Comparison

DecimalClock vs Polaris

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

Head to head
About

DecimalClock

Features
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DecimalClock is more than a clock – it’s an idea that challenges routine. Experience a day divided into 10 hours, 100 minutes per hour, and 100 seconds per minute. It blends classic and decimal time in one calm, minimalist space where design meets precision. β€’ Classic and decimal time modes β€’ Full-screen mode for both analog and digital clocks β€’ Converter between classic and decimal time β€’ Customizable colors and fonts β€’ Works offline – no ads, no distractions β€’ Optimized for iPad β€’ Educational tool for schools and curious minds In 1793, France introduced decimal time as a bold experiment. Now, it returns – reimagined for today, in the palm of your hand.

About

Polaris

Features
Read full description

Polaris turns the night sky as it actually looks from where you are into a living Home Screen widget β€” a quiet planetarium clock. β–  A real sky It plots ~9,000 stars from the Yale Bright Star Catalog, computed from your chosen city's latitude, longitude and sidereal time, so what's rising and where is faithful to the real sky right now. Star brightness and color (blue-white to orange) are true to life. No location permission needed β€” just pick a city. β–  Clock & calendar Layer an analog clock (10 frames Γ— 5 hands Γ— date fonts) or a digital clock (8 typefaces) over the stars. A monthly calendar and a corner date/weekday are available too. β–  More of the sky β€’ Shooting stars streak by now and then β€’ Star names label the bright ones β€” Sirius, Vega, and more β€’ Constellation lines connect figures like Orion and the Big Dipper β–  Widgets Small, medium, large and extra-large are all supported. Each size saves its own design, so you can compose your Home Screen exactly how you like. There's also a clock-free "sky only" widget. β–  Details β€’ Pure black background β€” quiet and striking on OLED β€’ Switch between English and Japanese inside the app β€’ 39 cities worldwide, plus automatic detection A bedside clock. The centerpiece of your Home Screen. The night sky, always in your hand.

Screenshots

DecimalClock4 screens
Polaris1 screens

Verdict

The call

The clearest difference is price: Polaris at Free against DecimalClock's $2.99. On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Polaris is free to download; DecimalClock costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Scorecard1 real difference Β· 5 level
DecimalClock versus Polaris: the parameters behind the verdict, then further details
ParameterDecimalClockPolaris
Price$2.99Free β€” better
Update frequencyWeeklyβ€”
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.6 β€” better17.0
Further details β€” not scored
Size2 MB6 MB
Age rating4+4+
DeveloperKaspars SopsRyohei Horiuchi

In-app purchases

None

DecimalClock

No in-app purchases

None

Polaris

No in-app purchases

Questions

Is DecimalClock free?
DecimalClock costs $2.99, with no in-app purchases.
Is Polaris free?
Polaris is free to download, with no in-app purchases.
Do DecimalClock or Polaris have ads?
Neither DecimalClock nor Polaris shows ads.

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