Knog Mobile vs Precision Unit Converter
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Knog Mobile
This device acts as a bicycle alarm and tracker, integrating with Apple's Find My network. It alerts you to movement and helps locate your bike if it's moved.
- Bicycle alarm
- Apple Find My network integration
- Motion-sensitive alarm
- USB-C rechargeable
- 6-month battery life
- Knog App control
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Scout is a bicycle alarm and finder, designed to seamlessly integrate into Apple’s FindMy network of products, allowing you to keep track of your beloved bikes whereabouts, even when you’re not riding. The lightweight, and low-profile SCOUT discretely and securely mounts to any water bottle cage using the security screws provided. Once armed (via the app or on the unit itself) any movement of a bike fitted with Scout will trigger the motion sensitive 85 db alarm alerting the owner. If a Scout fitted bike is not where the owner last left it, then they can simply locate its position using Apple’s FindMy network. The SCOUT is USB-C rechargeable and has a runtime of approximately 6 months with standard use. Riders can activate/deactivate the motion sensitive alarm, locate the device, and check the battery life, all through the Knog App. Scout is the future of bike security.
Precision Unit Converter
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Precision Unit Converter makes measurement conversion easier to understand, faster to navigate, and more useful to learn from. It combines a high-precision converter with a visual library of 107 categories and 920 units, guided lessons, practice, search, favorites, and history. CONVERT WITH CLARITY Choose a measurement category, select your From and To units, enter a value, and get a clean result. Swap units in one tap, copy the answer, or save the conversion for later. Illustrated unit selectors make long technical lists easier to scan. The converter supports decimal and scientific notation, handles very large and very small values, and uses clear safeguards for long entries. EXPLORE 107 CATEGORIES AND 920 UNITS Start with familiar fields such as length, area, volume, mass, time, temperature, angle, speed, force, pressure, energy, power, current, and voltage. Then continue into specialized engineering and science topics including thermal transport, rotational mechanics, electric fields, magnetic systems, molar properties, fluid behavior, material response, and combustion. Core and Expert collections keep the catalog approachable. Each category has its own visual cover, and every unit has an individual illustration, name, symbol, category, and concise educational description. SEARCH THE COMPLETE UNIT LIBRARY Find a specific unit across the full 920-unit catalog instead of opening categories one by one. Search by localized name, English name, or symbol, then narrow results by Core, Expert, favorites, or category. Open a unit profile to review its meaning, category, base unit, and a verified relationship to that base. From the same screen, set the unit as the starting value for a conversion or open its full category. LEARN HOW THE SYSTEM WORKS The Learn area turns the unit catalog into a structured course library. Browse five core subject groups and eight advanced groups, continue your most recent lesson, and track progress across all 107 categories. Each lesson explains the category concept, identifies the base unit, introduces useful unit relationships, and presents calculated examples. When you are ready, complete the lesson and start a five-question practice session covering base-unit recognition, unit relationships, and numerical conversion. Practice feedback appears after each answer. Passing results update your progress, while retry and review options make it simple to reinforce a topic without losing your place. SAVE, RESTORE, AND COMPARE Save useful results to Conversion History and return to them whenever needed. Each record keeps its category, starting unit, destination unit, input, output, and time. Reopen a record to restore the exact conversion setup, copy its value, remove one item, or clear the list. Favorite categories stay easy to reach from the main library and remain available as filters in unit search. A VISUAL TOOL FOR REAL WORK Clear hierarchy, large controls, searchable selectors, responsive layouts, and light or dark color themes help the interface stay readable during study or detailed technical work. The interface and educational content are available in English, German, Simplified Chinese, Korean, French, and Spanish. Precision Unit Converter is useful for students, teachers, engineers, technicians, makers, travelers, cooks, and anyone who wants more context than a basic conversion box provides. Convert a value when you need the answer. Open a lesson when you want to understand why it works.
Screenshots
Verdict
The clearest difference is price: Knog Mobile at Free against Precision Unit Converter's $7.99. Knog Mobile also leads on update cadence (every 2 months vs every 8 months). On ads, in-app purchases, 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
Knog Mobile is free to download; Precision Unit Converter costs $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Knog Mobile ships an update every 2 months, Precision Unit Converter every 8 months. The most recent releases landed on October 23, 2026 and October 7, 2026 respectively.
| Parameter | Knog Mobile | Precision Unit Converter |
|---|---|---|
| Price | Free — better | $7.99 |
| Rating | 2.3 (51 ratings) — better | — |
| Positive reviews | 19.6% of reviews | — |
| Number of ratings | 51 — better | — |
| Update frequency | Every 2 months — better | Every 8 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 26 MB | 60 MB |
| Age rating | 4+ | 4+ |
| Developer | Knog Pty Ltd | SimTeCon GmbH |
Bugs and requests
Knog Mobile
Reported bugs
20 issues- App crashes when arming/disarming alarm
- Device disappears from app after updates
- Cannot pair device after factory reset
- Bluetooth connection drops frequently
- Arm button appears as disarm and vice versa
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- Alarm gets stuck in triggered state
- Cannot disarm alarm even when connected
- Firmware update fails or bricks device
- App freezes when opening device settings
- Battery indicator shows incorrect charge level
- Device not discoverable in app despite being in Find My
- App requires force close to reconnect
- Password reset loop prevents account access
- UI elements cut off on smaller screens
- App doesn't detect device despite Bluetooth pairing
- Alarm triggers randomly without cause
- Device unresponsive after phone model change
- App compatibility issues with iOS 18 and newer
- Email confirmation not received during setup
- Device shows connected but buttons unresponsive
Requested features
14 requests- Apple Watch app/companion app
- Siri Shortcuts integration
- Control Center widget for quick arm/disarm
- Home Screen widget for battery status
- Alarm sound preview feature
Show 9 moreShow fewer
- Dark mode support
- Background app refresh functionality
- Activity history/logs of alarm triggers
- Device sharing with multiple users
- Auto-disarm when phone is nearby
- Battery percentage indicator
- Sensitivity adjustment preview
- SMS/email alerts when out of Bluetooth range
- Live activity for armed device status
Precision Unit Converter
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Knog Mobile
No in-app purchases
Precision Unit Converter
No in-app purchases
Questions
Is Knog Mobile free?
Is Precision Unit Converter free?
Do Knog Mobile or Precision Unit Converter have ads?
Which is updated more often, Knog Mobile or Precision Unit Converter?
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