# iCalc Math vs Alfredo Backer

The clearest difference is in-app purchases: Alfredo Backer at none against iCalc Math's 1. iCalc Math's advantage is iOS requirement (7.0 vs 16.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. iCalc Math sells 1 one-off in-app purchase. Alfredo Backer asks for nothing beyond the download.

iCalc Math ships an update every 12 months, Alfredo Backer every 8 months. The most recent releases landed on June 25, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | iCalc Math | Alfredo Backer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/icalc-math/id938389990/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 8 months** |
| Monetization | Free | — |
| Size | 8 MB | 55 MB |
| Requires iOS | **7.0** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Dae-Hyeon Kim](https://appshunter.io/developer/630617759) | [Externato Alfredo Backer Ltda](https://appshunter.io/developer/1535072495) |

## What reviewers say

### iCalc Math

[App page](https://appshunter.io/ios/app/icalc-math/id938389990)

This app offers a versatile calculator with seven distinct modes for various needs, from basic arithmetic and scientific calculations to programming, statistics, unit conversion, matrix operations, and graphing. It supports advanced functions and system conversions.

**Highlights:** Multiple calculation modes (Calculator, Programmer, Statistics, IP Subnet, Unit Converter, Matrix, Grapher), Advanced scientific and trigonometric functions, Number system conversions (DEC, BIN, HEX, OCT), Unit conversion for various measurements, Matrix operations, Function graphing

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| iCalc Math Pro | $0.99 | one-time |


### Alfredo Backer

[App page](https://appshunter.io/ios/app/alfredo-backer/id1212354980)

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

**In-app purchases:** none


## Frequently asked questions

### Is iCalc Math free?

iCalc Math is free to download, with in-app purchases available.

### Is Alfredo Backer free?

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

### Do iCalc Math or Alfredo Backer have ads?

Neither iCalc Math nor Alfredo Backer shows ads.

### Which is updated more often, iCalc Math or Alfredo Backer?

iCalc Math ships an update every 12 months, and Alfredo Backer every 8 months. Most recently, iCalc Math was updated on June 25, 2026 and Alfredo Backer on September 18, 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.*