SD401 vs WSwitch for WeMo
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SD401
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SD401 is a quality control system. The SD401 system consists of an iPhone with SD401 app and external SH7 Reader hardware (purchased separately). The SD401 app provides the GUI for displaying data. Data is received via Bluetooth communications from the SH7 Reader. Displayed data is in numeric form with the addition of alarm “LEDS” for each data point. The number of displayed data points is configured via a setup screen, with password control. Also, the alarm LEDS are configured with limits set for each data point. A data value within limits will be shown with a “green” LED and value outside limits with a “red” LED. Additional SH7 Reader readings such as temperature and battery voltage can be displayed in the app.
WSwitch for WeMo
Control your smart switches and LED bulbs directly from your iPhone, Widgets, and Apple Watch. Manage individual devices, all devices, or groups, and even set up new devices. This app provides a streamlined way to manage your smart home devices without relying on the original manufacturer's app.
- Control Wemo switches and LED bulbs
- Turn devices on/off individually
- Dim LED bulbs
- Control all devices with one button
- Set up new Wemo devices
- Create and control device groups
- Local network search or manual IP addition
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WSwitch is an app to control your Wemo switches with your iPhone, Widgets and Apple Watch. Now you can control your WeMo devices without the need for the discontinued WeMo app You can turn On or Off any device and dim your LED Bulbs. You can also turn On or Off all devices by pressing a button. You can set up the WiFi for new Wemo devices. You can create and control groups of devices. The app can search your local network for devices or you can add devices manually with IP. To use the app you have to be connected to the same wifi network as your smart devices. Also available for Mac: https://macappsto.re/us/Jnu27
Screenshots
Verdict
The clearest difference is price: SD401 at Free against WSwitch for WeMo's $3.99. WSwitch for WeMo's advantage is update cadence (every 6 weeks vs every 5 months) and chart position (#108 vs unranked). On ads, in-app purchases and iOS requirement 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
SD401 is free to download; WSwitch for WeMo costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.
SD401 ships an update every 5 months, WSwitch for WeMo every 6 weeks. The most recent releases landed on September 22, 2026 and October 10, 2026 respectively.
| Parameter | SD401 | WSwitch for WeMo |
|---|---|---|
| Price | Free — better | $3.99 |
| Rating | — | 3.5 (216 ratings) — better |
| Positive reviews | — | 46.9% of reviews |
| Number of ratings | — | 216 — better |
| Update frequency | Every 5 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Paid |
| Best chart rank | — | #108 — better |
| Devices | iPhone, iPod | iPhone, iPad, iPod, Apple Watch — better |
| Requires iOS | 15.5 | 15.0 — better |
| Further details — not scored | ||
| Size | 25 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Owen Brown | Georgios Trigonakis |
Bugs and requests
SD401
Not enough reviews yet to summarise bugs or requests.
WSwitch for WeMo
Reported bugs
3 issues- Devices sometimes disappear from the app
- Watch app not working as expected
- Compatibility issues with newer iOS versions
Requested features
4 requests- Add scheduling and timer functionality
- Implement dimmer controls
- Allow renaming of devices
- Improve remote access capabilities
In-app purchases
SD401
No in-app purchases
WSwitch for WeMo
No in-app purchases
Questions
Is SD401 free?
Is WSwitch for WeMo free?
Do SD401 or WSwitch for WeMo have ads?
Which is updated more often, SD401 or WSwitch for WeMo?
Other comparisons
