# Alfredo Backer vs Science Calc

The clearest difference is update cadence: Science Calc at every 5 days against Alfredo Backer's every 8 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Alfredo Backer ships an update every 8 months, Science Calc every 5 days. The most recent releases landed on September 18, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Alfredo Backer | Science Calc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/science-calc/id1620799327/reviews)** |
| Number of ratings | — | **3** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 5 days** |
| Monetization | — | Free |
| Size | 55 MB | 1 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Externato Alfredo Backer Ltda](https://appshunter.io/developer/1535072495) | [Luke Drushell](https://appshunter.io/developer/1565902401) |

## What reviewers say

### Alfredo Backer

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

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

**In-app purchases:** none


### Science Calc

[App page](https://appshunter.io/ios/app/science-calc/id1620799327)

This app simplifies complex science calculations with handy formulas and simulations. It offers features like wavelength, frequency, and velocity calculations, plus a nuclear bomb blast radius simulator. Enjoy a dark mode for late-night study sessions.

**Highlights:** Wavelength, Frequency, Velocity Calculator, Nuclear Bomb Blast Radius Simulator, Half Life Computation, Atomic Mass Calculation, Volume and Surface Area Calculator, Logarithm Equation Solver, Dark Mode

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Alfredo Backer free?

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

### Is Science Calc free?

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

### Do Alfredo Backer or Science Calc have ads?

Neither Alfredo Backer nor Science Calc shows ads.

### Which is updated more often, Alfredo Backer or Science Calc?

Alfredo Backer ships an update every 8 months, and Science Calc every 5 days. Most recently, Alfredo Backer was updated on September 18, 2026 and Science Calc 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.*