Stepper Motor Calculator vs W
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Stepper Motor Calculator
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The Stepper Motor Calculator is designed to calculate the maximum speed of a stepper motor, as well as the minimum time per step and the maximum power dissipation. A stepper motor, also known as a step motor or stepping motor, is a brushless DC electric motor that divides a full rotation into a number of equal steps. The motor's position can then be commanded to move and hold at one of these steps without any position sensor for feedback (an open-loop controller), as long as the motor is carefully sized to the application in respect to torque and speed. Stepper motors are often computer-controlled and can be categorized under motion-control positioning. In this application, the stepper motor is part of an open-loop system for holding or positioning objects. The stepper motor is a popular type of synchronous motor because it allows for precise movements or "steps." This type of motor also produces a lot of torque given its size and is mostly used in industrial applications. Because they allow very small movements, stepper motors are also found in the field of lasers and optics, where precision positioning is often required. These motors are often part of linear actuators, goniometers, and rotation stages. Similarly, stepper motors are used in fluid control systems, particularly in positioning valve pilot stages. They can also be found in packaging machinery. Stepper motors are mostly used in 3D printers and CNC machines as actuators. They are also used in disk drives, printers, slot machines, camera lenses, and image scanners. To compute the maximum revolutions per second, divide seconds per step by steps per revolution. Rev/sec = V/(L*2*Imax)/(steps/rev) Pmax = 2*Imax*V Where: V = Voltage - Volts (V) L = Inductance - milliHenry (mH) Imax = Current - Amps (A) Pmax = Max Power - Watts Thanks for your support, and do visit nitrio.com for more apps for your iOS devices.
W
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The W-Modbus app has arrived! Upgrade firmware for LumenRadio W-Modbus devices by connecting to and upgrading the LumenRadio Gateway in the network through the app. In the Network map you will find a system overview where you can see signal strength, edit names of wireless nodes as well as seeing the health of the RS485 bus including which Modbus RTU address that is connected to that wireless node. You can also connect to any node in the network and change their name (up to 20 characters). The W-Modbus app requires W-Modbus firmware 3.1.1 and above, which can be downloaded from the LumenRadio support webpage. Note that you need to install FW 3.1.1 or above on the gateway from the nRF connect app to enable the functionality. It is also required to have at least 3.0.0 or above on all nodes in the network. You will need to update all nodes individually if they are on version 2.2.3. This will be the last time this is required. All future updates can be done by either this app or from the nRF connect app.
Screenshots
Verdict
The clearest difference is price: W at Free against Stepper Motor Calculator's $2.99. W also leads on update cadence (every 3 months vs every 32 months). Stepper Motor Calculator's advantage is iOS requirement (13 vs 15). On ads, in-app purchases and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
W is free to download; Stepper Motor Calculator costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Stepper Motor Calculator ships an update every 32 months, W every 3 months. The most recent releases landed on October 29, 2026 and October 10, 2026 respectively.
| Parameter | Stepper Motor Calculator | W |
|---|---|---|
| Price | $2.99 | Free โ better |
| Update frequency | Every 32 months | Every 3 months โ better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13 โ better | 15 |
| Further details โ not scored | ||
| Size | 1 MB | 29 MB |
| Age rating | 4+ | 4+ |
| Developer | Nitrio | LumenRadio AB |
In-app purchases
Stepper Motor Calculator
No in-app purchases
W
No in-app purchases
Questions
Is Stepper Motor Calculator free?
Is W free?
Do Stepper Motor Calculator or W have ads?
Which is updated more often, Stepper Motor Calculator or W?
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