Comparison

gravity clock vs Luke Roberts

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

gravity clock

Experience time's passage through a visually stunning clock that destroys and reconstructs its face. Numbers break off and fall, creating a dynamic and beautiful display of seconds ticking by.

Highlights
  • Realistic gravity/physics simulation
  • Digital and analog modes
  • Customizable gravity strength and direction
  • Night mode
  • Time speaking functionality
  • Customizable colors
Features
Read full description

Watching the time pass has never been so beautiful! Gravity Clock visualizes the passage of time by the permanent destruction and reconstruction of the clock-face. Every second the hand breaks numbers out of the dial and lets them drop to the floor where they get buried by the following numbers and eventually wither away to make room for the endless succession of time. Watch the video here: http://joerg.piringer.net/gravityclock Features: - realistic gravity/physics simulation, numbers fall as if they were real objects - digital and analog mode - control strength and direction of gravity with presets or customize them - night mode with reduced brightness - can speak the time every minute, every 5 minutes etc. - change colors with presets or customize them - universal app supports iPhone/iPod touch and iPad in all orientations, resolutions and window sizes - looks perfect in an iPhone/iPad-dock

About

Luke Roberts

Control your luvo Matrix LED Lamp with intuitive paint gestures. Adjust intensity, direction, and color to create custom lighting scenes for any mood or occasion. Save your personalized lighting designs for easy recall.

Highlights
  • Adjust light intensity, direction, and color
  • Paint light with gestures
  • Control downlight and uplight independently
  • Create and save personalized lighting scenes
  • Utilize preset light scenes
  • Design glare-free indirect lighting
Read full description

Experience lighting redefined with the luvo Matrix LED Lamp and the Luke Roberts App. Adjust the intensity, direction, and colour of your light, creating a perfectly illuminated space for any moment. Simple paint gestures on your iPhone or iPad make it effortless to design the lighting you desire. PAINT YOUR LIGHT — Control downlight and uplight independently on your luvo lamp. — Select a colour and paint it in the desired direction to illuminate specific areas. — Fill the whole canvas to brighten up the entire room. — Switch from evenly distributed downlight, to spots, or ambient uplight. THE PERFECT MOOD FOR ANY OCCASION — Transform your space by painting vibrant colours on your ceiling to match any moment. — Mix shades and project them in different directions — Set the perfect atmosphere with glare-free indirect lighting and create cozy, inviting spaces for relaxation or entertaining. PERSONALIZED LIGHTING SCENES — Explore a variety of preset light scenes, customize them to suit your mood — Or design your own and save them in your personal lighting catalogue in the Luke Roberts App.

Screenshots

gravity clock4 screens
Luke Roberts4 screens

Verdict

The call

The clearest difference is review sentiment: gravity clock at 89% against Luke Roberts's 25%. gravity clock also leads on rating (4.8 vs 3.7) and ratings volume (18 vs 3). Luke Roberts's advantage is price (Free vs $0.99). On update cadence, ads, in-app purchases and device support 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

Luke Roberts is free to download; gravity clock costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

gravity clock holds the better App Store score, 4.8 against 3.7. That said, the two scores are not equally well evidenced: gravity clock has 18 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 89% of gravity clock's written reviews are positive against 25% of Luke Roberts's.

UpkeepUpdate frequency

gravity clock ships an update every 2 months, Luke Roberts every 3 months. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.

Scorecard6 real differences · 4 level
gravity clock versus Luke Roberts: the parameters behind the verdict, then further details
Parametergravity clockLuke Roberts
Price$0.99Free — better
Rating4.8 (18 ratings) — better3.7 (3 ratings)
Positive reviews88.8% of reviews — better25.0% of reviews
Number of ratings18 — better3
Update frequencyEvery 2 months — betterEvery 3 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS10.3 — better13.0
Further details — not scored
Size6 MB51 MB
Age rating4+4+
Developerjoerg piringerLR Innovation Lab GmbH

Customer experience

gravity clock

All ratings18 ratings
Positive88.9%
Neutral11.1%
Negative0.0%
Written reviews242 reviews
Positive88.8%
Neutral6.2%
Negative5.0%

Luke Roberts

All ratings3 ratings
Positive33.3%
Neutral66.7%
Negative0.0%
Written reviews12 reviews
Positive25.0%
Neutral33.3%
Negative41.7%

Bugs and requests

gravity clock

Reported bugs

2 issues
  • Crashes at midnight
  • Twitter integration not working

Requested features

5 requests
  • Add Arabic-Indic numerals
  • Restore alarm function
  • Implement 64-bit support for iOS 11
  • Add countdown timer
  • Allow setting clock as device screensaver

Luke Roberts

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

gravity clock

No in-app purchases

None

Luke Roberts

No in-app purchases

Questions

Is gravity clock free?
gravity clock costs $0.99, with no in-app purchases.
Is Luke Roberts free?
Luke Roberts is free to download, with no in-app purchases.
Which has better reviews, gravity clock or Luke Roberts?
gravity clock is rated higher. gravity clock averages 4.8 out of 5 from 18 ratings, while Luke Roberts averages 3.7 from 3 ratings.
Do gravity clock or Luke Roberts have ads?
Neither gravity clock nor Luke Roberts shows ads.
Which is updated more often, gravity clock or Luke Roberts?
gravity clock ships an update every 2 months, and Luke Roberts every 3 months. Most recently, gravity clock was updated on November 1, 2026 and Luke Roberts on November 2, 2026.

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