Speedbox Digital Speedometer vs Lens Smudge Detection
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Speedbox Digital Speedometer
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.
- 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
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Digital Speedometer is a free GPS based digital head up display (HUD) that shows useful speed. It is very useful if you want to verify your vehicle speed when cycling, running, flying, sailing. The display can be switched between normal viewing and HUD mode which mirrors the display for viewing asa a reflection in a vehicle windshield. Also displays the longitudinal and transverse slope of the car, in degrees, the magnitude of ascent and descent in percentages. Features: Current speed (choose MPH, KMPH or KNOT) Average speed Maximum speed Show Current time HUD Display head-up (mirror affect) Display road name Display speed limit of the road Display current weather condition Display compass Display odometer Shows speed camera locations and warns
Lens Smudge Detection
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This app can detect images taken with dirt or foreign objects on the lens. Dirt refers to anything covering the lens, such as fingerprints or raindrops, which can cause blurring or haze in images. This feature helps you find the best frames from a set of videos or images. The Lens Smudge Detection results display a confidence score from 0.0 to 1.0. This indicates the likelihood that there was dirt or a malfunction on the lens at the time of shooting. A confidence score of 1.0 means there is a very high probability that dirt or foreign objects were on the lens at the time of shooting. Running the app requires a device with A14 Bionic chips(iPhone 12) and later.
Screenshots
Verdict
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.
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.
Speedbox Digital Speedometer ships an update every 5 months, Lens Smudge Detection weekly. The most recent releases landed on September 25, 2026 and September 10, 2026 respectively.
| Parameter | Speedbox Digital Speedometer | Lens Smudge Detection |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (6.1K ratings) — better | — |
| Positive reviews | 60.7% of reviews | — |
| Number of ratings | 6.1K — better | — |
| Update frequency | Every 5 months | Weekly — better |
| Ads | Yes | Yes |
| In-app purchases | No | No |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone |
| Requires iOS | 13.0 — better | 26.5 |
| Further details — not scored | ||
| Size | 7 MB | 42 MB |
| Age rating | 4+ | 4+ |
| Developer | UniCom Technology | Hideaki Uchikoshi |
Bugs and requests
Speedbox Digital Speedometer
Reported bugs
3 issues- Turns off music when over speed limit
- Compass is inaccurate
- Doesn't work properly, crashes on launch
Requested features
3 requests- Add trip time and distance tracking
- Allow customization of speed limit settings
- Offer a paid ad-free version
Lens Smudge Detection
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Speedbox Digital Speedometer
No in-app purchases
Lens Smudge Detection
No in-app purchases
Questions
Is Speedbox Digital Speedometer free?
Is Lens Smudge Detection free?
Do Speedbox Digital Speedometer or Lens Smudge Detection have ads?
Which is updated more often, Speedbox Digital Speedometer or Lens Smudge Detection?
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