# SmartCalc+ Science Calculator vs iBigCalc

The clearest difference is in-app purchases: iBigCalc at none against SmartCalc+ Science Calculator's 2. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. SmartCalc+ Science Calculator sells 2 in-app purchases, starting at $0.99 per 7 days. iBigCalc asks for nothing beyond the download.

SmartCalc+ Science Calculator ships an update every 5 weeks, iBigCalc every 3 weeks. The most recent releases landed on October 2, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | SmartCalc+ Science Calculator | iBigCalc |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 5 weeks | **Every 3 weeks** |
| Size | 9 MB | 5 MB |
| Requires iOS | **16.6** | 17 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Retenica SP Z.O.O](https://appshunter.io/developer/1715674718) | [Manh Phi Nguyen](https://appshunter.io/developer/1461707344) |

## What reviewers say

### 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 |


### iBigCalc

[App page](https://appshunter.io/ios/app/ibigcalc/id6760924865)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SmartCalc+ Science Calculator free?

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

### Is iBigCalc free?

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

### Do SmartCalc+ Science Calculator or iBigCalc have ads?

Both SmartCalc+ Science Calculator and iBigCalc show ads.

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

SmartCalc+ Science Calculator ships an update every 5 weeks, and iBigCalc every 3 weeks. Most recently, SmartCalc+ Science Calculator was updated on October 2, 2026 and iBigCalc on October 16, 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.*