# AirProbe D86 vs Stamp Designer

The clearest difference is update cadence: Stamp Designer at weekly against AirProbe D86's every 6 weeks. AirProbe D86's advantage is monetization model (free vs free with in-app purchases) and iOS requirement (12.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

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, Stamp Designer weekly. The most recent releases landed on November 6, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | AirProbe D86 | Stamp Designer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/airprobe-d86/id1340899042/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Weekly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 14 MB | 100 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ORBIS BV](https://appshunter.io/developer/602147201) | [秀文 石](https://appshunter.io/developer/1896738759) |

## What reviewers say

### AirProbe D86

[App page](https://appshunter.io/ios/app/airprobe-d86/id1340899042)

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.

**Highlights:** 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

**Features:** macOS Compatibility

**In-app purchases:** none


### Stamp Designer

[App page](https://appshunter.io/ios/app/stamp-designer-pdf-e-stamps/id6770826891)

Design custom stamps for personal use on images and documents. Add text, colors, borders, and graphic elements to create unique stamp styles. Easily apply stamps to photos, PDFs, and share your creations.

**Highlights:** Custom stamp style design, Text, color, and border customization, Image cutout, Apply stamps to images, Add stamps to PDF documents, Save and share creations

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is AirProbe D86 free?

AirProbe D86 is free to download, with no in-app purchases.

### Is Stamp Designer free?

Stamp Designer is free to download, with no in-app purchases.

### Do AirProbe D86 or Stamp Designer have ads?

Neither AirProbe D86 nor Stamp Designer shows ads.

### Which is updated more often, AirProbe D86 or Stamp Designer?

AirProbe D86 ships an update every 6 weeks, and Stamp Designer weekly. Most recently, AirProbe D86 was updated on November 6, 2026 and Stamp Designer on October 31, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*