# PTBTX2™ vs Image Resizer

The clearest difference is in-app purchases: PTBTX2™ at none against Image Resizer's 1. PTBTX2™ also leads on ads (none vs shown) and iOS requirement (13.0 vs 15.1). Image Resizer's advantage is update cadence (fortnightly vs every 15 months). On price and device support there is nothing between them.

Both are free to download. Image Resizer sells 1 one-off in-app purchase. PTBTX2™ asks for nothing beyond the download.

PTBTX2™ ships an update every 15 months, Image Resizer fortnightly. The most recent releases landed on September 29, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | PTBTX2™ | Image Resizer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ptbtx2/id1338848296/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 15 months | **Fortnightly** |
| Monetization | Free | — |
| Size | 17 MB | 65 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Myron L Company](https://appshunter.io/developer/885545010) | [Urmin Hirpara](https://appshunter.io/developer/1890506463) |

## What reviewers say

### PTBTX2™

[App page](https://appshunter.io/ios/app/ptbtx2/id1338848296)

This application transforms your iOS device into a precise water quality measurement tool when paired with compatible pocket testers. It offers wireless connectivity, intuitive data recording, and exportable measurement logs for various water quality parameters.

**Highlights:** Wireless communication with pocket testers, Intuitive GUI for measurements, On-board database for data storage, Sortable, filterable, and exportable data, Automatic calibration records, Supports multiple water quality parameters

**Features:** macOS Compatibility

**In-app purchases:** none


### Image Resizer

[App page](https://appshunter.io/ios/app/image-resizer-reduce-kb-size/id6762501604)

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium – Full Access | $5.99 | one-time |


## Frequently asked questions

### Is PTBTX2™ free?

PTBTX2™ is free to download, with no in-app purchases.

### Is Image Resizer free?

Image Resizer is free to download, with in-app purchases available.

### Do PTBTX2™ or Image Resizer have ads?

Image Resizer shows ads; PTBTX2™ does not.

### Which is updated more often, PTBTX2™ or Image Resizer?

PTBTX2™ ships an update every 15 months, and Image Resizer fortnightly. Most recently, PTBTX2™ was updated on September 29, 2026 and Image Resizer on October 2, 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.*