# SentenceDeck vs Shadowing

The clearest difference is in-app purchases: Shadowing at none against SentenceDeck's 3. Shadowing also leads on update cadence (every 5 days vs every 6 weeks). SentenceDeck's advantage is ads (none vs shown) and iOS requirement (17.0 vs 26.0). On price and device support there is nothing between them.

Both are free to download. SentenceDeck sells 3 one-off in-app purchases. Shadowing asks for nothing beyond the download.

SentenceDeck ships an update every 6 weeks, Shadowing every 5 days. The most recent releases landed on October 15, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | SentenceDeck | Shadowing |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 6 weeks | **Every 5 days** |
| Size | 36 MB | 16 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [奇濂 任](https://appshunter.io/developer/1843376248) | [Sungwook Baek](https://appshunter.io/developer/1330194841) |

## 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 |


### Shadowing

[App page](https://appshunter.io/ios/app/shadowing-shadowteep/id6772776274)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is SentenceDeck free?

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

### Is Shadowing free?

Shadowing is free to download, with no in-app purchases.

### Do SentenceDeck or Shadowing have ads?

Shadowing shows ads; SentenceDeck does not.

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

SentenceDeck ships an update every 6 weeks, and Shadowing every 5 days. Most recently, SentenceDeck was updated on October 15, 2026 and Shadowing on October 4, 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.*