# SentenceDeck vs PeraTango

The clearest difference is update cadence: PeraTango at every 6 days against SentenceDeck's every 6 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. SentenceDeck sells 3 one-off in-app purchases and PeraTango sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

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

## The numbers

| Metric | SentenceDeck | PeraTango |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 6 days** |
| Size | 36 MB | 14 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [奇濂 任](https://appshunter.io/developer/1843376248) | [Hiroki Shingu](https://appshunter.io/developer/1195484473) |

## What reviewers say

### 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 |


### PeraTango

[App page](https://appshunter.io/ios/app/peratango/id6766181074)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PeraTango サポーター | $1.99 | one-time |


## Frequently asked questions

### Is SentenceDeck free?

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

### Is PeraTango free?

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

### Do SentenceDeck or PeraTango have ads?

Neither SentenceDeck nor PeraTango shows ads.

### Which is updated more often, SentenceDeck or PeraTango?

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