# Stacks vs SayThis

The clearest difference is ads: Stacks at none against SayThis's shown. SayThis's advantage is update cadence (daily vs every 3 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Stacks sells 2 in-app purchases, starting at $9.99 per 3 months and SayThis sells 2 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

Stacks ships an update every 3 months, SayThis daily. The most recent releases landed on October 16, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Stacks | SayThis |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Daily** |
| Monetization | Freemium | — |
| Size | 77 MB | 42 MB |
| Requires iOS | 16.4 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Lewis Hoy](https://appshunter.io/developer/1812196615) | [Everonx](https://appshunter.io/developer/6789786341) |

## 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 |


### SayThis

[App page](https://appshunter.io/ios/app/saythis-learn-korean/id6808048929)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SayThis Plus | $6.99 | per month |
| 100 Credits | $3.99 | one-time |


## Frequently asked questions

### Is Stacks free?

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

### Is SayThis free?

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

### Do Stacks or SayThis have ads?

SayThis shows ads; Stacks does not.

### Which is updated more often, Stacks or SayThis?

Stacks ships an update every 3 months, and SayThis daily. Most recently, Stacks was updated on October 16, 2026 and SayThis on October 9, 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.*