# Calco vs Module manuals

The clearest difference is update cadence: Calco at every 3 months against Module manuals's every 10 months. Calco also leads on iOS requirement (9.0 vs 13.0). 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.

Calco ships an update every 3 months, Module manuals every 10 months. The most recent releases landed on June 25, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | Calco | Module manuals |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 10 months |
| Monetization | Free | — |
| Size | 45 MB | 30 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Bundesamt fur Zoll und Grenzsicherheit BAZG](https://appshunter.io/developer/625269636) | [Schweizer Armee](https://appshunter.io/developer/1510546650) |

## What reviewers say

### Calco

[App page](https://appshunter.io/ios/app/calco-calculator/id626221142)

This app helps determine the alcohol strength of spirits using an alcoholometer. It offers functions for verifying alcohol content at 20°C and calculating the amount of water needed to reach a desired strength.

**Highlights:** Determine alcohol strength (% by volume), Calculate alcohol verification, Calculate spirit reduction, Reference temperature at 20°C, Input from alcoholometer

**Features:** macOS Compatibility

**In-app purchases:** none


### Module manuals

[App page](https://appshunter.io/ios/app/module-manuals/id722163741)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Calco free?

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

### Is Module manuals free?

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

### Do Calco or Module manuals have ads?

Neither Calco nor Module manuals shows ads.

### Which is updated more often, Calco or Module manuals?

Calco ships an update every 3 months, and Module manuals every 10 months. Most recently, Calco was updated on June 25, 2026 and Module manuals on September 7, 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.*