Comparison

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.

Head to head
About

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.

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
Read full description

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

About

Lens Smudge Detection

Features
Read full description

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

Speedbox Digital Speedometer4 screens
Lens Smudge Detection1 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

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.

Scorecard3 real differences · 7 level
Speedbox Digital Speedometer versus Lens Smudge Detection: the parameters behind the verdict, then further details
ParameterSpeedbox Digital SpeedometerLens Smudge Detection
PriceFreeFree
Rating4.5 (6.1K ratings) — better—
Positive reviews60.7% of reviews—
Number of ratings6.1K — better—
Update frequencyEvery 5 monthsWeekly — better
AdsYesYes
In-app purchasesNoNo
MonetizationAd-supported—
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone
Requires iOS13.0 — better26.5
Further details — not scored
Size7 MB42 MB
Age rating4+4+
DeveloperUniCom TechnologyHideaki 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

None

Speedbox Digital Speedometer

No in-app purchases

None

Lens Smudge Detection

No in-app purchases

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 September 25, 2026 and Lens Smudge Detection on September 10, 2026.

Other comparisons