# redOS. vs Tip Calculator

The clearest difference is iOS requirement: redOS. at 13.0 against Tip Calculator's 16.0. 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.

## The numbers

| Metric | redOS. | Tip Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/redos/id781388455/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Weekly | — |
| Monetization | Free | — |
| Size | 42 MB | 31 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Red Eléctrica de España](https://appshunter.io/developer/505983862) | [Rodrigo Guzman](https://appshunter.io/developer/1847061833) |

## What reviewers say

### redOS.

[App page](https://appshunter.io/ios/app/redos/id781388455)

Monitor the real-time status of the electricity system with key operational indicators. Choose between a consumer profile for energy transition engagement or a professional profile for in-depth data on generation, demand, prices, and exchanges.

**Highlights:** Real-time system status, Consumer profile, Professional profile, Electricity demand data, Generation information, CO2 emissions tracking, Price and exchange data

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

**In-app purchases:** none


### Tip Calculator

[App page](https://appshunter.io/ios/app/tip-calculator-fasttip/id6754204035)

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

**In-app purchases:** none


## Frequently asked questions

### Is redOS. free?

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

### Is Tip Calculator free?

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

### Do redOS. or Tip Calculator have ads?

Neither redOS. nor Tip Calculator shows ads.

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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.*