Charcoal vs R+W Sensor App
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Charcoal
This app offers a simple yet powerful sketching experience with rich tools and beautiful color palettes. Easily create and export your artwork for use in other graphics programs. It supports modern iOS features like multiple windows and dark mode for enhanced productivity.
- Simple sketching interface
- Rich drawing tools
- Beautiful color palettes
- Export sketches
- Multiple window support
- Dark mode
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• Charcoal is incredibly easy to use: Just create or open a sketch and start sketching. There are no layers or confusing settings. Instead, Charcoal features rich tools and beautiful color palettes. • Charcoal allows you to export a sketch to use it in your favorite graphics program. • Charcoal supports modern iOS and iPadOS features like multiple windows and dark mode: use it at night or open multiple sketches, even side by side.
R+W Sensor App
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R+W Sensor App Measurement data app for displaying and recording measurement data from R+W iPK. The R+W Sensor App allows you to save data on your mobile device or the measurement amplifier itself. The data can also be exported in CSV format and evaluated on a PC. Measurable variables: - Torque - Speed - Vibration - Temperature Easy to use: The R+W Sensor App enables quick and easy reading of the iPK thanks to its intuitive operation. Up to four couplings can be connected simultaneously. Measurement data in dashboard view: Measurement data is clearly displayed on the dashboard. The average value with min/max values is displayed for each measured value; the time interval is configurable. The measured values can be reset to zero using a tare function. Measurement data in chart view: Tapping on a measured value displays it in a time-dependent chart. If several couplings are connected, each is displayed as a separate graph. Recording measurements: A REC button starts or stops recording the measured values, which are saved as a CSV file on the device. Other app functions: - Display of signal strength and battery status - General information / settings - Resetting the iPK Note! This app is only compatible with the iPK from R+W.
Screenshots
Verdict
The clearest difference is update cadence: R+W Sensor App at every 4 days against Charcoal's every 2 months. R+W Sensor App also leads on iOS requirement (13.0 vs 15.0). On price, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Charcoal ships an update every 2 months, R+W Sensor App every 4 days. The most recent releases landed on October 26, 2026 and October 16, 2026 respectively.
| Parameter | Charcoal | R+W Sensor App |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (144 ratings) — better | — |
| Positive reviews | 76.8% of reviews | — |
| Number of ratings | 144 — better | — |
| Update frequency | Every 2 months | Every 4 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod, Vision Pro — better | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 29 MB | 69 MB |
| Age rating | 4+ | 4+ |
| Developer | Lars Augustin | core sensing GmbH |
Bugs and requests
Charcoal
Reported bugs
3 issues- Saved sketches lose quality
- Palette colors change unexpectedly
- Freezing when opening color palette
Requested features
4 requests- Ability to change brush/pen size
- Layers and blending tools
- Color wheel and custom color selection
- Import/export options
R+W Sensor App
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Charcoal
No in-app purchases
R+W Sensor App
No in-app purchases
Questions
Is Charcoal free?
Is R+W Sensor App free?
Do Charcoal or R+W Sensor App have ads?
Which is updated more often, Charcoal or R+W Sensor App?
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