Apart from looking pretty, and playing sounds (if you upload them to the application), it doesn't do anything unless you are building an R2-D2 replica robot and have MarcDuino receiver boards (as described in www.marcduino.com and on my build log on Astromech.net). If you do, lucky you, it will allow you to control the dome panels, holoprojectors, sounds and dome lighting of your Droid in all sorts of interesting ways. You can see a demo of how it works with my R2 here: http://www.youtube.com/watch?v=AUod3LRQ1DI The app can run all the way down to iOS 8 on an iPhone 4S. The app doesn't include any sounds by default. If you want sounds to play directly from the app or through Bluetooth, you must upload your own sounds files to the App using iTunes. The sound files are typically the exact same you'd use in your remote sound system of the robot such as my MP3Trigger setup (described on www.marcduino.com). Commands, in the form of programmable short ASCII strings, are sent via the internal WiFi iPhone radio to a remote WiFly receiver. Alternately, the app also generates a 9600 baud serial output stream on the earphone audio port. This way you can send serial command to an external XBee transmitter radio for a more reliable link. You'll need a small level adapter board to use the audio serial capability, also on www.curiousmarc.com. Since you can customize most buttons and commands, you could also use this as a generic remote control app to send any short serial string via WiFi (to a WiFly radio fore example) or serial link (through an XBee). And with a spiffy R2-D2 inspired interface to boot!
Scanner
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QR Code or Bar Code can be found almost anywhere in a business and you need to input information when customers get it. This app is very useful for you. You can take a photo or scan QR Code and Barcode with a real camera and the application can directly show you the information of it. Main features: * Scan QR code, * Save to camera roll * Quick share * Save the content in device gallery as an image file, and share with other people * Copy scanned text to clipboard * Save scanned prompts to check them later * Look up scans in the internet * Generate your QR Codes and Barcodes on your own Supported code types: QRCode, Codabar, Code 39, Code 128, EAN-8, UPC-A, UPC-E, EAN 13, Data Matrix and more! QR code scanner for iPhone. QR Code Scanner with QR Code reader and Barcode Scanner. Get QR Code and Barcode's information. QR Code is used to make a lot of information easily searchable. It makes the information readable and accessible for your mobile phone. This application allows you to store the information you are looking for. You can use it like a business card, catalogue, label, or anything else.
Screenshots
Verdict
The clearest difference is price: Scanner at Free against R2 Touch's $5.99. R2 Touch's advantage is iOS requirement (8.0 vs 15.6). On update cadence, 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
Scanner is free to download; R2 Touch costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.
R2 Touch ships an update every 10 months, Scanner every 6 months. The most recent releases landed on October 9, 2026 and October 8, 2026 respectively.
| Parameter | R2 Touch | Scanner |
|---|---|---|
| Price | $5.99 | Free — better |
| Rating | 4.8 (9 ratings) — better | — |
| Positive reviews | 80.0% of reviews | — |
| Number of ratings | 9 — better | — |
| Update frequency | Every 10 months | Every 6 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 8.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 4 MB | 40 MB |
| Age rating | 4+ | 4+ |
| Developer | Neil Hutchison | Marcin Slusarek |
In-app purchases
R2 Touch
No in-app purchases
Scanner
No in-app purchases









