Comparison

Julian Date vs Savvy Time

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

Head to head
About

Julian Date

Convert between standard calendar dates and Julian dates. Supports 5-digit and full Julian date formats, including time. Also allows conversion from Julian dates back to calendar dates.

Highlights
  • 5 Digit Julian Date conversion
  • Full Julian Date conversion
  • Calendar Date to Julian Date
  • Julian Date to Calendar Date
  • Includes time in full conversion
Features
Read full description

In 5 Digit mode select a Date and receive back the 5 Digit Julian Date, i.e. June 29th, 2017, would be 17180. (17) being the year 2017 and (180) being the 180th day in 2017. Purchase the Full Julian Date mode and June 29th, 2017 12:17:54 PM would be 2457934.01243. You also are able to get the Calendar Date from the Julian Date.

About

Savvy Time

Effortlessly schedule across different time zones. Add multiple cities and see instant local times for any event, eliminating manual calculations. Features automatic daylight saving adjustments for accurate planning.

Highlights
  • Instant multi-city time conversion
  • Automatic daylight saving adjustments
  • Supports over 100,000 cities
  • Real-time updates as you type
  • Clean and reliable interface
Features
Read full description

Compare times across cities and time zones, plan meetings, and keep the places you care about close at hand. • Add cities and time zones, then change a date or time to see the corresponding times everywhere. • Search 24,000+ places, with or without accents, or find a time zone by name or GMT offset. • Best time: in Working Hours view, see the hours that work for the most places, then tap to move every clock there. • Plan around daylight saving changes with automatic time-zone calculations. • See upcoming clock changes for your saved places on Home. • Choose Compact or Standard layouts and pick what each place shows in Place Details. • Add One Place and Compare Places widgets to your Home Screen. One Place can show a Daylight or Working Hours track. On supported iPhones with iOS 27, a full-page Compare Places widget can show a track for each place. • Add world clocks to your Lock Screen: One Place line and circle widgets are free; the rectangular Compare Places widget for up to three places requires Pro. • Share a time comparison or add it to your calendar, and open supported Savvy Time comparison links in the app. • Use light, dark, or system appearance. • Send feedback from Settings with an optional screenshot. Savvy Time needs no account, and comparing times works offline. Free users can save four places. Existing saved places are preserved when updating and are included in iPhone and iPad backups. One Place widgets and small Compare Places widgets are free. Savvy Time Pro adds unlimited saved places, medium and large Compare Places widgets, the full-page Compare Places widget on supported iPhones with iOS 27, and an ad-free experience. Existing Ad-Free subscribers receive Pro access. New installations also receive a three-day ad-free welcome, which is separate from a subscription trial. Optional subscriptions Monthly subscriptions are billed immediately and have no free trial. Annual subscriptions offer a seven-day free trial for eligible customers; otherwise payment is charged when you subscribe. Localized prices, trial eligibility, and renewal terms are displayed before purchase. Subscriptions renew automatically unless canceled through your Apple account. Manage or cancel your subscription in Settings, and use Restore Purchases to restore eligible access. Lifetime Pro Where offered, Lifetime Pro unlocks the same iOS Pro benefits with one payment and no subscription or trial. Verified lifetime access works indefinitely offline. Restore using the Apple account that made the purchase. Refunds or revocations are applied on the next successful verification. Lifetime Pro does not cancel any separate subscription. Availability varies; the App Store shows your localized price before purchase. Terms of Use: https://savvytime.com/terms Privacy Policy: https://savvytime.com/privacy

Screenshots

Julian Date3 screens
Savvy Time4 screens

Verdict

The call

The clearest difference is monetization model: Savvy Time at free against Julian Date's paid. Julian Date's advantage is ratings volume (2.7K vs 537) and iOS requirement (11.1 vs 17.0). On price, rating, review sentiment and in-app purchases 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. Julian Date sells 1 one-off in-app purchase and Savvy Time sells 4 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.8 for Julian Date against 4.9 for Savvy Time. That said, the two scores are not equally well evidenced: Julian Date has 2.7K ratings behind it against 537, so its average is the more settled of the two. Written reviews are what separate them: 77% of Julian Date's written reviews are positive against 78% of Savvy Time's.

