Comparison

Touch Fluids vs Rapid Skills Multiplication

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

Head to head
About

Touch Fluids

An educational tool for fluid mechanics courses, featuring basic equations and animations. It covers topics from fluid statics to flow in pipes, suitable for high school and university students. Teachers can use it to present concepts in class.

Highlights
  • Basic fluid mechanics equations
  • Illustrative animations
  • Fluid statics
  • Fluid in motion
  • Continuity and energy equations
  • Flow in pipes
  • Vector operations
Features
Read full description

Touch Fluids is an educative iPhone application in support to an high-school or university course of fluid mechanics. It contains not only a memorandum of the basic equations, but it also contains several animations illustrating the various concepts of fluid mechanics. This application runs also on iPad and iPod Touch. 50 screens of physics! For teachers !! Connect your iPad with a video projector and show the animations to your students in classroom. List of covered subjects: Fluid Statics - Fluid Properties, - Pressure, - Fluid Forces. Fluid in mouvement - Approaches, - Kinematics, - Type of flow - Transport Equation. Continuity Equation - Continuity Equation, - Incompressible and Stationnary flow, - Differential Form, Energy Equation - Fluid Energie, - General Energy Equation. Linear Momentum - Momentum Equation, - Differential Form. Flow in Pipes - Lost Head, - Minor Lost Head. Appendices - Vector Operations - Vector Identities.

About

Rapid Skills Multiplication

Features
Read full description

Dive into our tutorials, assisted problems and endless practice problems to enhance your mental and cognitive abilities. Just practice for a few minutes a day to improve the speed and accuracy of your mental skills producing results faster than a calculator. An unlimited number of timed and assisted challenges are provided from simple multiplication problems to larger three by three digit problems. Each triggering and training different mental skills for just minutes a day. Although the techniques are not complex, we provide an unlimited playground to test and hone these techniques. The key to improving is the practice that we provide.

Screenshots

Touch Fluids4 screens
Rapid Skills Multiplication4 screens

Verdict

The call

The clearest difference is price: Rapid Skills Multiplication at Free against Touch Fluids's $0.99. Rapid Skills Multiplication also leads on update cadence (weekly vs every 13 months) and iOS requirement (15.0 vs 17.2). On ads, 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

Rapid Skills Multiplication is free to download; Touch Fluids costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Touch Fluids ships an update every 13 months, Rapid Skills Multiplication weekly. The most recent releases landed on November 1, 2026 and November 4, 2026 respectively.

Scorecard3 real differences · 7 level
Touch Fluids versus Rapid Skills Multiplication: the parameters behind the verdict, then further details
ParameterTouch FluidsRapid Skills Multiplication
Price$0.99Free — better
Rating5.0 (1 ratings) — better—
Positive reviews60.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 13 monthsWeekly — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.215.0 — better
Further details — not scored
Size15 MB44 MB
Age rating4+4+
DeveloperXavier DaxheletOutdoor Coders

In-app purchases

None

Touch Fluids

No in-app purchases

None

Rapid Skills Multiplication

No in-app purchases

Questions

Is Touch Fluids free?
Touch Fluids costs $0.99, with no in-app purchases.
Is Rapid Skills Multiplication free?
Rapid Skills Multiplication is free to download, with no in-app purchases.
Do Touch Fluids or Rapid Skills Multiplication have ads?
Neither Touch Fluids nor Rapid Skills Multiplication shows ads.
Which is updated more often, Touch Fluids or Rapid Skills Multiplication?
Touch Fluids ships an update every 13 months, and Rapid Skills Multiplication weekly. Most recently, Touch Fluids was updated on November 1, 2026 and Rapid Skills Multiplication on November 4, 2026.

Other comparisons