# Stacks vs Learn Thai

Stacks and Learn Thai are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Stacks sells 2 in-app purchases, starting at $9.99 per 3 months and Learn Thai sells 6 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Stacks | Learn Thai |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | — |
| Monetization | Freemium | — |
| Size | 77 MB | 104 MB |
| Requires iOS | 16.4 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Lewis Hoy](https://appshunter.io/developer/1812196615) | [Dinh Thang Tran](https://appshunter.io/developer/1769927807) |

## What reviewers say

### Stacks

[App page](https://appshunter.io/ios/app/stacks-language-flashcards/id6745429203)

Create flashcards from your own experiences and conversations. This app uses spaced repetition to help you remember vocabulary longer with less study. It supports over 100 languages and offers offline study capabilities.

**Highlights:** Create cards from stories and conversations, Spaced repetition system (FSRS), Offline study mode, Automatic translations, Supports over 100 languages, Romanization for select scripts, Clean, minimal interface

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Stacks+ Quarterly | $9.99 | per 3 months |
| Stacks+ Yearly | $27.99 | per year |


### Learn Thai

[App page](https://appshunter.io/ios/app/learn-thai-clearlingo/id6787545667)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ClearLingo Premium Weekly | $3.99 | per 7 days |
| ClearLingo Premium Monthly | $8.99 | per month |
| ClearLingo Premium 3 Months | $19.99 | per 3 months |
| ClearLingo Premium 6 Months | $32.99 | per 6 months |
| ClearLingo Premium Yearly | $49.99 | per year |
| ClearLingo Premium Lifetime | $249.99 | one-time |


## Frequently asked questions

### Is Stacks free?

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

### Is Learn Thai free?

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

### Do Stacks or Learn Thai have ads?

Neither Stacks nor Learn Thai shows ads.

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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.*