# Horror Sound Effects vs Troo

The clearest difference is in-app purchases: Horror Sound Effects at none against Troo's 2. Troo's advantage is ads (none vs shown) and update cadence (monthly vs every 3 months). On price, rating, device support and iOS requirement there is nothing between them.

Both are free to download. Troo sells 2 in-app purchases, starting at $6.99 per month. Horror Sound Effects asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Horror Sound Effects against 5.0 for Troo. Both are backed by a comparable volume of ratings — 1 and 4 respectively.

Horror Sound Effects ships an update every 3 months, Troo monthly. The most recent releases landed on October 24, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Horror Sound Effects | Troo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/horror-sound-effects/id6449743744/reviews) | [5.0 (4 ratings)](https://appshunter.io/ios/app/troo/id6608979514/reviews) |
| Number of ratings | 1 | **4** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Monthly** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 20 MB | 108 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Ryouhei Azuma](https://appshunter.io/developer/1353297781) | [Yeti My Friend](https://appshunter.io/developer/1681576766) |

## What reviewers say

### Horror Sound Effects

[App page](https://appshunter.io/ios/app/horror-sound-effects/id6449743744)

Explore a collection of eerie sound effects perfect for horror enthusiasts and Halloween events. Create spooky productions with zombie sounds, ghost voices, and chilling music to enhance fear and excitement. Ideal for pranks, parties, and igniting your imagination.

**Highlights:** Eerie sound effects collection, Suitable for horror movies, Halloween event sounds, Zombie and ghost voices, Spooky music and heartbeat effects, Prank and party use

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

**In-app purchases:** none


### Troo

[App page](https://appshunter.io/ios/app/troo/id6608979514)

This app helps children aged 4-10 develop social, emotional, and relational skills through interactive stories, creative projects, and family activities. It focuses on real-world topics to foster meaningful connections and personal growth.

**Highlights:** Interactive stories, Real-world topics, Hands-on projects, Off-screen activities, Family engagement, Skill development

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 month | $6.99 | per month |
| 1 year | $59.99 | per year |


## Frequently asked questions

### Is Horror Sound Effects free?

Horror Sound Effects is free to download, with no in-app purchases.

### Is Troo free?

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

### Which has better reviews, Horror Sound Effects or Troo?

Horror Sound Effects and Troo are both rated 5.0 out of 5 on the App Store, from 1 and 4 ratings respectively.

### Do Horror Sound Effects or Troo have ads?

Horror Sound Effects shows ads; Troo does not.

### Which is updated more often, Horror Sound Effects or Troo?

Horror Sound Effects ships an update every 3 months, and Troo monthly. Most recently, Horror Sound Effects was updated on October 24, 2026 and Troo on October 30, 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.*