# MoonSound vs Annidiem

The clearest difference is price: Annidiem at Free against MoonSound's $0.69. Annidiem also leads on review sentiment (100% vs 67%) and update cadence (weekly vs every 2 weeks). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Annidiem is free to download; MoonSound costs $0.69 up front. Neither carries in-app purchases, so what you see is what you pay.

MoonSound ships an update every 2 weeks, Annidiem weekly. The most recent releases landed on November 5, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | MoonSound | Annidiem |
| --- | --- | --- |
| Price | $0.69 | **Free** |
| Positive reviews | 66.7% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Weekly** |
| Monetization | Paid | **Free** |
| Size | 17 MB | 12 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [顺飞 邹](https://appshunter.io/developer/1860143841) | [Haiguang Yin](https://appshunter.io/developer/6811499783) |

## What reviewers say

### MoonSound

[App page](https://appshunter.io/ios/app/moonsound-clock-and-sounds/id6761410056)

Transform your device into a calming clock, focus timer, and ambient sound mixer. