Comparison

Units App vs Eclipse Explorer Plus

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

Head to head
About

Units App

Easily convert between various units across multiple categories including length, temperature, and weight. Access past conversions through a history list and send calculations via email. Supports a wide range of Apple devices.

Highlights
  • Multiple unit categories
  • Metric and imperial systems
  • Conversion history
  • Send calculations via email
  • iPad multitasking support
Features
Read full description

Convert between many units from several categories and different unit systems (metric, imperial, ...). Features: - categories: length, temperature, capacity, weight, energy, power, pressure, area - access previous conversions from the history list - categories have different colors (in the history as well) - flip units - send calculations by email - support for the iPhone 6 and 6+ - support for the iPad multitasking (split view..)

About

Eclipse Explorer Plus

Track upcoming solar eclipses with detailed circumstances, countdown timers, and real-time shadow maps. Uses your GPS to provide personalized eclipse data for your exact location.

Highlights
  • Solar eclipse tracking until 2100
  • Real-time shadow maps
  • Countdown timers
  • Location-specific circumstances
  • GPS integration for personalized data
  • Globe display for eclipse path
Features
Read full description

Be ready for the solar eclipses of 2027, and 2028 and for all solar eclipses until 2100! Where will the solar eclipse be? What will you see, when will you see it? The answers are provided here. The app will provide real time data on the day of the eclipse! **** WARNING **** NEVER LOOK AT THE SUN AT ANY TIME WITHOUT PROPER AND CERTIFIED EYE PROTECTION! EYE DAMAGE WILL RESULT IF YOU LOOK AT THE SUN AT ANY TIME (DURING THE ECLIPSE OR NOT) WITHOUT EYE PROTECTION. THIS APP NEVER PROVIDES A TIME THE SUN WILL BE SAFE TO LOOK AT. **** WARNING **** This simple app tracks the next solar eclipse visible to you or for any desired location on Earth. Provides countdown timers, visibility circumstances, and a map of the solar eclipse on Earth. Track the movement of the Moon and it's shadow across the Earth in realtime on the day of the eclipse. Use your device's GPS to calculate the circumstances of the Eclipse for you exact location. In case of clouds, be ready to move on the day of the Eclipse. Be sure of what you will see. PERMISSIONS: GPS: To track your location on a map to see your position relative to the location of the Moon's shadow on Earth. Uses your GPS location to calculate the timings of the eclipse at your location. Location data never leaves your device. PRIVACY: No data is collected or used while using this app. I do not have a way of collecting or storing it. Updates v4.6.0 Added: Map now displays as a globe. Improved: Map display engine more efficient and performant. Improved: Eclipse list display performance. Changed: Now using MapLibre GL JS for map display. Changed: Map data providers Fixed: Long press on map to change desired location more reliable. Fixed: Next eclipse in catalog time buffer math. Fixed: Eclipse list display scrolling. v4.5.1 Fixed: Eclipse list catalog choice bugs. Fixed: Layer button fires when not clicked. Fixed: Layer selector now disappears after all selections. Improved: Eclipse list catalog sorting choice buttons, logic, and user prompts. Improved: Added eclipse status bar icon and button prompt. Improved: UI positioning for different devices. v4.5.0 Complete code re-write for drawing eclipse lines and shadows. Eclipse line boundaries are more accurate and display for all solar eclipses now, even near the poles! Penumbra, antumbral, and umbral shadows now always display and display properly near the poles. The backwards total solar eclipse of 2026 now displays! Still some minor issues with lines drawn near the poles, but it is close. Shadow movement and drawing is much faster. Numerous bug fixes. Numerous memory leaks fixed. v4.0.6 Added: Corona display in simulation during totality. Fixed: Memory leak and duplicate shadow drawing in certain situations. Fixed: Eclipse circumstances displayed wrong duration for certain eclipses Fixed: Eclipse circumstances displayed in wrong sequence for certain eclipses. Improved: Clicking on search box in map mode v4.0.4 Fixed meters and feet elevation display issue. Fixed Eclipse Title Display when map page opens initially. Fixed loading error, no longer wait for elevation data. 4.0.3 Updated app libraries and built with latest build tools. Fixed App crash and hang when calculating some eclipse maps. More eclipse lines drawn in polar adjacent solar eclipses. More eclipse shadows in polar adjacent solar eclipses. 4.0.2: - Fixed: Warning Dialog no longer overlays location request dialog. - Fixed: Lunar shadow drawing displays properly when switching eclipses - Fixed: Help link in About dialog now properly links to help website. 4.0.1 Initial release to iOS. - Fixed: Scrolling issue on circumstance page - Improved: GPS initialization. - Fixed: Long press event did not alway fire on map page. - Fixed: Magnitude not displayed properly. - Fixed: Coverage information is now correct. - Fixed: Switching locations did not always move map. 4.0.0 Initial release Complete code rewrite from previous version.

Screenshots

Units App4 screens
Eclipse Explorer Plus4 screens

Verdict

The call

The clearest difference is rating: Eclipse Explorer Plus at 5.0 against Units App's 2.0. Eclipse Explorer Plus also leads on update cadence (weekly vs every 9 months). Units App's advantage is price ($0.99 vs $1.99) and iOS requirement (12.0 vs 18.6). On ratings volume, ads, in-app purchases and monetization model 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

Units App costs $0.99 and Eclipse Explorer Plus $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Eclipse Explorer Plus holds the better App Store score, 5.0 against 2.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

UpkeepUpdate frequency

Units App ships an update every 9 months, Eclipse Explorer Plus weekly. The most recent releases landed on October 1, 2026 and September 30, 2026 respectively.

Scorecard4 real differences · 6 level
Units App versus Eclipse Explorer Plus: the parameters behind the verdict, then further details
ParameterUnits AppEclipse Explorer Plus
Price$0.99 — better$1.99
Rating2.0 (1 ratings)5.0 (1 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings11
Update frequencyEvery 9 monthsWeekly — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.0 — better18.6
Further details — not scored
Size2 MB46 MB
Age rating4+4+
DeveloperPiet JonasJoshua Berlin

Customer experience

Units App

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%

Eclipse Explorer Plus

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Units App

No in-app purchases

None

Eclipse Explorer Plus

No in-app purchases

Questions

Is Units App free?
Units App costs $0.99, with no in-app purchases.
Is Eclipse Explorer Plus free?
Eclipse Explorer Plus costs $1.99, with no in-app purchases.
Which has better reviews, Units App or Eclipse Explorer Plus?
Eclipse Explorer Plus is rated higher. Units App averages 2.0 out of 5 from 1 ratings, while Eclipse Explorer Plus averages 5.0 from 1 ratings.
Do Units App or Eclipse Explorer Plus have ads?
Neither Units App nor Eclipse Explorer Plus shows ads.
Which is updated more often, Units App or Eclipse Explorer Plus?
Units App ships an update every 9 months, and Eclipse Explorer Plus weekly. Most recently, Units App was updated on October 1, 2026 and Eclipse Explorer Plus on September 30, 2026.

Other comparisons