# Thor Lithium vs Polyglottos

The clearest difference is update cadence: Polyglottos at every 4 days against Thor Lithium's monthly. Thor Lithium's advantage is iOS requirement (13.0 vs 17.6). 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.

Thor Lithium ships an update monthly, Polyglottos every 4 days. The most recent releases landed on October 3, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Thor Lithium | Polyglottos |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/polyglottos/id6757116319/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 4 days** |
| Monetization | — | Free |
| Size | 52 MB | 1.3 GB |
| Requires iOS | **13.0** | 17.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [江西达伙网络科技有限公司](https://appshunter.io/developer/1234844673) | [In Situ Services, LLC](https://appshunter.io/developer/1864669949) |

## What reviewers say

### Thor Lithium

[App page](https://appshunter.io/ios/app/thor-lithium/id6746757540)

**Features:** macOS Compatibility

**In-app purchases:** none


### Polyglottos

[App page](https://appshunter.io/ios/app/polyglottos/id6757116319)

Translate and learn languages offline with over 200 supported languages. Features voice input/output, phrasebooks with transliterations, and a spaced repetition flashcard system. Prioritizes user privacy with no accounts or data collection.

**Highlights:** Offline translation for 200+ languages, Voice input and output, Phrasebook with transliterations, Spaced repetition flashcards, Multiple learner profiles, No account or data tracking

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

**In-app purchases:** none


## Frequently asked questions

### Is Thor Lithium free?

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

### Is Polyglottos free?

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

### Do Thor Lithium or Polyglottos have ads?

Neither Thor Lithium nor Polyglottos shows ads.

### Which is updated more often, Thor Lithium or Polyglottos?

Thor Lithium ships an update monthly, and Polyglottos every 4 days. Most recently, Thor Lithium was updated on October 3, 2026 and Polyglottos on September 30, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*