Theta vs Tek
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Theta
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Theta-Meter X Theta-Meter X is a companion application designed to work with compatible Theta-Meter hardware devices. The app connects via Bluetooth Low Energy (BLE 4.0 or higher) or Wi-Fi and displays real-time electrical resistance measurements from objects connected to the device’s electrodes. Key Features: - Real-time visualization of electrical resistance changes - Clear analog-style needle indicator for dynamic monitoring - Bluetooth LE and Wi-Fi connectivity - Simple, user-friendly interface - Stable data transmission from supported hardware devices How It Works When connected to a compatible device, the app measures and displays variations in electrical resistance detected between attached electrodes. The needle indicator provides a continuous visual representation of resistance fluctuations, allowing users to observe dynamic changes over time. Intended Use Theta-Meter X is designed for general experimental, educational, and technical purposes involving electrical resistance measurement. It is intended for use with compatible hardware devices only. Important Notice This application and the associated hardware are not medical devices. They are not intended for diagnosing, treating, curing, preventing, or mitigating any disease or health condition. The app does not provide medical, therapeutic, or psychological advice.
Tek
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Tek-Vor 1300C Vortex Flow Meter is a versatile instrument that calculates the mass flow, volumetric flow rate, temperature, pressure, and density of any liquid, gas or steam through a pipeline. It finds widespread application in several industries including Petrochemical, Chemical, Pharmaceutical, Food and Beverage, Water and Wastewater Treatment. This flow meter operates on the principle of Karman Vortex Theory. It has 2-line LCD display with 3 button control. Tek-Vor 1300C Vortex meter is designed for use in 1 to 12” pipes. It provides better stability and good accuracy. Every Bluetooth -enabled smartphone or tablet can display output signal through the app (iOS). Bluetooth Radar Level Transmitter is simple, safe, secure and can be accessed remotely via Bluetooth.
Screenshots
Verdict
The clearest difference is iOS requirement: Tek at 12.1 against Theta's 17. 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.
| Parameter | Theta | Tek |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 months | — |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, Mac — better | iPhone, iPod |
| Requires iOS | 17 | 12.1 — better |
| Further details — not scored | ||
| Size | 18 MB | 68 MB |
| Age rating | 12+ | 17+ |
| Developer | Mikhail Fedorov | Josh Waters |
In-app purchases
Theta
No in-app purchases
Tek
No in-app purchases









