# Knog Mobile vs Precision Unit Converter

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.

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.

## The numbers

| Metric | Knog Mobile | Precision Unit Converter |
| --- | --- | --- |
| Price | **Free** | $7.99 |
| Rating | **[2.3 (51 ratings)](https://appshunter.io/ios/app/knog-mobile/id1498719026/reviews)** | — |
| Number of ratings | **51** | — |
| Positive reviews | 19.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 8 months |
| Monetization | Free | — |
| Size | 26 MB | 60 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Knog Pty Ltd](https://appshunter.io/developer/917168361) | [SimTeCon GmbH](https://appshunter.io/developer/1761797043) |

## What reviewers say

### Knog Mobile

[App page](https://appshunter.io/ios/app/knog-mobile/id1498719026)

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.

**Highlights:** Bicycle alarm, Apple Find My network integration, Motion-sensitive alarm, USB-C rechargeable, 6-month battery life, Knog App control

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- ✅ Hardware design is sleek and discreet
- 🔍 Apple Find My integration works well
- 🎯 Alarm functionality effective when working
- 📦 Thoughtful packaging design
- 🔒 Good security concept for bikes

**What reviewers complain about**

- 🐛 App frequently crashes and freezes
- 🔌 Severe battery drain on iPhone
- 📱 Poor app stability and reliability
- 🔗 Constant connection/disconnection issues
- ⚠️ Alarm arm/disarm button often unresponsive

**Reported bugs**

- 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

**Requested features**

- 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


### Precision Unit Converter

[App page](https://appshunter.io/ios/app/precision-unit-converter/id6618147279)

**In-app purchases:** none


## Frequently asked questions

### Is Knog Mobile free?

Knog Mobile is free to download, with no in-app purchases.

### Is Precision Unit Converter free?

Precision Unit Converter costs $7.99, with no in-app purchases.

### Do Knog Mobile or Precision Unit Converter have ads?

Neither Knog Mobile nor Precision Unit Converter shows ads.

### Which is updated more often, Knog Mobile or Precision Unit Converter?

Knog Mobile ships an update every 2 months, and Precision Unit Converter every 8 months. Most recently, Knog Mobile was updated on October 23, 2026 and Precision Unit Converter on October 7, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*