Otrol vs FinderQuery Client
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Otrol
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Otrol allows you to monitor multiple sensor data in real time and automatically control relays. Receive alert message through APP and keeps you up to speed with the latest situation. Provide factory monitoring system, water tower monitoring, water quality detection, electrical gate detection and other solutions ● Wireless transmission: No longer through wired transmission, convenient and safe ● Exception warning: Real-time notification of abnormal occurrence to reduce risks ● Sensing equipment: It can access the user's existing sensor items to save equipment cost ● Intelligent control: Remote control, or automatic control according to the monitoring value ● Cloud platform: Data digitizing for saving data no longer missing Application scenarios such as water quality monitoring, water level detection tower, automatic start pump, factory wastewater discharge, gate induction, etc
FinderQuery Client
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FinderQuery Client lets you browse and access files on your Mac from your iPhone, iPad, or Apple Vision Pro—directly over your local network. Used together with FinderQuery Server (available on the Mac App Store), you can: • Browse Finder folders with icons, including hidden files • Preview files and folders on your Mac • Stream videos and PDFs instantly without downloading • Share a streaming link (URL) to open files in third-party apps • Download and view supported files directly in the app Privacy & Security Your privacy matters: • Local-network only: the app never sends your data to the internet and connects only to your Mac running FinderQuery Server • Mac-controlled access: the server never initiates connections; connections are started only from your device • Encrypted control connection: mutual TLS (mTLS) encrypts communication between the client and your Mac • Verified pairing: you can connect only after approving the connection on your Mac and confirming the client certificate fingerprint • On-device certificates: the certificate is stored in your Keychain and never leaves your device About streaming links To support opening streams in third-party apps, streamed file delivery isn’t encrypted. Access is still protected using randomized file paths and an authentication token—only someone with the URL can view the file.
Screenshots
Verdict
The clearest difference is update cadence: Otrol at monthly against FinderQuery Client's every 17 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.
Otrol ships an update monthly, FinderQuery Client every 17 months. The most recent releases landed on October 30, 2026 and November 3, 2026 respectively.
| Parameter | Otrol | FinderQuery Client |
|---|---|---|
| Price | Free | Free |
| Update frequency | Monthly — better | Every 17 months |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 17.6 — better | 18.0 |
| Further details — not scored | ||
| Size | 37 MB | 15 MB |
| Age rating | 4+ | 4+ |
| Developer | DoubleVision Technology Co., Ltd. | Weida Fan |
In-app purchases
Otrol
No in-app purchases
FinderQuery Client
No in-app purchases









