# Alfredo Backer vs Functions and integrals

The clearest difference is in-app purchases: Alfredo Backer at none against Functions and integrals's 2. Functions and integrals's advantage is update cadence (every 5 days vs every 8 months) and iOS requirement (9.0 vs 16.0). On price, ads and device support there is nothing between them.

Both are free to download. Functions and integrals sells 2 one-off in-app purchases. Alfredo Backer asks for nothing beyond the download.

Alfredo Backer ships an update every 8 months, Functions and integrals every 5 days. The most recent releases landed on September 18, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | Alfredo Backer | Functions and integrals |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 5 days** |
| Monetization | — | Free with in-app purchases |
| Size | 55 MB | 28 MB |
| Requires iOS | 16.0 | **9.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Externato Alfredo Backer Ltda](https://appshunter.io/developer/1535072495) | [Maxime Haeyaert](https://appshunter.io/developer/1274130669) |

## 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


### Functions and integrals

[App page](https://appshunter.io/ios/app/functions-and-integrals/id1331081431)

This app quickly resolves integrals using a powerful algorithm. It calculates integrals of functions and composite functions, providing detailed steps for easy exercise solving and calculation checking. Simply input your function and let the app handle the rest.

**Highlights:** Integral calculation, Composite function integration, Detailed calculation steps, Quick problem solving, Easy function input

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Advertising | $0.99 | one-time |
| Details and Formulas | $1.99 | one-time |


## Frequently asked questions

### Is Alfredo Backer free?

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

### Is Functions and integrals free?

Functions and integrals is free to download, with in-app purchases available.

### Do Alfredo Backer or Functions and integrals have ads?

Neither Alfredo Backer nor Functions and integrals shows ads.

### Which is updated more often, Alfredo Backer or Functions and integrals?

Alfredo Backer ships an update every 8 months, and Functions and integrals every 5 days. Most recently, Alfredo Backer was updated on September 18, 2026 and Functions and integrals on September 28, 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.*