# Scientific Calculator Plus 991 vs MCPLUS

The clearest difference is in-app purchases: MCPLUS at none against Scientific Calculator Plus 991's 4. MCPLUS also leads on ads (none vs shown) and rating (4.9 vs 4.7). Scientific Calculator Plus 991's advantage is ratings volume (13K vs 10). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Scientific Calculator Plus 991 sells 4 in-app purchases, starting at $1.99 per month. MCPLUS asks for nothing beyond the download.

MCPLUS holds the better App Store score, 4.9 against 4.7. That said, the two scores are not equally well evidenced: Scientific Calculator Plus 991 has 13K ratings behind it against 10, so its average is the more settled of the two. Written reviews point the same way: 92% of Scientific Calculator Plus 991's written reviews are positive against 100% of MCPLUS's.

Scientific Calculator Plus 991 ships an update fortnightly, MCPLUS weekly. The most recent releases landed on November 7, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Scientific Calculator Plus 991 | MCPLUS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (13K ratings)](https://appshunter.io/ios/app/scientific-calculator-plus-991/id1449106995/reviews) | **[4.9 (10 ratings)](https://appshunter.io/ios/app/mcplus/id6754678266/reviews)** |
| Number of ratings | **13K** | 10 |
| Positive reviews | 91.7% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Fortnightly | **Weekly** |
| Monetization | **Free with in-app purchases** | Subscription |
| Size | 169 MB | 246 MB |
| Requires iOS | **15** | 15.6 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Tran Duy](https://appshunter.io/developer/1449106994) | [MC CORPORATE CONSULTANT SDN. BHD.](https://appshunter.io/developer/1849594485) |

## What reviewers say

### Scientific Calculator Plus 991

[App page](https://appshunter.io/ios/app/scientific-calculator-plus-991/id1449106995)

This app is a powerful scientific calculator with graphing capabilities, a formula library, and a unit converter. It offers natural display input, advanced math functions for algebra, calculus, and statistics, and supports various number bases and formats.

**Highlights:** Natural display input, Graphing module, Formula library, Unit and currency converter, Algebra and calculus tools, Matrix and vector operations, Statistical calculations

**Features:** Family Sharing, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Calculator month subscription | $1.99 | per month |
| Calculator yearly subscription | $3.99 | per year |
| Calculator Premium | $5.99 | one-time |
| Calculator Pro | $5.99 | one-time |

**What reviewers like**

- 👍 Intuitive and easy to use
- 🚀 Powerful and feature-rich
- 💡 Customizable interface and settings
- 🔍 Extensive library of formulas and equations
- ⚙️ Handles complex math and scientific functions well

**What reviewers complain about**

- 🐛 Occasional bugs and input issues
- 🔀 Confusing layout and button placement
- 💰 Some advanced features locked behind paywall

**Reported bugs**

- Keyboard input stops working after switching screens
- Incorrect calculation results for certain operations
- App crashes on some devices after recent update

**Requested features**

- Add option to change display font and color
- Improve cursor control and editing capabilities
- Implement auto-simplification for complex expressions
- Add more handwriting font options
- Expand graphing and equation solving features


### MCPLUS

[App page](https://appshunter.io/ios/app/mcplus/id6754678266)

Access top-quality online tuition services from home. Choose from various subscription packages, catch up on missed lessons with the replay function, and utilize a comprehensive note bank. Learn from expert tutors tailored to your academic needs.

**Highlights:** Online tuition services, Subscription packages, Replay function for missed classes, Note bank for resources, Expert tutors, Personalized learning

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Scientific Calculator Plus 991 free?

Scientific Calculator Plus 991 is free to download, with in-app purchases available.

### Is MCPLUS free?

MCPLUS is free to download, with no in-app purchases.

### Which has better reviews, Scientific Calculator Plus 991 or MCPLUS?

MCPLUS is rated higher. Scientific Calculator Plus 991 averages 4.7 out of 5 from 13K ratings, while MCPLUS averages 4.9 from 10 ratings.

### Do Scientific Calculator Plus 991 or MCPLUS have ads?

Scientific Calculator Plus 991 shows ads; MCPLUS does not.

### Which is updated more often, Scientific Calculator Plus 991 or MCPLUS?

Scientific Calculator Plus 991 ships an update fortnightly, and MCPLUS weekly. Most recently, Scientific Calculator Plus 991 was updated on November 7, 2026 and MCPLUS on October 30, 2026.

---

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