OPTICHECK Level Mobile vs PLC Ninja
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OPTICHECK Level Mobile
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Mobile app for wireless device commissioning, verification and monitoring of KROHNE OPTIWAVE devices. OPTICHECK Level Mobile is part of myDevice, KROHNE’s new suite of Smart Service Tools. OPTICHECK Level Mobile features: • Wireless commissioning and device parametrisation via secure Bluetooth® connection • Verification without measurement interruption • Monitoring of meter performance and application parameters OPTICHECK Level Mobile works with the new OPTIWAVE radars from KROHNE.
PLC Ninja
Access live PLC data directly from your mobile device. Connect via Ethernet, Wi-Fi, or serial adapter to monitor inputs, outputs, timers, counters, and analog values in real-time while in the field.
- Real-time PLC data monitoring
- Ethernet, Wi-Fi, and serial connection support
- View inputs and outputs
- Monitor timers and counters
- Access analog values
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PLC Ninja puts live PLC data on your phone. Connect over Ethernet, Wi-Fi, or a serial adapter, and see every input, output, timer, counter and analog value updating in real time — standing at the panel, not walking back to the office. PLC Ninja is an independent product and is not affiliated with, endorsed by, or sponsored by Rockwell Automation, Siemens AG, AutomationDirect, or Mitsubishi Electric. Allen-Bradley, ControlLogix, CompactLogix, GuardLogix, MicroLogix, SLC 500, RSLogix and Studio 5000 are trademarks of Rockwell Automation. SIMATIC, S7 and LOGO! are trademarks of Siemens AG. DirectLOGIC is a trademark of AutomationDirect. MELSEC and FX are trademarks of Mitsubishi Electric. All product names are used only to identify the equipment this app can connect to. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://plcninja-support.github.io/support/privacy.html
Screenshots
Verdict
The clearest difference is in-app purchases: OPTICHECK Level Mobile at none against PLC Ninja's 6. OPTICHECK Level Mobile also leads on device support (3 vs 1) and iOS requirement (11.0 vs 17.6). PLC Ninja's advantage is update cadence (every 3 weeks vs every 3 months). On price and ads 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. PLC Ninja sells 6 in-app purchases, starting at $3.99 per month. OPTICHECK Level Mobile asks for nothing beyond the download.
OPTICHECK Level Mobile ships an update every 3 months, PLC Ninja every 3 weeks. The most recent releases landed on October 4, 2026 and October 5, 2026 respectively.
| Parameter | OPTICHECK Level Mobile | PLC Ninja |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (3 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 3 — better |
| Update frequency | Every 3 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 11.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 242 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | KROHNE Messtechnik GmbH | SHAOHUA YI |
In-app purchases
OPTICHECK Level Mobile
No in-app purchases
PLC Ninja
- Standard$3.991 Month
- Professional$8.991 Month
- Ultimate$14.991 Month
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- Standard$39.991 Year
- Professional$89.991 Year
- Ultimate$149.991 Year
Questions
Is OPTICHECK Level Mobile free?
Is PLC Ninja free?
Do OPTICHECK Level Mobile or PLC Ninja have ads?
Which is updated more often, OPTICHECK Level Mobile or PLC Ninja?
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