Comparison

WolframAlpha vs SISO Calculator

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

Head to head
About

WolframAlpha

This app serves as a powerful computational knowledge engine for homework and research. It offers comprehensive support across numerous academic subjects, from math and physics to biology and economics. Unlock advanced features like step-by-step solutions and photo input for a more in-depth learning experience.

Highlights
  • Step-by-step solutions with hints
  • Photo input for math problems
  • Input Assistants for various subjects
  • Thousands of covered domains
  • Homework and exam preparation
Features
Read full description

Get the WolframAlpha app, the ultimate tool for homework and research. Whether you're in high school or college, Wolfram|Alpha is the tool you need to stay ahead of the curve. You can prepare for exams; get help with homework; and learn, explore and test your skills. Famous for math and physics, Wolfram|Alpha is also a whiz at chemistry, biology, engineering, economics, astronomy, statistics and much more. Featuring: • Step-by-step solutions: With hints, intermediate steps and methods of solving • Photo input: You can now use your camera to input math problems • Input Assistants: Our most popular course, reference and professional assistants • Thousands of domains: The most extensive topic coverage available—with more continually added—to get you to answers faster Subscription Details: Become a Wolfram|Alpha Pro member to unlock step-by-step solutions, photo input, Input Assistants and more. Payment will be charged to your iTunes account at confirmation of purchase. Your subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. Subscription fees are $9.99 per month or up to $59.99 per year depending on your plan. You can manage your Wolfram|Alpha Pro subscription by visiting the iTunes Account Settings after purchase. Any unused portion of a free trial period, if offered, will be forfeited when you purchase a Wolfram|Alpha Pro subscription. Privacy policy: https://www.wolfram.com/legal/privacy/wolfram Terms of use: https://www.wolframalpha.com/termsofuse

About

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.

Highlights
  • System Dynamics analysis
  • Controls engineering
  • Intuitive interface
  • Time domain analysis
  • Frequency domain analysis
  • Controller interaction visualization
Features
Read full description

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.

Screenshots

WolframAlpha4 screens
SISO Calculator4 screens

Verdict

The call

The clearest difference is review sentiment: SISO Calculator at 100% against WolframAlpha's 35%. SISO Calculator also leads on rating (5.0 vs 2.8) and in-app purchases (none vs 6). WolframAlpha's advantage is ratings volume (129 vs 3). On price, update cadence, 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. WolframAlpha sells 6 in-app purchases, starting at $9.99 per month. SISO Calculator asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

SISO Calculator holds the better App Store score, 5.0 against 2.8. That said, the two scores are not equally well evidenced: WolframAlpha has 129 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 35% of WolframAlpha's written reviews are positive against 100% of SISO Calculator's.

UpkeepUpdate frequency

WolframAlpha ships an update every 2 months, SISO Calculator every 5 weeks. The most recent releases landed on September 21, 2026 and June 3, 2026 respectively.

Scorecard6 real differences · 4 level
WolframAlpha versus SISO Calculator: the parameters behind the verdict, then further details
ParameterWolframAlphaSISO Calculator
PriceFreeFree
Rating2.8 (129 ratings)5.0 (3 ratings) — better
Positive reviews35.2% of reviews100.0% of reviews — better
Number of ratings129 — better3
Update frequencyEvery 2 monthsEvery 5 weeks — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.614.0 — better
Further details — not scored
Size366 MB4 MB
Age rating9+4+
DeveloperWolfram Group LLCDeft Dynamics LLC

Customer experience

WolframAlpha

All ratings129 ratings
Positive41.1%
Neutral7.0%
Negative51.9%
Written reviews233 reviews
Positive35.2%
Neutral9.4%
Negative55.4%

SISO Calculator

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

WolframAlpha

Reported bugs

4 issues
  • Login screen freezes
  • Incompatible with older devices
  • Search bar issues and crashes
  • Incorrect or incomplete results

Requested features

4 requests
  • Dark mode option
  • Improved handwritten math recognition
  • Better integration with Siri
  • More customization options

SISO Calculator

Not enough reviews yet to summarise bugs or requests.

In-app purchases

6 purchases

WolframAlpha

Subscriptions6
  • Pro Monthly$9.991 Month
  • Pro for Students Monthly$9.991 Month
  • Pro for Educators Monthly$9.991 Month
Show 3 more
  • Pro Yearly$59.991 Year
  • Pro for Students Yearly$59.991 Year
  • Pro for Educators Yearly$59.991 Year
None

SISO Calculator

No in-app purchases

Questions

Is WolframAlpha free?
WolframAlpha is free to download, with in-app purchases available.
Is SISO Calculator free?
SISO Calculator is free to download, with no in-app purchases.
Which has better reviews, WolframAlpha or SISO Calculator?
SISO Calculator is rated higher. WolframAlpha averages 2.8 out of 5 from 129 ratings, while SISO Calculator averages 5.0 from 3 ratings.
Do WolframAlpha or SISO Calculator have ads?
Neither WolframAlpha nor SISO Calculator shows ads.
Which is updated more often, WolframAlpha or SISO Calculator?
WolframAlpha ships an update every 2 months, and SISO Calculator every 5 weeks. Most recently, WolframAlpha was updated on September 21, 2026 and SISO Calculator on June 3, 2026.

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