# Gako Lang vs SentenceDeck

The clearest difference is update cadence: Gako Lang at every 5 days against SentenceDeck's every 6 weeks. Gako Lang also leads on iOS requirement (15.6 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Gako Lang sells 2 in-app purchases, starting at $2.99 per 3 months and SentenceDeck sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Gako Lang ships an update every 5 days, SentenceDeck every 6 weeks. The most recent releases landed on October 10, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Gako Lang | SentenceDeck |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 6 weeks |
| Size | 97 MB | 36 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Hamza Akbey](https://appshunter.io/developer/1849457706) | [奇濂 任](https://appshunter.io/developer/1843376248) |

## What reviewers say

### Gako Lang

[App page](https://appshunter.io/ios/app/gako-lang/id6754653971)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Gakomini | $2.99 | per 3 months |
| Gakomax | $9.99 | per year |


### SentenceDeck

[App page](https://appshunter.io/ios/app/sentencedeck-shadowing/id6759489049)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Credits 100 | $0.99 | one-time |
| Credits 500 | $3.99 | one-time |
| Credits 1200 | $7.99 | one-time |


## Frequently asked questions

### Is Gako Lang free?

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

### Is SentenceDeck free?

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

### Do Gako Lang or SentenceDeck have ads?

Neither Gako Lang nor SentenceDeck shows ads.

### Which is updated more often, Gako Lang or SentenceDeck?

Gako Lang ships an update every 5 days, and SentenceDeck every 6 weeks. Most recently, Gako Lang was updated on October 10, 2026 and SentenceDeck on October 15, 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.*