HgBarometer vs ProKit
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
HgBarometer
This app assists users of mercury barometers by simplifying pressure calculations. It helps determine barometric pressure by accounting for meniscus height, instrument temperature, and local gravity. It also offers unit conversions and can be used to calibrate barometers.
- Simplifies mercury barometer pressure calculations
- Accounts for meniscus height, temperature, and gravity
- Supports multiple pressure units
- Facilitates barometer calibration
- Allows sharing of observations and results
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This app is an invaluable companion for users of mercury barometers. It is also of a highly didactical value for the understanding of barometric pressure related phenomena like different measurement units for this quantity. When using an old-style mercury barometer one must determine the heights at the top and at the glass contact of the meniscus. Moreover, the instrument temperature as well as the gravitational acceleration at the site is needed to estimate the actual barometric pressure. In the past cumbersome tables or laborious calculations were needed to correct the various influence quantities. This app saves you from this trouble. On selected devices you can compare the build-in altimeter with the calculated pressure value of the mercury barometer. Features: - Natural user interface. - Choice between many different pressure units. - Observations and results can be shared in various ways. - May be used to calibrate your mercury barometer (or your iOS device, whichever you deem more accurate)
ProKit
This utility app offers a suite of tools including a barometer for altitude and pressure, a speedometer, a decibel meter, a heart rate monitor, a compass, NFC tag management, and QR code generation/scanning. It also includes Sudoku puzzles and guided breathing exercises.
- Barometer for altitude and pressure
- Speedometer with customization
- Decibel meter with live graphs
- Heart rate monitor via camera
- NFC tag reader/writer
- QR code creator and scanner
- Sudoku puzzles with statistics
- Guided breathing exercises
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ProKit: Barometer & Tools brings measurements, tracking and everyday utilities together in one modern, easy-to-use app. BAROMETER AND WEATHER • View local and sea-level pressure. • Track the altitude of your current location. • Review pressure and altitude changes with charts. • Access temperature, humidity, feels-like temperature and dew point. • Follow precipitation, cloud cover, visibility, wind and UV values. • View current conditions on the weather radar. SPEED AND TRIP TRACKING • View your current, average and maximum speed. • Track driving time, moving time, stopped time and distance. • Review trip history, route summaries and altitude changes. • Choose from different speed and altitude units. COMPASS AND DEVICE SENSORS • Use the magnetic compass and magnetometer. • Follow magnetic-field values live. • View the status of GPS, accelerometer, gyroscope, barometer and other device sensors. • Review hardware, system, battery, storage and connectivity information. EVERYDAY UTILITIES • Decibel meter • Heart-rate tool • NFC reading and writing • QR code creation and scanning • Breathing exercises • Sudoku • BlockNova • Device test center ProKit’s clean design and customizable tools help you reach the information you need quickly. Some features depend on your device hardware, sensor support, location permissions and internet connection. Measurements are for informational purposes only; the app is not a medical device.
Screenshots
Verdict
The clearest difference is rating: ProKit at 5.0 against HgBarometer's 4.0. ProKit also leads on update cadence (every 2 weeks vs every 4 months). HgBarometer's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 18). On price, ratings volume, ads and in-app purchases 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.
ProKit holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
HgBarometer ships an update every 4 months, ProKit every 2 weeks. The most recent releases landed on September 17, 2026 and October 2, 2026 respectively.
| Parameter | HgBarometer | ProKit |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (1 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 1 | 1 |
| Update frequency | Every 4 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 12.0 — better | 18 |
| Further details — not scored | ||
| Size | 8 MB | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | Michael Matus | omer yuksel |
Customer experience
HgBarometer
ProKit
In-app purchases
HgBarometer
No in-app purchases
ProKit
No in-app purchases
Questions
Is HgBarometer free?
Is ProKit free?
Which has better reviews, HgBarometer or ProKit?
Do HgBarometer or ProKit have ads?
Which is updated more often, HgBarometer or ProKit?
Other comparisons
