Comparison

PlanetTimer vs Twinkle Clock

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

Head to head
About

PlanetTimer

Customize your timers with cartoon-style planetary themes and fun flying machines. Experience a unique timing process with rotating planets and interactive 3D effects. Track time intervals with simple clicks.

Highlights
  • Cartoon planetary themes
  • Customizable flying machines
  • Rotating planet animations
  • Time tracking by clicks
  • 3D hand tracking effects
  • Multiple planetary patterns
Features
Read full description

Cartoon style timers provide various interesting planetary themes, paired with fun flying machines, making the timing process extremely interesting. Users can freely mix and match different planetary themes and aircraft to experience a unique and novel timing experience. ---Main functions--- 1. With a fun planet as the theme, the planet rotates during the timing process and replaces another planet pattern after a certain period of time 2. Provide up to ten planetary patterns with different theme content, and choose from different character flying machines 3. It supports timing by time. During the timing process, clicking on a planet will result in timing by time, and the interval time and total time points between each click will be recorded 4. Swipe the screen with your fingers to experience 3D hand tracking effect, which is fun and interesting

About

Twinkle Clock

Read full description

Twinkle Clock turns your screen into a night sky — a clock face made of twinkling stars and constellations. FREE • 12 zodiac constellations, swipe to switch • A twinkling starfield with the time overlaid on constellation lines PRO (one-time purchase) • All 88 official constellations • ~8,900 naked-eye stars across the whole sky • The Milky Way and the Moon & planets (Mercury–Saturn) • Nebulae, star clusters, and galaxies • Tap any star, the Moon, or a planet to read about it • Time Travel — pick any date and time to see what the sky looked like (or will look like) • Major meteor shower activity windows Available on iPhone, iPad, Mac, Apple TV, and Apple Vision Pro.

Screenshots

PlanetTimer4 screens
Twinkle Clock4 screens

Verdict

The call

The clearest difference is price: Twinkle Clock at Free against PlanetTimer's $1.99. Twinkle Clock also leads on update cadence (fortnightly vs every 2 months). PlanetTimer's advantage is in-app purchases (none vs 1). On ads, device support 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

Twinkle Clock is free to download; PlanetTimer costs $1.99 up front. Twinkle Clock sells 1 one-off in-app purchase. PlanetTimer asks for nothing beyond the download.

UpkeepUpdate frequency

PlanetTimer ships an update every 2 months, Twinkle Clock fortnightly. The most recent releases landed on August 14, 2026 and August 15, 2026 respectively.

Scorecard3 real differences · 7 level
PlanetTimer versus Twinkle Clock: the parameters behind the verdict, then further details
ParameterPlanetTimerTwinkle Clock
Price$1.99Free — better
Rating5.0 (1 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 2 monthsFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaid—
DevicesiPhone, iPad, Apple WatchiPhone, iPad, Mac, Vision Pro — better
Requires iOS16.0 — better17.0
Further details — not scored
Size43 MB23 MB
Age rating4+4+
Developer仲辉 黄Hiroyasu Hirai

In-app purchases

None

PlanetTimer

No in-app purchases

1 purchases

Twinkle Clock

One-time1
  • Twinkle Clock Pro$24.99

Questions

Is PlanetTimer free?
PlanetTimer costs $1.99, with no in-app purchases.
Is Twinkle Clock free?
Twinkle Clock is free to download, with in-app purchases available.
Do PlanetTimer or Twinkle Clock have ads?
Neither PlanetTimer nor Twinkle Clock shows ads.
Which is updated more often, PlanetTimer or Twinkle Clock?
PlanetTimer ships an update every 2 months, and Twinkle Clock fortnightly. Most recently, PlanetTimer was updated on August 14, 2026 and Twinkle Clock on August 15, 2026.

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