# Spindle Books vs POLYMall

The clearest difference is review sentiment: Spindle Books at 100% against POLYMall's 25%. Spindle Books also leads on iOS requirement (9.0 vs 11.0). POLYMall's advantage is update cadence (every 4 months vs every 8 months). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Spindle Books ships an update every 8 months, POLYMall every 4 months. The most recent releases landed on September 30, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Spindle Books | POLYMall |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.5 (2 ratings)](https://appshunter.io/ios/app/spindle-books/id493709695/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | **100.0% of reviews** | 25.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 4 months** |
| Monetization | Free | Free |
| Size | 65 MB | 11 MB |
| Requires iOS | **9.0** | 11.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [iPortfolio Inc.](https://appshunter.io/developer/486052141) | [Poly Inspiration, Inc.](https://appshunter.io/developer/968089723) |

## What reviewers say

### Spindle Books

[App page](https://appshunter.io/ios/app/spindle-books/id493709695)

This digital reading program uses a 5-step method to help children acquire languages naturally. It incorporates interactive games, audio storytelling, reading practice with accent options, and speaking exercises to enhance language learning efficiency.

**Highlights:** 5-step Multi-dimension Reading, Brain relaxer word games, Audio storytelling with hidden text, Reading with accent and speed control, Speaking practice with native speaker audio, Dynamic after-reading activities

**In-app purchases:** none


### POLYMall

[App page](https://appshunter.io/ios/app/polymall/id1327215979)

This app serves as a dedicated shopping portal for educational materials from KOREAPOLYSCHOOL. It allows registered users to easily browse and purchase textbooks and other required items by student, semester, or campus. Users can also group items into sets for convenient ordering and track their purchase history.

**Highlights:** Purchase textbooks by student, Select by semester and campus, Bundle items into sets, Browse by category, View order history, Exclusive for POLY School members

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Spindle Books free?

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

### Is POLYMall free?

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

### Do Spindle Books or POLYMall have ads?

Neither Spindle Books nor POLYMall shows ads.

### Which is updated more often, Spindle Books or POLYMall?

Spindle Books ships an update every 8 months, and POLYMall every 4 months. Most recently, Spindle Books was updated on September 30, 2026 and POLYMall on October 6, 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.*