SonitorMOBILE vs PDF Guardㅤ
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SonitorMOBILE
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SonitorMOBILE™ provides best-in-class accuracy and update rates and lets you use your smart device, like your phone, as a locatable. A resolution in the order of centimetres, refresh rates of 1-2 seconds and >99.9% room-level location accuracy are achieved by combining ultrasound and BLE. The solution is based on our patented Fast Ultrasound Echo Location (FUEL™) technology.
PDF Guardㅤ
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PDF Guard: Your Ultimate Solution for PDF Security and Freedom. Easily lock and unlock your PDF files with precision and confidence. Take control of your document privacy and accessibility in just a few clicks. Guard your information, unlock your convenience. Developed by Anvaysoft Programmer- Hrishi Suthar Made with love in India
Screenshots
Verdict
The clearest difference is update cadence: SonitorMOBILE at every 5 weeks against PDF Guardㅤ's every 20 months. PDF Guardㅤ's advantage is iOS requirement (13.0 vs 17). 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.
SonitorMOBILE ships an update every 5 weeks, PDF Guardㅤ every 20 months. The most recent releases landed on October 9, 2026 and October 12, 2026 respectively.
| Parameter | SonitorMOBILE | PDF Guardㅤ |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 weeks — better | Every 20 months |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17 | 13.0 — better |
| Further details — not scored | ||
| Size | 33 MB | 27 MB |
| Age rating | 4+ | 17+ |
| Developer | Sonitor Technologies AS | Hrishi Suthar |
In-app purchases
SonitorMOBILE
No in-app purchases
PDF Guardㅤ
No in-app purchases
Questions
Is SonitorMOBILE free?
Is PDF Guardㅤ free?
Do SonitorMOBILE or PDF Guardㅤ have ads?
Which is updated more often, SonitorMOBILE or PDF Guardㅤ?
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