Comparison

Eclipse Nav vs Great Circle Miles Calculator

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

Head to head
About

Eclipse Nav

Read full description

Plan your eclipse viewing experience with real-time cloud cover forecasts, precise path of totality mapping, and multi-language support. Get accurate navigation to the path of totality. Maximize your chances of being in the path of totality under clear skies! Choose between different NOAA, Canadian, and European weather models. View long-range cloud cover forecasts up to 5 days in advance! As the eclipse draws closer, get high-resolution cloud forecasts updated hourly and satellite cloud cover images updated every 5 minutes! If you're already traveling to view the eclipse, wouldn't you want to maximize your chance of seeing totality? Find the closest location in the path of totality with the best chance of cloud-free skies. Find optimal viewing locations under clear skies! Maximize your chances of being in the path of totality with clear skies. View eclipse track paths. Get precise start and end times of all eclipse phases for any location. Find the duration of totality at any location. Find the distance to the centerline of your viewing location. Check current and forecast cloud cover. View predicted cloud coverage based on US, Canadian, and European models - up to 5 days in advance! Not sure which cloud model to use? Our “Automatic Cloud Model” feature picks the most optimal one as the event gets closer. Cloud cover forecasts updated hourly; current satellite cloud cover images updated every 5 minutes. All total, annular, and hybrid eclipses from 2017 to 2050 are supported! Choose between English, Spanish, French, German, or Chinese.

About

Great Circle Miles Calculator

Calculate exact flight distances between any two airports globally. Visualize routes on an interactive map, perfect for frequent flyers tracking loyalty program miles. The app works offline, allowing calculations anywhere.

Highlights
  • Global airport search
  • Real flight path visualization
  • Precise distance measurement
  • Offline functionality
  • Loyalty program mile tracking
Read full description

Planning your next adventure? Great Circle gives you the exact flight distances between any two airports worldwide, beautifully displayed on an interactive map. Perfect for frequent flyers tracking their loyalty program miles! Key Features: • Global Airport Search - Find any airport from major hubs to regional destinations • Real Flight Paths - See the actual curved route planes take around our globe • Precise Distance Measurement - Get exact mile counts for your journey • Works Without Internet - Calculate distances anywhere, even while flying • Mile Collector's Dream - Ideal for maximizing your airline rewards programs

Screenshots

Eclipse Nav4 screens
Great Circle Miles Calculator4 screens

Verdict

The call

The clearest difference is iOS requirement: Eclipse Nav at 17.6 against Great Circle Miles Calculator's 26.0. On price, update cadence, ads 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on September 28, 2026 and October 4, 2026 respectively.

Scorecard1 real difference · 8 level
Eclipse Nav versus Great Circle Miles Calculator: the parameters behind the verdict, then further details
ParameterEclipse NavGreat Circle Miles Calculator
PriceFreeFree
Rating—4.6 (8 ratings) — better
Number of ratings—8 — better
Update frequencyWeeklyWeekly
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPad — betteriPhone
Requires iOS17.6 — better26.0
Further details — not scored
Size32 MB7 MB
Age rating4+4+
DeveloperDoug PedrickChristian Mortensen

In-app purchases

None

Eclipse Nav

No in-app purchases

None

Great Circle Miles Calculator

No in-app purchases

Questions

Is Eclipse Nav free?
Eclipse Nav is free to download, with no in-app purchases.
Is Great Circle Miles Calculator free?
Great Circle Miles Calculator is free to download, with no in-app purchases.
Do Eclipse Nav or Great Circle Miles Calculator have ads?
Neither Eclipse Nav nor Great Circle Miles Calculator shows ads.
Which is updated more often, Eclipse Nav or Great Circle Miles Calculator?
Eclipse Nav ships an update weekly, and Great Circle Miles Calculator weekly. Most recently, Eclipse Nav was updated on September 28, 2026 and Great Circle Miles Calculator on October 4, 2026.

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