Comparison

Spacetime Clock vs Waterfall

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

Waterfall

This application displays the current time on your device screen, creating a unique visual effect by simulating a cascading waterfall of numbers. It offers a distinctive way to view the time with its innovative design.

Highlights
  • Waterfall number effect for time display
  • Simulates cascading numbers
  • Displays current device time
  • Unique visual interface
Features
Read full description

The program displays the current time on the device screen, simulating the effect of a waterfall of numbers.

Screenshots

Spacetime Clock4 screens
Waterfall3 screens

Verdict

The call

The clearest difference is price: Spacetime Clock at Free against Waterfall's $0.99. Spacetime Clock also leads on update cadence (every 2 months vs every 4 months). Waterfall's advantage is rating (5.0 vs 2.8) and device support (5 vs 1). On ratings volume, ads, in-app purchases and monetization model 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; Waterfall costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Waterfall holds the better App Store score, 5.0 against 2.8. Both are backed by a comparable volume of ratings — 4 and 2 respectively.

UpkeepUpdate frequency

Spacetime Clock ships an update every 2 months, Waterfall every 4 months. The most recent releases landed on October 14, 2026 and October 7, 2026 respectively.

Scorecard5 real differences · 5 level
Spacetime Clock versus Waterfall: the parameters behind the verdict, then further details
ParameterSpacetime ClockWaterfall
PriceFree — better$0.99
Rating2.8 (4 ratings)5.0 (2 ratings) — better
Positive reviews40.9% of reviews—
Number of ratings4 — better2
Update frequencyEvery 2 months — betterEvery 4 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhoneiPhone, iPad, iPod, Apple TV, Apple Watch — better
Requires iOS16.012.0 — better
Further details — not scored
Size6 MB4 MB
Age rating4+4+
Developery-designKostakov Maxim

Customer experience

Spacetime Clock

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

Waterfall

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Spacetime Clock

No in-app purchases

None

Waterfall

No in-app purchases

Questions

Is Spacetime Clock free?
Spacetime Clock is free to download, with no in-app purchases.
Is Waterfall free?
Waterfall costs $0.99, with no in-app purchases.
Which has better reviews, Spacetime Clock or Waterfall?
Waterfall is rated higher. Spacetime Clock averages 2.8 out of 5 from 4 ratings, while Waterfall averages 5.0 from 2 ratings.
Do Spacetime Clock or Waterfall have ads?
Neither Spacetime Clock nor Waterfall shows ads.
Which is updated more often, Spacetime Clock or Waterfall?
Spacetime Clock ships an update every 2 months, and Waterfall every 4 months. Most recently, Spacetime Clock was updated on October 14, 2026 and Waterfall on October 7, 2026.

Other comparisons