# SentenceDeck vs Fluency Loop

The clearest difference is in-app purchases: Fluency Loop at none against SentenceDeck's 3. Fluency Loop also leads on update cadence (every 3 months vs every 6 months). On price, ads, device support and iOS requirement there is nothing between them.

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

SentenceDeck ships an update every 6 months, Fluency Loop every 3 months. The most recent releases landed on September 29, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | SentenceDeck | Fluency Loop |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 3 months** |
| Size | 10 MB | 152 MB |
| Requires iOS | 17.0 | **16.4** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [奇濂 任](https://appshunter.io/developer/1843376248) | [晓迪 樊](https://appshunter.io/developer/1825256988) |

## 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 |


### Fluency Loop

[App page](https://appshunter.io/ios/app/fluency-loop/id6759702998)

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

**In-app purchases:** none


## Frequently asked questions

### Is SentenceDeck free?

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

### Is Fluency Loop free?

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

### Do SentenceDeck or Fluency Loop have ads?

Neither SentenceDeck nor Fluency Loop shows ads.

### Which is updated more often, SentenceDeck or Fluency Loop?

SentenceDeck ships an update every 6 months, and Fluency Loop every 3 months. Most recently, SentenceDeck was updated on September 29, 2026 and Fluency Loop on September 11, 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.*