# LangDict vs (Open Source) Periodic Table

The clearest difference is in-app purchases: (Open Source) Periodic Table at none against LangDict's 4. LangDict's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 16.4). On price, update cadence and ads there is nothing between them.

Both are free to download. LangDict sells 4 in-app purchases, starting at $2.99 per month. (Open Source) Periodic Table asks for nothing beyond the download.

LangDict ships an update every 3 weeks, (Open Source) Periodic Table fortnightly. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | LangDict | (Open Source) Periodic Table |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Size | 92 MB | 47 MB |
| Requires iOS | **13.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [MIBUKI](https://appshunter.io/developer/1806268487) | [AHMET EMRE DEDELER](https://appshunter.io/developer/1870913629) |

## What reviewers say

### LangDict

[App page](https://appshunter.io/ios/app/langdict-ai-flashcards/id6744624064)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| LangDict Premium | $2.99 | per month |
| LangDict Premium Monthly | $4.99 | per month |
| LangDict Premium | $5.99 | per month |
| LangDict Premium Annual | $29.99 | per year |


### (Open Source) Periodic Table

[App page](https://appshunter.io/ios/app/open-source-periodic-table/id6781818611)

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

**In-app purchases:** none


## Frequently asked questions

### Is LangDict free?

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

### Is (Open Source) Periodic Table free?

(Open Source) Periodic Table is free to download, with no in-app purchases.

### Do LangDict or (Open Source) Periodic Table have ads?

Neither LangDict nor (Open Source) Periodic Table shows ads.

### Which is updated more often, LangDict or (Open Source) Periodic Table?

LangDict ships an update every 3 weeks, and (Open Source) Periodic Table fortnightly. Most recently, LangDict was updated on October 28, 2026 and (Open Source) Periodic Table on October 25, 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.*