# ORP Basic for Jenco ORP650B vs T

The clearest difference is review sentiment: ORP Basic for Jenco ORP650B at 100% against T's 22%. ORP Basic for Jenco ORP650B also leads on iOS requirement (9.0 vs 15.6). T's advantage is update cadence (every 2 months vs every 15 months). On price, ads, in-app purchases and monetization model there is nothing between them.

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

ORP Basic for Jenco ORP650B ships an update every 15 months, T every 2 months. The most recent releases landed on September 28, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | ORP Basic for Jenco ORP650B | T |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/orp-basic-for-jenco-orp650b/id1315381470/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | **100.0% of reviews** | 22.2% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 15 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 19 MB | 17 MB |
| Requires iOS | **9.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jenco Instruments, Inc.](https://appshunter.io/developer/1275832649) | [江波 夏](https://appshunter.io/developer/895730400) |

## What reviewers say

### ORP Basic for Jenco ORP650B

[App page](https://appshunter.io/ios/app/orp-basic-for-jenco-orp650b/id1315381470)

This app pairs with a Jenco ORP Bluetooth tester to provide accurate ORP and temperature readings. It offers guided calibration, a clear display of measurements, and useful features like calibration reminders and battery life indicators.

**Highlights:** Accurate ORP and temperature measurement, Bluetooth pairing with Jenco tester, Guided calibration procedures, Reading quality indicator, Displays tester battery life, Pause readings (Hold)

**Features:** macOS Compatibility

**In-app purchases:** none


### T

[App page](https://appshunter.io/ios/app/t-sensor/id1457423534)

This app connects to nearby Bluetooth temperature sensors to display readings for temperature, humidity, air pressure, and altitude. It presents this data in both list and graph formats for easy monitoring.

**Highlights:** Scans nearby Bluetooth temperature sensors, Displays temperature, humidity, air pressure, altitude, Data presented in list view, Data presented in graph view, Connects to multiple sensor types

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

**In-app purchases:** none


## Frequently asked questions

### Is ORP Basic for Jenco ORP650B free?

ORP Basic for Jenco ORP650B is free to download, with no in-app purchases.

### Is T free?

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

### Do ORP Basic for Jenco ORP650B or T have ads?

Neither ORP Basic for Jenco ORP650B nor T shows ads.

### Which is updated more often, ORP Basic for Jenco ORP650B or T?

ORP Basic for Jenco ORP650B ships an update every 15 months, and T every 2 months. Most recently, ORP Basic for Jenco ORP650B was updated on September 28, 2026 and T on October 3, 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.*