SISO Calculator vs ODE
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SISO Calculator
This app helps engineers and students understand System Dynamics and Controls. It offers an intuitive interface to quickly analyze controller and plant interactions in both time and frequency domains.
- System Dynamics analysis
- Controls engineering
- Intuitive interface
- Time domain analysis
- Frequency domain analysis
- Controller interaction visualization
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SISO Calculator was built to help practicing engineers and students get an intuitive sense of System Dynamics and Controls. The interface is focused so you can quickly interact with controllers and plants to see immediately how time and frequency interact and how controllers behave.
ODE
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The ODESolverIntegrator is a simple but elegant app to find the integral of ODEs. You can solve (find the integral of) nonlinear ODEs. You can reduce the higher order ODE to a set of first order ODEs. You can solve (find the integral of) linear ODEs in the form of ẋ = Ax + Bu; y = Cx + Du. This app uses Runge-Kutta 4th order algorithm to solve the ODEs. Once the ODEs are solved, a beautiful interactive graph for each ODE's is created that you can share with other or save it locally. The reduced ODE's equations are presented beautifully in the math-equation format. You can compute definite integral (single, double, tripple). It uses the midpoint method. It automatically saves your hard work locally on your device so you can come back and pick up from where you left off as your great effort will not be lost. This app also has a Study page to help you learn important integration rules like, power rule, product rule, ect. This app is perfect for students learning calculus. Sharpen you brain by using this app and learning about the calculus. This is an app for all student groups. From high school to college to university students. Be creative. Enjoy the app!
Screenshots
Verdict
The clearest difference is ads: SISO Calculator at none against ODE's shown. On price, update cadence, 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.
Both ship on a similar rhythm, roughly every 5 weeks. The most recent releases landed on October 20, 2026 and October 25, 2026 respectively.
| Parameter | SISO Calculator | ODE |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 5 weeks | Every 5 weeks |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 4 MB | 41 MB |
| Age rating | 4+ | 4+ |
| Developer | Deft Dynamics | Om Prakash Chapagain |
In-app purchases
SISO Calculator
No in-app purchases
ODE
No in-app purchases
Questions
Is SISO Calculator free?
Is ODE free?
Do SISO Calculator or ODE have ads?
Which is updated more often, SISO Calculator or ODE?
Other comparisons
