# ULTRAPEN™ PTBTx™ vs PumpSentri2

The clearest difference is iOS requirement: PumpSentri2 at 12.0 against ULTRAPEN™ PTBTx™'s 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ULTRAPEN™ PTBTx™ ships an update every 5 months, PumpSentri2 every 6 months. The most recent releases landed on October 24, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | ULTRAPEN™ PTBTx™ | PumpSentri2 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (3 ratings)](https://appshunter.io/ios/app/ultrapen-ptbtx/id885545007/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 6 months |
| Monetization | Free | — |
| Size | 9 MB | 31 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Myron L Company](https://appshunter.io/developer/885545010) | [Cornell Pump Company](https://appshunter.io/developer/879210510) |

## What reviewers say

### ULTRAPEN™ PTBTx™

[App page](https://appshunter.io/ios/app/ultrapen-ptbtx/id885545007)

This application transforms your iOS device into a powerful water quality measurement tool when paired with specific pocket testers. It offers wireless data logging, calibration tracking, and exportable reports for various water parameters.

**Highlights:** Wireless communication with pocket testers, Intuitive GUI for pairing and calibration, On-board database for measurements, Data export in .xls, .xlsx, .csv formats, Automatic calibration records, Supports conductivity, TDS, salinity, pH, ORP, and temperature

**Features:** macOS Compatibility

**In-app purchases:** none


### PumpSentri2

[App page](https://appshunter.io/ios/app/pumpsentri2/id6480528615)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ULTRAPEN™ PTBTx™ free?

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

### Is PumpSentri2 free?

PumpSentri2 is free to download, with no in-app purchases.

### Do ULTRAPEN™ PTBTx™ or PumpSentri2 have ads?

Neither ULTRAPEN™ PTBTx™ nor PumpSentri2 shows ads.

### Which is updated more often, ULTRAPEN™ PTBTx™ or PumpSentri2?

ULTRAPEN™ PTBTx™ ships an update every 5 months, and PumpSentri2 every 6 months. Most recently, ULTRAPEN™ PTBTx™ was updated on October 24, 2026 and PumpSentri2 on October 15, 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.*