# Ναυαγοσώστης vs Pi Deliberate

The clearest difference is price: Pi Deliberate at Free against Ναυαγοσώστης's $2.99. Pi Deliberate also leads on iOS requirement (15.1 vs 17.0). On ads, in-app purchases and device support there is nothing between them.

Pi Deliberate is free to download; Ναυαγοσώστης costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Ναυαγοσώστης | Pi Deliberate |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 days | — |
| Monetization | — | Free |
| Size | 61 MB | 25 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ioannis Papapanagiotou](https://appshunter.io/developer/1704757248) | [Byeongsoo Kim](https://appshunter.io/developer/1440292411) |

## What reviewers say

### Ναυαγοσώστης

[App page](https://appshunter.io/ios/app/id6469268214)

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

**In-app purchases:** none


### Pi Deliberate

[App page](https://appshunter.io/ios/app/pi-deliberate/id6757496426)

This app uses memorizing digits of pi to train expertise through deliberate practice. It provides a valid environment, repetitions, and timely feedback to foster recognition, memory, and intuition.

**Highlights:** Memorize digits of pi, Deliberate practice training, Timely feedback on accuracy, Track progress based on mastery, Learn using chunking method, Develop recognition and memory

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Ναυαγοσώστης free?

Ναυαγοσώστης costs $2.99, with no in-app purchases.

### Is Pi Deliberate free?

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

### Do Ναυαγοσώστης or Pi Deliberate have ads?

Neither Ναυαγοσώστης nor Pi Deliberate 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.*