Comparison

Great Circle Tool vs iRandomer

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

Head to head
About

Great Circle Tool

Calculate the shortest distance between two points on Earth's surface. Ideal for pilots, it estimates flight times based on aircraft speed. A valuable planning utility for aviation professionals.

Highlights
  • Great circle distance calculation
  • Airport to airport distance
  • Flight time estimation
  • Aircraft speed input
  • Pilot planning tool
Features
Read full description

This is an app to quickly measure the great circle distance between two points or airports around the globe. It is a great tool for pilots who can add the aircraft speed and get an estimate of the flight time as well. A must have planning tool for all pilots!

About

iRandomer

Generate random numbers for various purposes like selecting winners or creating teams. Features include customizable ranges, duplicate settings, and iCloud saving. Supports dark mode and secure access with Face ID/Passcode.

Highlights
  • Customizable number ranges
  • Duplicate number control
  • Infinite number generation option
  • iCloud data saving
  • CSV and JSON export
  • Dark mode support
  • Face ID/Passcode protection
Features
Read full description

This is an app that generates random numbers. It can be used for various purposes, such as generating random combinations, selecting winners for events, or creating random teams. The main feature of this app is its intuitive and user-friendly design. To generate random numbers, you simply need to set the minimum and maximum values and the number of digits to generate. Selectable generation settings You can choose whether to allow duplicates and whether to generate an infinite number of numbers. Securely save generated results to iCloud The app allows you to save the generated numbers, making it easy to use them later. It includes a data saving function that uses iCloud, so you can save the results and access them from other devices. Support for CSV and JSON output formats You can also copy the generated numbers by long-pressing them, and export them in CSV or JSON format. Dark mode support The app also supports dark mode, which can help prevent eye strain. Password protection with Face ID and Passcode Finally, the app includes a protection feature using Face ID and Passcode.

Screenshots

Great Circle Tool4 screens
iRandomer4 screens

Verdict

The call

The clearest difference is price: iRandomer at Free against Great Circle Tool's $2.99. iRandomer also leads on rating (4.8 vs 2.6). Great Circle Tool's advantage is ads (none vs shown) and update cadence (every 4 days vs every 4 months). On ratings volume, in-app purchases and device support 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

iRandomer is free to download; Great Circle Tool costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

iRandomer holds the better App Store score, 4.8 against 2.6. Both are backed by a comparable volume of ratings — 5 and 5 respectively.

UpkeepUpdate frequency

Great Circle Tool ships an update every 4 days, iRandomer every 4 months. The most recent releases landed on October 7, 2026 and October 10, 2026 respectively.

Scorecard6 real differences · 4 level
Great Circle Tool versus iRandomer: the parameters behind the verdict, then further details
ParameterGreat Circle TooliRandomer
Price$2.99Free — better
Rating2.6 (5 ratings)4.8 (5 ratings) — better
Positive reviews33.3% of reviews—
Number of ratings55
Update frequencyEvery 4 days — betterEvery 4 months
AdsNo — betterYes
In-app purchasesNoNo
MonetizationPaidAd-supported — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS9.3 — better17.0
Further details — not scored
Size11 MB20 MB
Age rating4+4+
DeveloperLearrocket Productions, LLCDaichi Kato

Customer experience

Great Circle Tool

All ratings5 ratings
Positive40.0%
Neutral0.0%
Negative60.0%
Written reviews6 reviews
Positive33.3%
Neutral0.0%
Negative66.7%

iRandomer

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Great Circle Tool

No in-app purchases

None

iRandomer

No in-app purchases

Questions

Is Great Circle Tool free?
Great Circle Tool costs $2.99, with no in-app purchases.
Is iRandomer free?
iRandomer is free to download, with no in-app purchases.
Which has better reviews, Great Circle Tool or iRandomer?
iRandomer is rated higher. Great Circle Tool averages 2.6 out of 5 from 5 ratings, while iRandomer averages 4.8 from 5 ratings.
Do Great Circle Tool or iRandomer have ads?
iRandomer shows ads; Great Circle Tool does not.
Which is updated more often, Great Circle Tool or iRandomer?
Great Circle Tool ships an update every 4 days, and iRandomer every 4 months. Most recently, Great Circle Tool was updated on October 7, 2026 and iRandomer on October 10, 2026.

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