# sci.calculator vs ec Fast Calc

The clearest difference is in-app purchases: ec Fast Calc at none against sci.calculator's 1. ec Fast Calc also leads on update cadence (weekly vs every 5 weeks). sci.calculator's advantage is ads (none vs shown) and iOS requirement (15.0 vs 17). On price and device support there is nothing between them.

Both are free to download. sci.calculator sells 1 one-off in-app purchase. ec Fast Calc asks for nothing beyond the download.

sci.calculator ships an update every 5 weeks, ec Fast Calc weekly. The most recent releases landed on October 27, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | sci.calculator | ec Fast Calc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ec-fast-calc/id6748915950/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 5 weeks | **Weekly** |
| Monetization | — | Ad-supported |
| Size | 49 MB | 8 MB |
| Requires iOS | **15.0** | 17 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Yukihiro Shioya](https://appshunter.io/developer/1565306192) | [EC Fast Worldwide Limited](https://appshunter.io/developer/1827969035) |

## What reviewers say

### sci.calculator

[App page](https://appshunter.io/ios/app/scicalculator/id1620728508)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| remove Ads | $1.99 | one-time |


### ec Fast Calc

[App page](https://appshunter.io/ios/app/ec-fast-calc/id6748915950)

This app simplifies daily calculations with an intuitive interface. It allows for effortless bill splitting with friends, group expense management, and date/time calculations. Enjoy powerful features and multi-language support for all your computing needs.

**Highlights:** Bill splitting with friends, Group expense management, Weight and package comparison, Date and time calculations, Multi-language support, Intuitive interface

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is sci.calculator free?

sci.calculator is free to download, with in-app purchases available.

### Is ec Fast Calc free?

ec Fast Calc is free to download, with no in-app purchases.

### Do sci.calculator or ec Fast Calc have ads?

ec Fast Calc shows ads; sci.calculator does not.

### Which is updated more often, sci.calculator or ec Fast Calc?

sci.calculator ships an update every 5 weeks, and ec Fast Calc weekly. Most recently, sci.calculator was updated on October 27, 2026 and ec Fast Calc on October 30, 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.*