ULTRAPEN™ PTBTx™ vs TF FPV
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ULTRAPEN™ PTBTx™
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.
- 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
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REQUIRED EQUIPMENT: ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ Myron L® Company ULTRAPEN PTBTX (First Generation Ultrapen; Lot Code Y1930 and earlier) Models: PTBT1; PTBT2 or PTBT3 DOES NOT WORK with Myron L® Company ULTRAPEN PTBTx2 (Second Generation; Lot Code Y1931 and later). INTRODUCTION ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ The ULTRAPEN PTBTX App is a GUI and communication application that, when paired with one of Myron L® Company's First generation ULTRAPEN pocket testers, converts your iOS device into an accurate, reliable, fast and simple to use measurement and data storage device to use in diverse water quality applications. ADVANCED FEATURES INCLUDE: ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ - Wireless communication between the tester and your iOS device means no bothersome wires to interfere with quickly moving from sample to sample and the paired mobile device can be held safely away from the liquid samples being measured. - Intuitive GUI design for easily pairing, calibrating, measuring and recording measurements in the App on-board database. - The database can be sorted, filtered and exported via your devices email App as either .xls; .xlsx, .csv formatted attachments - Automatic records made of every calibration performed on each PTBTX2 pocket tester. WORKS WITH ULTRAPENX2 POCKET TESTERS ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ULTRAPEN PTBT1 (First Generation) - Measures Conductivity, Total Dissolved Solids (TDS), Salinity, and Temperature. ULTRAPEN PTBT2 (First Generation) - Measures pH and Temperature. Can be calibrated using 1, 2, and 3 point calibration options. ULTRAPEN PTBT3 (First Generation) - Measures Oxidation Reduction Potential (ORP) and Temperature. Can be calibrated to one of three different calibration points (80 mV, 260 mV, or 470 mV). The PTBT2 and the PTBT3 Include a sample and hold mode as well as a live measurements mode. ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ Myron L® is a registered trademark of the Myron L® Company, 2450 Impala Drive, Carlsbad CA, 92010-7226 Bluetooth® is a registered trademark of Bluetooth SIG
TF FPV
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TF FPV is an APP that can realize real-time video transmission through WIFI connection uav, remotely control uav to fly, take photos and videos, and have various filter effects to choose from
Screenshots
Verdict
The clearest difference is update cadence: TF FPV at every 2 weeks against ULTRAPEN™ PTBTx™'s every 5 months. TF FPV also leads on iOS requirement (11.0 vs 15.0). On price, ads, in-app purchases and device support 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.
ULTRAPEN™ PTBTx™ ships an update every 5 months, TF FPV every 2 weeks. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.
| Parameter | ULTRAPEN™ PTBTx™ | TF FPV |
|---|---|---|
| Price | Free | Free |
| Rating | 3.7 (3 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 5 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 9 MB | 123 MB |
| Age rating | 4+ | 17+ |
| Developer | Myron L Company | Guangzhou Xingde Industrial Development Co., LTD |
In-app purchases
ULTRAPEN™ PTBTx™
No in-app purchases
TF FPV
No in-app purchases
Questions
Is ULTRAPEN™ PTBTx™ free?
Is TF FPV free?
Do ULTRAPEN™ PTBTx™ or TF FPV have ads?
Which is updated more often, ULTRAPEN™ PTBTx™ or TF FPV?
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