Comparison

Spacetime Clock vs Floating Clock

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

Head to head
About

Spacetime Clock

Explore celestial mechanics and terrestrial positioning with this app. Visualize moon phases, Earth's rotation, and your location's latitude and longitude. It also includes a compass and level meter for your device.

Highlights
  • Moon phases visualization
  • Earth rotation and revolution simulation
  • Latitude and longitude display
  • Compass functionality
  • iPhone level meter
  • Customizable background colors
Features
Read full description

Time, calendars, the movements and positions of celestial bodies, and direction are all closely connected. This app brings together time and place in one view. Alongside the time and date, it shows the phases of the Moon, Earth’s rotation and orbit, latitude and longitude, compass direction, and the iPhone’s level. It lets you see and feel where you are in time and space at a glance. [Top of Screen] MOON: Moon phase (lunar age 0–29) HOURS: Hours (24-hour cycle) MINUTES: Minutes (60-minute cycle) SECONDS: Seconds (60-second cycle) [Center of Screen] The year, month, date, hour, minute, day of the week, and second are displayed. Earth completes one circuit around the center of the screen in 365 days (366 in a leap year). The display uses Earth’s axial tilt to approximate the amount of daylight at that time of year. It does not show precise sunrise or sunset times. The Earth and Moon graphics change depending on whether your current latitude is in the Northern or Southern Hemisphere. [Bottom of Screen] LATITUDE: Latitude (−90° to +90°; positive values indicate north, negative values south) LONGITUDE: Longitude (−180° to +180°; positive values indicate east, negative values west) COMPASS: Direction of north LEVEL: Level, measured along the iPhone’s X and Y axes Choose from four background colors: Space, Midnight, Twilight, and Sky Blue.

About

Floating Clock

Display a customizable digital clock, stopwatch, and countdown timer that floats over other applications or your mobile desktop. Personalize backgrounds and fonts for a unique timekeeping experience.

Highlights
  • Floating clock overlay
  • Stopwatch functionality
  • Countdown timer
  • Customizable backgrounds and fonts
  • Multiple window support
  • Adjustable window size
Features
Read full description

A digital clock tool supporting stopwatch and countdown, which can be suspended on any app and mobile desktop! The background format and font of floating window can be customized. - Floating Clock. One click switch background time! - Support MS digital display! - Multiple windows are available. Double finger zoom size! - Custom configuration. Wait for you to unlock more functions! The features provided by the app are completely FREE!

Screenshots

Spacetime Clock4 screens
Floating Clock4 screens

Verdict

The call

The clearest difference is price: Spacetime Clock at Free against Floating Clock's $5.99. Spacetime Clock also leads on ads (none vs shown) and update cadence (every 2 months vs every 6 months). Floating Clock's advantage is rating (5.0 vs 2.8) and review sentiment (64% vs 41%). On ratings volume, in-app purchases, monetization model and iOS requirement 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

Spacetime Clock is free to download; Floating Clock costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Floating Clock holds the better App Store score, 5.0 against 2.8. Both are backed by a comparable volume of ratings — 4 and 6 respectively. Written reviews point the same way: 41% of Spacetime Clock's written reviews are positive against 64% of Floating Clock's.

UpkeepUpdate frequency

Spacetime Clock ships an update every 2 months, Floating Clock every 6 months. The most recent releases landed on October 14, 2026 and October 9, 2026 respectively.

Scorecard6 real differences · 4 level
Spacetime Clock versus Floating Clock: the parameters behind the verdict, then further details
ParameterSpacetime ClockFloating Clock
PriceFree — better$5.99
Rating2.8 (4 ratings)5.0 (6 ratings) — better
Positive reviews40.9% of reviews64.3% of reviews — better
Number of ratings46 — better
Update frequencyEvery 2 months — betterEvery 6 months
AdsNo — betterYes
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS16.015.0 — better
Further details — not scored
Size6 MB20 MB
Age rating4+4+
Developery-design少都 陈

Customer experience

Spacetime Clock

All ratings4 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews22 reviews
Positive40.9%
Neutral22.7%
Negative36.4%

Floating Clock

All ratings6 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews14 reviews
Positive64.3%
Neutral7.1%
Negative28.6%

In-app purchases

None

Spacetime Clock

No in-app purchases

None

Floating Clock

No in-app purchases

Questions

Is Spacetime Clock free?
Spacetime Clock is free to download, with no in-app purchases.
Is Floating Clock free?
Floating Clock costs $5.99, with no in-app purchases.
Which has better reviews, Spacetime Clock or Floating Clock?
Floating Clock is rated higher. Spacetime Clock averages 2.8 out of 5 from 4 ratings, while Floating Clock averages 5.0 from 6 ratings.
Do Spacetime Clock or Floating Clock have ads?
Floating Clock shows ads; Spacetime Clock does not.
Which is updated more often, Spacetime Clock or Floating Clock?
Spacetime Clock ships an update every 2 months, and Floating Clock every 6 months. Most recently, Spacetime Clock was updated on October 14, 2026 and Floating Clock on October 9, 2026.

Other comparisons