Fluid Mechanics Calc vs ODE Solver +
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 130+ fluid mechanics formulas
- 360+ calculation methods
- Unit system conversion (metric/US)
- Favorite formula marking
- High mathematical precision
- Seamless unit switching
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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!
ODE Solver +
This utility app calculates ordinary differential equations using the Runge-Kutta method. It offers a step width of 0.01 for its calculations.
- Ordinary differential equation calculation
- Runge-Kutta method
- Step width 0.01
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It is calculated using Runge-Kutta method (step width 0.01).
Screenshots
Verdict
The clearest difference is rating: Fluid Mechanics Calc at 5.0 against ODE Solver +'s 4.0. Fluid Mechanics Calc also leads on ads (none vs shown) and monetization model (free vs ad-supported). ODE Solver +'s advantage is update cadence (weekly vs every 22 months). On price, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Fluid Mechanics Calc holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 3 and 4 respectively.
Fluid Mechanics Calc ships an update every 22 months, ODE Solver + weekly. The most recent releases landed on October 12, 2026 and October 24, 2026 respectively.
| Parameter | Fluid Mechanics Calc | ODE Solver + |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) — better | 4.0 (4 ratings) |
| Number of ratings | 3 | 4 — better |
| Update frequency | Every 22 months | Weekly — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.6 | 14.0 — better |
| Further details — not scored | ||
| Size | 108 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | Trelleborg Sealing Solutions | Takahiko Nakade |
Customer experience
Fluid Mechanics Calc
ODE Solver +
In-app purchases
Fluid Mechanics Calc
No in-app purchases
ODE Solver +
No in-app purchases
Questions
Is Fluid Mechanics Calc free?
Is ODE Solver + free?
Which has better reviews, Fluid Mechanics Calc or ODE Solver +?
Do Fluid Mechanics Calc or ODE Solver + have ads?
Which is updated more often, Fluid Mechanics Calc or ODE Solver +?
Other comparisons
