PSExampleApp vs Unit Converter For Engineers
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PSExampleApp
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The PSExampleApp is a simple open-source application that guides a user to do a measurement with a PalmSens device to measure concentrations in a liquid sample. The app can be re-configured without code for use with (bio)sensors measuring a specific analyte using a linear calibration curve. The application provides clear instructions, so that the user follows a simple flow to connect to a device and run a measurement with just a few taps. The app’s default configuration is set for detection of Heavy Metals using ItalSens screen-printed-electrodes for heavy metal detection. It can be download from the app store and configured for your own need or serve as an example for your own app. The source code can be found at: https://github.com/PalmSens/PSExampleApp .
Unit Converter For Engineers
This app provides a comprehensive unit conversion tool specifically designed for engineers, offering specialized units not found in standard converters. It features offline functionality, fast search, and a clean interface, replacing the need for multiple reference materials.
- Specialized engineering units
- Offline functionality
- Fast search and instant conversion
- Fraction input mode
- Ad-free interface
- Scientific notation support
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Built for engineers who work with units most converters don’t have. No ads. No popups. No distractions. If you’ve ever opened PDFs, charts, or old handbooks to convert Rockwell hardness, wire gauge, HVAC airflow, radiation dose, water hardness, or torque units — this app replaces all of that. Units you usually can’t find in converter apps Material Hardness Rockwell (HRC, HRB, HRA), Vickers, Brinell, Knoop, Mohs, Shore Wire Gauge AWG, SWG, MCM, kcmil, diameter, cross-sectional area HVAC & Airflow CFM, ACH, BTU/h, tons of cooling, kW, airflow per area and per person Water Quality & Chemistry ppm, mg/L as CaCO₃, grains per gallon (US/UK), °dH, °fH, dKH, mmol/L, meq/L Radiation & Radioactivity Becquerel, Curie, Gray, rad Mechanical & Structural Torque, stress, density, pressure, moment of inertia (kg·m² ↔ slug·ft²) Built for real work environments • Works 100% offline in labs, plants, and job sites • Fast search and instant conversion • Scientific notation for precision work • Fraction input mode for field and construction use • Clean, engineer-friendly interface — no ads, ever This app replaces reference charts, calculators, handbooks, and repeated Google searches with one reliable tool in your pocket. Pricing 7-Day Free Trial $9.99/year full access $29.99 lifetime access Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://unitconvertx.github.io/docs/privacy.html
Screenshots
Verdict
The clearest difference is in-app purchases: PSExampleApp at none against Unit Converter For Engineers's 2. PSExampleApp also leads on update cadence (daily vs every 9 days). On price, ads, device support and iOS requirement 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. Unit Converter For Engineers sells 2 in-app purchases, starting at $9.99 per year. PSExampleApp asks for nothing beyond the download.
PSExampleApp ships an update daily, Unit Converter For Engineers every 9 days. The most recent releases landed on November 7, 2026 and October 30, 2026 respectively.
| Parameter | PSExampleApp | Unit Converter For Engineers |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (3 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 3 — better |
| Update frequency | Daily — better | Every 9 days |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Freemium |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.2 | 16.2 |
| Further details — not scored | ||
| Size | 131 MB | 5 MB |
| Age rating | 4+ | 17+ |
| Developer | PalmSens BV | Amanuel Abebaw |
In-app purchases
PSExampleApp
No in-app purchases
Unit Converter For Engineers
- Annual Subscription7 Days trial$9.991 Year
- Lifetime Access$29.99
Questions
Is PSExampleApp free?
Is Unit Converter For Engineers free?
Do PSExampleApp or Unit Converter For Engineers have ads?
Which is updated more often, PSExampleApp or Unit Converter For Engineers?
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