NagTag vs ProKit
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
NagTag
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Create a reminder in a fraction of a second: Snap a pic and we’ll pop up a notification every half hour to make sure you don't forget. Perfect if you've left something on the stove or need to remember to let the dog back in. How does it work? 1. Snap a pic of what you need to remember 2. Get a notification every half hour for the next ten hours to make sure you don't forget it 3. Dismiss the nag notification when you're done
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 • BlokNova • Number 8192 • Minesweeper • Snake Nova • Bubble Shooter • Bomber • 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 update cadence: ProKit at every 3 weeks against NagTag's every 19 months. NagTag's advantage is iOS requirement (13.0 vs 18). 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.
NagTag ships an update every 19 months, ProKit every 3 weeks. The most recent releases landed on October 30, 2026 and October 19, 2026 respectively.
| Parameter | NagTag | ProKit |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (2 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 2 — better |
| Update frequency | Every 19 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 13.0 — better | 18 |
| Further details — not scored | ||
| Size | 14 MB | 28 MB |
| Age rating | 4+ | 4+ |
| Developer | KOALABRAIN LTD | omer yuksel |
In-app purchases
NagTag
No in-app purchases
ProKit
No in-app purchases









