# Speedbox Digital Speedometer vs Lens Smudge Detection

The clearest difference is update cadence: Lens Smudge Detection at weekly against Speedbox Digital Speedometer's every 5 months. Speedbox Digital Speedometer's advantage is device support (4 vs 1) and iOS requirement (13.0 vs 26.5). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Speedbox Digital Speedometer ships an update every 5 months, Lens Smudge Detection weekly. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Speedbox Digital Speedometer | Lens Smudge Detection |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (6.2K ratings)](https://appshunter.io/ios/app/speedbox-digital-speedometer/id1079304431/reviews)** | — |
| Number of ratings | **6.2K** | — |
| Positive reviews | 62.5% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 5 months | **Weekly** |
| Monetization | Ad-supported | — |
| Size | 7 MB | 42 MB |
| Requires iOS | **13.0** | 26.5 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [UniCom Technology](https://appshunter.io/developer/1270764210) | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) |

## What reviewers say

### Speedbox Digital Speedometer

[App page](https://appshunter.io/ios/app/speedbox-digital-speedometer/id1079304431)

This free GPS-based app functions as a digital speedometer and head-up display. It shows current speed, average speed, maximum speed, and road information. It also provides slope data and weather conditions, with optional HUD mirroring for windshield reflection.

**Highlights:** GPS Speedometer (MPH, KMPH, KNOT), HUD Display (Mirror Mode), Slope and Ascent/Descent Display, Road Name and Speed Limit, Current Weather Conditions, Compass and Odometer, Speed Camera Alerts

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Accurate speed display
- 🚀 Works well for motorcycles and bikes
- 💡 Useful for malfunctioning speedometers
- 👍 Easy to use and navigate
- 👍 Vibrant colors and clear display

**What reviewers complain about**

- 🐛 Incorrect or slow to update speed limits
- 🐛 Compatibility issues with CarPlay
- 🐛 Freezes or stops working without data connection
- 🔋 Drains battery
- 📢 Annoying ads

**Reported bugs**

- Turns off music when over speed limit
- Compass is inaccurate
- Doesn't work properly, crashes on launch

**Requested features**

- Add trip time and distance tracking
- Allow customization of speed limit settings
- Offer a paid ad-free version


### Lens Smudge Detection

[App page](https://appshunter.io/ios/app/lens-smudge-detection/id6771600873)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Speedbox Digital Speedometer free?

Speedbox Digital Speedometer is free to download, with no in-app purchases.

### Is Lens Smudge Detection free?

Lens Smudge Detection is free to download, with no in-app purchases.

### Do Speedbox Digital Speedometer or Lens Smudge Detection have ads?

Both Speedbox Digital Speedometer and Lens Smudge Detection show ads.

### Which is updated more often, Speedbox Digital Speedometer or Lens Smudge Detection?

Speedbox Digital Speedometer ships an update every 5 months, and Lens Smudge Detection weekly. Most recently, Speedbox Digital Speedometer was updated on October 26, 2026 and Lens Smudge Detection on October 25, 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.*