# Scientific CalcX vs SmartCalc+ Science Calculator

The clearest difference is price: SmartCalc+ Science Calculator at Free against Scientific CalcX's $1.99. SmartCalc+ Science Calculator also leads on update cadence (every 5 weeks vs every 8 months). Scientific CalcX's advantage is ads (none vs shown). On in-app purchases, device support and iOS requirement there is nothing between them.

SmartCalc+ Science Calculator is free to download; Scientific CalcX costs $1.99 up front. Scientific CalcX sells 1 one-off in-app purchase and SmartCalc+ Science Calculator sells 2 in-app purchases, starting at $0.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Scientific CalcX ships an update every 8 months, SmartCalc+ Science Calculator every 5 weeks. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Scientific CalcX | SmartCalc+ Science Calculator |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 8 months | **Every 5 weeks** |
| Size | 2 MB | 9 MB |
| Requires iOS | **16.0** | 16.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Hangzhou Lake Snow Technology Co., Ltd.](https://appshunter.io/developer/1439688130) | [Retenica SP Z.O.O](https://appshunter.io/developer/1715674718) |

## What reviewers say

### Scientific CalcX

[App page](https://appshunter.io/ios/app/scientific-calcx/id1439688401)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Scientific CalcX Premium | $3.99 | one-time |


### SmartCalc+ Science Calculator

[App page](https://appshunter.io/ios/app/smartcalc-plus-science-calculator/id6483847331)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium Access | $0.99 | per 7 days |
| Annual Premium Access | $9.99 | per year |


## Frequently asked questions

### Is Scientific CalcX free?

Scientific CalcX costs $1.99, and also offers in-app purchases.

### Is SmartCalc+ Science Calculator free?

SmartCalc+ Science Calculator is free to download, with in-app purchases available.

### Do Scientific CalcX or SmartCalc+ Science Calculator have ads?

SmartCalc+ Science Calculator shows ads; Scientific CalcX does not.

### Which is updated more often, Scientific CalcX or SmartCalc+ Science Calculator?

Scientific CalcX ships an update every 8 months, and SmartCalc+ Science Calculator every 5 weeks. Most recently, Scientific CalcX was updated on October 29, 2026 and SmartCalc+ Science Calculator on October 24, 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.*