Scorecard3 real differences · 7 level
Julian Date versus Savvy Time: the parameters behind the verdict, then further details
ParameterJulian DateSavvy Time
PriceFreeFree
Rating4.8 (2.7K ratings)4.9 (537 ratings) — better
Positive reviews76.7% of reviews77.8% of reviews — better
Number of ratings2.7K — better537
Update frequency—Every 9 days
Ads—Yes
In-app purchasesYesYes
MonetizationPaidFree — better
DevicesiPhone, iPodiPhone, iPad
Requires iOS11.1 — better17.0
Further details — not scored
Size11 MB50 MB
Age rating4+4+
DeveloperJevon CharlesSavvy Time LLC

Customer experience

Julian Date

All ratings2,512 ratings
Positive95.8%
Neutral2.5%
Negative1.7%
Written reviews43 reviews
Positive76.7%
Neutral9.3%
Negative14.0%

Savvy Time

All ratings535 ratings
Positive97.4%
Neutral1.3%
Negative1.3%
Written reviews45 reviews
Positive77.8%
Neutral4.4%
Negative17.8%

User reviews

Julian Date

From 2.7K App Store ratings

What we love

  • 🚀 Best Julian Date App
  • 👍 Great
  • 👍 Love this APP
  • 👍 Military
  • 👍 wonderful

Room to improve

  • 🤔 Could be improved
  • 🤔 Good but...
  • 🤔 Good app
  • 🤔 Need to make it so you can use on i-watch
  • 🤔 Just an idea

Savvy Time

From 537 App Store ratings

What we love

  • 👍 Clean and simple user interface
  • 💰 Free with no ads (historically)
  • 🌍 Comprehensive timezone coverage
  • 🎨 Color-coded daylight hours visualization
  • 🔄 Easy to customize and reorder timezones

Room to improve

  • 📢 Recently added ads (major user dissatisfaction)
  • 🐛 Timezone calculation errors
  • 🔒 Stuck on incorrect timezone (BST issue)
  • ⚠️ Unreliable time accuracy for critical use
  • 📜 Requires manual 'current time' selection

Bugs and requests

Julian Date

Reported bugs

2 issues
  • The year 2000 is incorrect. It is NOT a leap year.
  • Entering 08204 and getting a January 24, 2008 date.

Requested features

3 requests
  • Apple Watch?
  • Add days to the Julian calendar to determine actual dates
  • Make it compatible for my watch

Savvy Time

Reported bugs

4 issues
  • Incorrect timezone offset calculations
  • App stuck on BST with no update option
  • PDT timezone showing wrong time
  • Daylight saving time transitions not handled correctly

Requested features

4 requests
  • Widget option for quick access
  • Auto-sync with device time
  • Ability to display more timezones without scrolling
  • Premium paid option for additional functionality

In-app purchases

1 purchases

Julian Date

One-time1
  • Full Julian Date$1.99
4 purchases

Savvy Time

Subscriptions3
  • Pro Monthly (Legacy)7 Days trial$1.991 Month
  • Savvy Time Pro Monthly$1.991 Month
  • Savvy Time Pro Annual7 Days trial$9.991 Year
One-time1
  • Lifetime Pro$34.99

Questions

Is Julian Date free?
Julian Date is free to download, with in-app purchases available.
Is Savvy Time free?
Savvy Time is free to download, with in-app purchases available.
Which has better reviews, Julian Date or Savvy Time?
Savvy Time is rated higher. Julian Date averages 4.8 out of 5 from 2.7K ratings, while Savvy Time averages 4.9 from 537 ratings.

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