Comparison

Radius Maps vs Fluid Mechanics Calc

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

Head to head
About

Radius Maps

Visualize and manage location-based radii on maps. This tool helps in planning travel, retail expansion, property searches, or understanding potential proximity. It allows for combining multiple coverage areas and managing important locations with a privacy-first approach.

Highlights
  • Visualize radius coverage from a location
  • Combine multiple coverage areas
  • Manage important locations
  • Privacy-first policy for data syncing
  • Location planning and exploration
Read full description

Radius helps you to explore the radius of locations that matter to you. Maybe: You are planning a travel aboard for your long-deserved vacation. You are in charge of open several new retailing stores in a city. You are buying a new property but hesitate between several possibilities. You are just wondering about a Tinder match’s possible location. ;-) … With Radius Maps, you can: - Visualize the radius coverage from a location on your maps. - Combine multiple coverage to make the display more meaningful. - Manage all the locations that matter to you in one place. - Automatically project syncing with privacy first policy. … We believe that Radius can be especially helpful for those who care about personal privacy, and wish to stay informed while explore. You can visit website for more information about Radius Terms of Use: https://www.truewhoo.com/radius-maps/#terms

About

Fluid Mechanics Calc

This utility app provides a comprehensive calculator for fluid mechanics, civil, and structural engineering parameters. It offers over 130 formulas and 360 calculation methods, supporting seamless unit system switching for analysis, design, and operation of fluid-related systems.

Highlights
  • 130+ fluid mechanics formulas
  • 360+ calculation methods
  • Unit system conversion (metric/US)
  • Favorite formula marking
  • High mathematical precision
  • Seamless unit switching
Features
Read full description

The app is useful for the fluid thinkers. This app covers a wide variety of topics and helps in analysis, design, maintenance and operation of fluid related systems. The calculator will provide results for different fluid mechanics, civil, structural, pipe flow and engineering parameters. It is useful in the fields of automotive, aviation, geology, space, biological applications, petroleum, marine systems and cylinder manufacturing. This app comes handy to students, engineers, analysts, researchers and the curious. Here are the useful features of this app LISTS 130+ FORMULAE Memorizing hundreds of formula is not the way to go when it comes to learning fluid mechanics 360+ METHODS OF CALCULATION This calculator allows a user to change subject of formula based on the variable he/she wants to calculate. The formula applied is displayed in the app CALCULATE FOR ANSWERS Key in the numbers, set units and see results. Switch upto three conversion units. The app accepts input and provides results to the highest mathematical precision MARK FAVORITES Easy markups for easy recall HOP SEAMLESSLY BETWEEN BETWEEN METRIC AND US (INCH) UNIT SYSTEMS The app maintains separate functioning of these unit systems. The app has a predefined library of units designated to each of them It would be a good idea to kill the app and re-open it once in a while with the internet. We constantly strive to update, increase and enrich the content of the app. Go fluid with this app in your pocket!

Screenshots

Radius Maps4 screens
Fluid Mechanics Calc4 screens

Verdict

The call

The clearest difference is rating: Fluid Mechanics Calc at 5.0 against Radius Maps's 2.2. Fluid Mechanics Calc also leads on in-app purchases (none vs 1). Radius Maps's advantage is update cadence (every 3 months vs every 22 months) and iOS requirement (9.3 vs 15.6). On price, ratings volume, ads 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

Both are free to download. Radius Maps sells 1 in-app purchase, starting at $4.99 per month. Fluid Mechanics Calc asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Fluid Mechanics Calc holds the better App Store score, 5.0 against 2.2. Both are backed by a comparable volume of ratings — 6 and 3 respectively.

UpkeepUpdate frequency

Radius Maps ships an update every 3 months, Fluid Mechanics Calc every 22 months. The most recent releases landed on October 24, 2026 and October 12, 2026 respectively.

Scorecard5 real differences · 5 level
Radius Maps versus Fluid Mechanics Calc: the parameters behind the verdict, then further details
ParameterRadius MapsFluid Mechanics Calc
PriceFreeFree
Rating2.2 (6 ratings)5.0 (3 ratings) — better
Positive reviews25.0% of reviews—
Number of ratings6 — better3
Update frequencyEvery 3 months — betterEvery 22 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemiumFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS9.3 — better15.6
Further details — not scored
Size29 MB108 MB
Age rating4+4+
DeveloperTruewhoo Network TechnologyTrelleborg Sealing Solutions

Customer experience

Radius Maps

All ratings6 ratings
Positive33.3%
Neutral0.0%
Negative66.7%
Written reviews4 reviews
Positive25.0%
Neutral25.0%
Negative50.0%

Fluid Mechanics Calc

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

Radius Maps

Subscriptions1
  • Radius - All Access3 Days trial$4.991 Month
None

Fluid Mechanics Calc

No in-app purchases

Questions

Is Radius Maps free?
Radius Maps is free to download, with in-app purchases available.
Is Fluid Mechanics Calc free?
Fluid Mechanics Calc is free to download, with no in-app purchases.
Which has better reviews, Radius Maps or Fluid Mechanics Calc?
Fluid Mechanics Calc is rated higher. Radius Maps averages 2.2 out of 5 from 6 ratings, while Fluid Mechanics Calc averages 5.0 from 3 ratings.
Do Radius Maps or Fluid Mechanics Calc have ads?
Neither Radius Maps nor Fluid Mechanics Calc shows ads.
Which is updated more often, Radius Maps or Fluid Mechanics Calc?
Radius Maps ships an update every 3 months, and Fluid Mechanics Calc every 22 months. Most recently, Radius Maps was updated on October 24, 2026 and Fluid Mechanics Calc on October 12, 2026.

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