Comparison

SkyChrono vs World Time Map

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

Head to head
About

SkyChrono

Features
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SkyChrono is a real-time astronomical dashboard for anyone who plans around the sky—astronomers, astrophotographers, navigators, and curious stargazers. SUN • Live altitude & azimuth • Sunrise, sunset, and solar noon • Civil / nautical / astronomical twilight • Current lighting state (day, twilight, night) + day length MOON • Current phase with illumination % • Moonrise & moonset • Live altitude & azimuth • Phase progression at a glance TIME SYSTEMS • Local time + timezone • UTC • Julian Date (JD) / Modified Julian Date (MJD) • Greenwich Mean Sidereal Time (GMST) • Local Sidereal Time (LST) LOCATION • Automatic GPS position (optional) • Manual coordinates anywhere on Earth • Decimal degrees or DMS input ALERTS & NIGHT MODE • Notifications for sunrise/sunset, twilight boundaries, golden hour, and major moon phases • Night Vision mode (red theme) to preserve dark adaptation EXPORT & LEARN • Save the dashboard as a high-resolution image • Export data as JSON, or copy any value with a tap • Built-in explanations for key astronomy concepts PRIVACY FIRST • No ads, no subscriptions • No tracking—your location stays on device • Manual location mode for complete control SkyChrono helps you pick the right moment—whether you’re planning a shoot, observing, or learning celestial mechanics.

About

World Time Map

Features
Read full description

Compare world times fast, check local time abroad, and avoid DST or date-change mistakes with a clear world clock built for travel, overseas contact, and everyday international use. Best for - Checking local time before travel, messages, or calls - Comparing cities and dates at a glance - Finding the right contact window for friends, family, and global teams What you can do - Add cities and compare live local times in one list - See time differences from your base city at a glance - Set a reference date and time to preview local time anywhere - Reorder and remove cities to keep your list focused Why people use it - Faster than searching each city one by one - Easier to avoid DST and date-shift mistakes - Simple enough for daily use without extra setup Download WorldTimeMap to compare city times clearly and stay in sync across time zones.

Screenshots

SkyChrono4 screens
World Time Map4 screens

Verdict

The call

The clearest difference is ads: SkyChrono at none against World Time Map's shown. On price, in-app purchases, 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

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Scorecard1 real difference · 5 level
SkyChrono versus World Time Map: the parameters behind the verdict, then further details
ParameterSkyChronoWorld Time Map
PriceFreeFree
Update frequency—Every 2 months
AdsNo — betterYes
In-app purchasesNoNo
DevicesiPhoneiPhone
Requires iOS18.017.0 — better
Further details — not scored
Size1 MB63 MB
Age rating4+4+
DeveloperBian Dhoan KwikYOSHIKI OSHIMA

In-app purchases

None

SkyChrono

No in-app purchases

None

World Time Map

No in-app purchases

Questions

Is SkyChrono free?
SkyChrono is free to download, with no in-app purchases.
Is World Time Map free?
World Time Map is free to download, with no in-app purchases.
Do SkyChrono or World Time Map have ads?
World Time Map shows ads; SkyChrono does not.

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