# Polyglot Reader vs MemStacks

The clearest difference is ads: MemStacks at none against Polyglot Reader's shown. MemStacks also leads on update cadence (every 2 days vs every 2 months). Polyglot Reader's advantage is iOS requirement (16.0 vs 18.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Polyglot Reader sells 11 in-app purchases, starting at $3.99 per month and MemStacks sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Polyglot Reader ships an update every 2 months, MemStacks every 2 days. The most recent releases landed on September 23, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Polyglot Reader | MemStacks |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (74 ratings)](https://appshunter.io/ios/app/polyglot-reader/id1015619263/reviews)** | — |
| Number of ratings | **74** | — |
| Positive reviews | 65.7% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 2 days** |
| Monetization | Free with in-app purchases | — |
| Size | 120 MB | 18 MB |
| Requires iOS | **16.0** | 18.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Anton Ivanov](https://appshunter.io/developer/594091388) | [Denızcan OZPINAR](https://appshunter.io/developer/1848817078) |

## What reviewers say

### Polyglot Reader

[App page](https://appshunter.io/ios/app/polyglot-reader/id1015619263)

Read books in foreign languages and learn new vocabulary. Tap on unknown words for instant translations and save them to flashcards for later study. Supports various document formats and offers pronunciation practice and knowledge tests.

**Highlights:** Read books in multiple formats (PDF, EPUB, TXT), Translate unknown words and phrases instantly, Create flashcards for vocabulary learning, Pronunciation support for words and phrases, Knowledge tests for vocabulary sets, Scan and recognize text from documents

**Features:** macOS Compatibility

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly subscription | $3.99 | per month |
| Monthly subscription | $7.99 | per month |
| Monthly subscription | $7.99 | per month |
| Monthly subscription | $9.99 | per month |
| Annual subscription | $22.99 | per year |
| Annual subscription | $34.99 | per year |
| Annual subscription | $39.99 | per year |
| Annual subscription | $59.99 | per year |
| Upgrade from advanced to professional version | $3.99 | one-time |
| Upgrade from Starter to Advanced version | $15.99 | one-time |
| Full version | $99.99 | one-time |


### MemStacks

[App page](https://appshunter.io/ios/app/memstacks/id6754551854)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Support the Developer | $0.99 | one-time |


## Frequently asked questions

### Is Polyglot Reader free?

Polyglot Reader is free to download, with in-app purchases available.

### Is MemStacks free?

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

### Do Polyglot Reader or MemStacks have ads?

Polyglot Reader shows ads; MemStacks does not.

### Which is updated more often, Polyglot Reader or MemStacks?

Polyglot Reader ships an update every 2 months, and MemStacks every 2 days. Most recently, Polyglot Reader was updated on September 23, 2026 and MemStacks on September 21, 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.*