iO vs I/O Field
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
iO
This application works with specific hardware to configure, calibrate, and monitor sensor and actuator devices that adhere to the IO-Link standard.
- Configure IO-Link devices
- Calibrate sensor devices
- Monitor actuator devices
- Supports IO-Link standard
- Works with iO-Fly hardware
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The iO-Fly app can be used together with the iO-Fly hardware device that is sold by Lemonage Sofware. Users can configure, calibrate and monitor sensor and actuator devices that follow the IO-Link standard.
I/O Field
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The “WAGO I/O Field” app is for monitoring and full operation of the WAGO I/O System Field. This app allows you to display device information for both fieldbus modules and IO-Link hubs, make settings and adjust all device parameters. The communication this requires takes place through the Bluetooth® interface of the mobile device once Data Matrix has been scanned to select the device. Users and the associated access rights can be set up and managed. Outputs can be forced and inputs set in order to support commissioning of systems. The current measured values of a port can be displayed (temperature, voltage, current and states) and configured (including operating mode and filters). Devices can be reset to the factory settings and firmware restarted. License Agreement By downloading the app, you agree to the terms of the WAGO’s license agreement (accessible via EULA and the support URL below).
Screenshots
Verdict
The clearest difference is update cadence: iO at every 7 months against I/O Field's every 14 months. 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.
iO ships an update every 7 months, I/O Field every 14 months. The most recent releases landed on November 1, 2026 and October 30, 2026 respectively.
| Parameter | iO | I/O Field |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 7 months — better | Every 14 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 12.4 — better |
| Further details — not scored | ||
| Size | 11 MB | 123 MB |
| Age rating | 4+ | 4+ |
| Developer | Lemonage Software | WAGO Kontakttechnik GmbH & Co. KG |
In-app purchases
iO
No in-app purchases
I/O Field
No in-app purchases
