# mooSound 犢出聲 vs FlowReader

The clearest difference is in-app purchases: mooSound 犢出聲 at none against FlowReader's 1. mooSound 犢出聲 also leads on ads (none vs shown) and iOS requirement (15.0 vs 18.0). On price, update cadence and device support there is nothing between them.

Both are free to download. FlowReader sells 1 one-off in-app purchase. mooSound 犢出聲 asks for nothing beyond the download.

mooSound 犢出聲 ships an update monthly, FlowReader every 2 weeks. The most recent releases landed on November 7, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | mooSound 犢出聲 | FlowReader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (19 ratings)](https://appshunter.io/ios/app/moosound/id1630868483/reviews)** | — |
| Number of ratings | **19** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 81 MB | 321 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 17+ |
| Developer | [eCrowdmedia](https://appshunter.io/developer/942389747) | [YiShou Chen](https://appshunter.io/developer/6813108534) |

## What reviewers say

### mooSound 犢出聲

[App page](https://appshunter.io/ios/app/moosound/id1630868483)

Listen to audiobooks hands-free and utilize your spare time. This app offers customizable playback options like speed, skip intervals, and download settings. It also includes bookmarking and a driving mode with large buttons.

**Highlights:** On-demand playback, Customizable download settings, Adjustable playback speed, Customizable skip intervals, Bookmark functionality, Driving mode with large buttons

**Features:** Siri integration

**In-app purchases:** none


### FlowReader

[App page](https://appshunter.io/ios/app/flowreader-read-in-flow/id6814184505)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FlowReader Pro Lifetime | $11.99 | one-time |


## Frequently asked questions

### Is mooSound 犢出聲 free?

mooSound 犢出聲 is free to download, with no in-app purchases.

### Is FlowReader free?

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

### Do mooSound 犢出聲 or FlowReader have ads?

FlowReader shows ads; mooSound 犢出聲 does not.

### Which is updated more often, mooSound 犢出聲 or FlowReader?

mooSound 犢出聲 ships an update monthly, and FlowReader every 2 weeks. Most recently, mooSound 犢出聲 was updated on November 7, 2026 and FlowReader on October 31, 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.*