QRCode Book vs Watch Sensor Logger
Price, ratings, monetisation and update history for both apps, side by side ā with what reviewers say about each.
QRCode Book
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Application that lets you read and generate QR Codes, Aztec codes, EAN-128 barcodes, and more through optical scanning of QR codes, EAN, DataMatrix, Aztec, and other formats. Text is imported using UTF-8 encoding. Codes can be created using the keyboard or by receiving text from another source. Generated codes are created directly on the device and do not pass through any intermediate server. The documentation includes modules for QR Codes supporting VCARDs, calendar events (CALENDAR), Wi-Fi connections, Apple localization QR Codes, Google services, and social media links. You can also create collections of QR Codes and view the corresponding web pages later. QRCode Book works like a booklet of pages, allowing you to store and exchange codes using the various sharing methods available on iPhone. The code content is displayed while typing, and certain special elements are automatically detected when the keyboard is hidden. ⢠Exchange QR Codes by optical scanning with another device. ⢠Share text and images via AirDrop. ⢠Share via email, SMS, and other available services. ⢠Read QR Codes, EAN barcodes, DataMatrix, and Aztec codes. ⢠Print your QR Codes or use the generated images for printing. The last page of the booklet contains quick documentation with specialized modules such as VCARD, WIFI, CALENDAR, LOCALIZATION, social networks, and more. Good to know: ⢠Shake the device to clear the current text. ⢠Tap the editor to display the keyboard. ⢠Tap the logo to hide the keyboard. Springboard Quick Menu (iPhone 11 and later) ⢠Instant scanning of various code formats. ⢠Quick access to the documentation. ¢ JF Pautex, Nancy v1.3 - 2026
Watch Sensor Logger
Log detailed motion and GPS data from your Apple Watch. Export sensor readings like acceleration, attitude, and location as a CSV file for analysis. This app is exclusively designed for Apple Watch.
- Log sensor data
- GPS tracking
- Export to CSV
- Acceleration logging
- Attitude data
- Time stamping
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Watch Sensor Logger turns your Apple Watch into a powerful motion and location logger. Record high-precision sensor data straight from your wrist: ⢠Acceleration ⢠Rotation Rate ⢠Gravity ⢠Attitude ⢠GPS location Start a recording on your Apple Watch, then review your sessions on your iPhone. Every measurement is visualized with clear charts so you can spot patterns at a glance, and you can export any session as a CSV file for analysis in your favorite tools. Perfect for researchers, developers, athletes, and anyone curious about the motion of everyday life. KEY FEATURES ⢠One-tap recording on Apple Watch ⢠Motion sensors: acceleration, rotation rate, gravity, attitude ⢠GPS location logging ⢠Beautiful charts to explore your data ⢠CSV export for spreadsheets and analysis ⢠Manage and delete past sessions easily
Screenshots
Verdict
The clearest difference is ads: QRCode Book at none against Watch Sensor Logger's shown. QRCode Book also leads on update cadence (every 2 months vs every 25 months) and iOS requirement (15.6 vs 17.0). On price, in-app purchases and device support there is nothing between them.
Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
QRCode Book ships an update every 2 months, Watch Sensor Logger every 25 months. The most recent releases landed on October 8, 2026 and October 1, 2026 respectively.
| Parameter | QRCode Book | Watch Sensor Logger |
|---|---|---|
| Price | Free | Free |
| Positive reviews | ā | 50.0% of reviews |
| Update frequency | Every 2 months ā better | Every 25 months |
| Ads | No ā better | Yes |
| In-app purchases | No | No |
| Monetization | ā | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Requires iOS | 15.6 ā better | 17.0 |
| Further details ā not scored | ||
| Size | 0 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | Jean-Francois Pautex | yuya kanbetsunawa |
In-app purchases
QRCode Book
No in-app purchases
Watch Sensor Logger
No in-app purchases
Questions
Is QRCode Book free?
Is Watch Sensor Logger free?
Do QRCode Book or Watch Sensor Logger have ads?
Which is updated more often, QRCode Book or Watch Sensor Logger?
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