# Brilliant vs SISO Calculator

The clearest difference is in-app purchases: SISO Calculator at none against Brilliant's 19. SISO Calculator also leads on ads (none vs shown) and rating (5.0 vs 4.7). Brilliant's advantage is ratings volume (32K vs 3) and update cadence (weekly vs every 5 weeks). On price and device support there is nothing between them.

Both are free to download. Brilliant sells 16 in-app purchases, starting at $19.99 per month. SISO Calculator asks for nothing beyond the download.

SISO Calculator holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Brilliant has 32K ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 79% of Brilliant's written reviews are positive against 100% of SISO Calculator's.

Brilliant ships an update weekly, SISO Calculator every 5 weeks. The most recent releases landed on September 25, 2026 and June 3, 2026 respectively.

## The numbers

| Metric | Brilliant | SISO Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (32K ratings)](https://appshunter.io/ios/app/brilliant-learn-math-and-coding/id913335252/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/siso-calculator/id1548141101/reviews)** |
| Number of ratings | **32K** | 3 |
| Positive reviews | 79.1% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Weekly** | Every 5 weeks |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#60** | — |
| Size | 107 MB | 4 MB |
| Requires iOS | 17.0 | **14.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Brilliant.org](https://appshunter.io/developer/913335255) | [Deft Dynamics LLC](https://appshunter.io/developer/1288783778) |

## What reviewers say

### Brilliant

[App page](https://appshunter.io/ios/app/brilliant-learn-math-and-coding/id913335252)

**Currently charting:** #60 Top Grossing · Education, #177 Top Free · Education (US App Store)

Master math and computer science through interactive, visual lessons. This app focuses on active problem-solving and personalized practice to build critical thinking and STEM skills. Ideal for students and lifelong learners seeking to deepen their understanding and confidence.

**Highlights:** Interactive problem-solving lessons, Personalized practice sets, Visual explanations of concepts, Expert-crafted STEM courses, Real-time feedback, Builds critical thinking skills

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (16)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Brilliant Premium - Personal stats & exclusive problems | $19.99 | per month |
| Brilliant Premium: Fun, challenging problems in math and science by experts | $24.99 | per month |
| Brilliant Premium | $24.99 | per month |
| Brilliant Premium with Tutor | $30.00 | per month |
| Brilliant Premium: Fun, challenging problems in math and science by experts | $74.99 | per year |
| Brilliant Premium: Fun, challenging problems in math and science by experts | $96.99 | per year |
| Brilliant Premium: Fun, challenging problems in math and science by experts | $111.99 | per year |
| Brilliant Premium | $111.99 | per year |
| Brilliant Premium: Fun, challenging problems in math and science by experts | $119.99 | per year |
| Brilliant Premium | $127.99 | per year |
| Brilliant Premium | $127.99 | per year |
| Brilliant Premium: Fun, challenging problems in math and science by experts | $149.99 | per year |
| Brilliant Premium | $149.99 | per year |
| Brilliant Premium | $159.99 | per year |
| Brilliant Premium with Tutor | $167.99 | per year |
| Brilliant Premium with Tutor | $191.99 | per year |

**What reviewers like**

- 🚀 Quick exercises, fast improvement
- 👍 Engaging and easy learning
- 👍 Effective learning of complex topics
- 👍 Intuitive and challenging but not intimidating
- 👍 Wonderful learning tool

**What reviewers complain about**

- 💰 Expensive subscription
- 🐛 Bugs and glitches
- 🔍 Limited variety of learning methods
- 🔍 Limited course selection
- 🔍 Inconsistent explanations and unclear wording

**Reported bugs**

- Progress not saving correctly
- Explanations not loading properly
- Home page not loading
- Difficulty cancelling subscription

**Requested features**

- Dark mode option
- Offline mode
- Spaced repetition practice
- Ability to bookmark/save difficult problems
- More detailed explanations


### SISO Calculator

[App page](https://appshunter.io/ios/app/siso-calculator/id1548141101)

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:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Brilliant free?

Brilliant 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, Brilliant or SISO Calculator?

SISO Calculator is rated higher. Brilliant averages 4.7 out of 5 from 32K ratings, while SISO Calculator averages 5.0 from 3 ratings.

### Do Brilliant or SISO Calculator have ads?

Brilliant shows ads; SISO Calculator does not.

### Which is updated more often, Brilliant or SISO Calculator?

Brilliant ships an update weekly, and SISO Calculator every 5 weeks. Most recently, Brilliant was updated on September 25, 2026 and SISO Calculator on June 3, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*