# Swappie app vs Polylino

The clearest difference is update cadence: Polylino at every 3 weeks against Swappie app's every 19 months. Swappie app's advantage is iOS requirement (9.0 vs 15.6). 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.

Swappie app ships an update every 19 months, Polylino every 3 weeks. The most recent releases landed on September 16, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Swappie app | Polylino |
| --- | --- | --- |
| 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 | No |
| Ads | No | No |
| Update frequency | Every 19 months | **Every 3 weeks** |
| Monetization | — | Free |
| Size | 22 MB | 51 MB |
| Requires iOS | **9.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [TriState Technology](https://appshunter.io/developer/626182091) | [ILT Inläsningstjänst AB](https://appshunter.io/developer/1277042293) |

## What reviewers say

### Swappie app

[App page](https://appshunter.io/ios/app/swappie-app/id1252975467)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Swappie app free?

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

### Is Polylino free?

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

### Do Swappie app or Polylino have ads?

Neither Swappie app nor Polylino shows ads.

### Which is updated more often, Swappie app or Polylino?

Swappie app ships an update every 19 months, and Polylino every 3 weeks. Most recently, Swappie app was updated on September 16, 2026 and Polylino on September 20, 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.*