AirProbe D86 vs Guardian Call
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
AirProbe D86
This application facilitates digital temperature measurement for manual distillation tests, specifically for petroleum products. It allows users to record temperature, time, and speed at defined volume points with a single tap, and offers features for creating and editing distillation methods. The app automatically corrects temperature readings for barometric pressure and thermometer lag, and includes a calibration menu.
- Digital temperature measurement
- ASTM D86/D1078/D850 compliant
- Record temperature, time, and speed
- Create and edit distillation methods
- Automatic temperature correction
- Device and PT-100 calibration
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The AirProbe D86 app connects with an AirProbe D86 device that is used for digital temperature measurement in a manual distillation test according to ASTM D86/D1078/D850. Record temperature, time and speed at pre-defined volume points with a single tap. Create and edit distillation methods and programs for specific petroleum products. Absolute PT-100 temperature readings are automatically corrected for barometric pressure and stem and lag time of the ASTM 7&8 mercury thermometer. App includes special menu for calibration of both the PT-100 and the AirProbe D86 device.
Guardian Call
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Guardian Call is a simple and secure communication app that allows you to establish a secure call to a specific contact. With just a few taps, you can connect with your trusted contact and have a secure conversation.
Screenshots
Verdict
The clearest difference is update cadence: AirProbe D86 at every 6 weeks against Guardian Call's every 4 months. AirProbe D86 also leads on device support (3 vs 1) and iOS requirement (12.0 vs 17.0). On price, ads and in-app purchases 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.
AirProbe D86 ships an update every 6 weeks, Guardian Call every 4 months. The most recent releases landed on October 22, 2026 and October 27, 2026 respectively.
| Parameter | AirProbe D86 | Guardian Call |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 6 weeks — better | Every 4 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 12.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 14 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | ORBIS BV | DSIRF GmbH |
In-app purchases
AirProbe D86
No in-app purchases
Guardian Call
No in-app purchases
Questions
Is AirProbe D86 free?
Is Guardian Call free?
Do AirProbe D86 or Guardian Call have ads?
Which is updated more often, AirProbe D86 or Guardian Call?
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