# Polylino vs Safe to Play

The clearest difference is in-app purchases: Polylino at none against Safe to Play's 4. Polylino also leads on update cadence (every 3 weeks vs every 2 months). Safe to Play's advantage is iOS requirement (11.0 vs 15.6). On price, ads and device support there is nothing between them.

Both are free to download. Safe to Play sells 4 one-off in-app purchases. Polylino asks for nothing beyond the download.

Polylino ships an update every 3 weeks, Safe to Play every 2 months. The most recent releases landed on September 20, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | Polylino | Safe to Play |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (5 ratings)](https://appshunter.io/ios/app/polylino/id1448749849/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Free | — |
| Size | 51 MB | 8 MB |
| Requires iOS | 15.6 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [ILT Inläsningstjänst AB](https://appshunter.io/developer/1277042293) | [Safe to Play Oy](https://appshunter.io/developer/1479402798) |

## What reviewers say

### Polylino

[App page](https://appshunter.io/ios/app/polylino/id1448749849)

A multilingual digital picture book app designed for educators to use in early childhood classrooms. It offers a library of age-appropriate books with read-aloud or listen options in various languages, supporting emergent literacy and curriculum goals.

**Highlights:** Multilingual digital picture book library, Supports emergent literacy, Culturally diverse books, Picture books and non-fiction, Accessible for all students, Curriculum support

**Features:** macOS Compatibility

**In-app purchases:** none


### Safe to Play

[App page](https://appshunter.io/ios/app/safe-to-play/id1479402799)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Week | $22.99 | one-time |
| 4 Weeks | $46.99 | one-time |
| 1 Year | $119.99 | one-time |
| 3 Years | $229.99 | one-time |


## Frequently asked questions

### Is Polylino free?

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

### Is Safe to Play free?

Safe to Play is free to download, with in-app purchases available.

### Do Polylino or Safe to Play have ads?

Neither Polylino nor Safe to Play shows ads.

### Which is updated more often, Polylino or Safe to Play?

Polylino ships an update every 3 weeks, and Safe to Play every 2 months. Most recently, Polylino was updated on September 20, 2026 and Safe to Play on September 15, 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.*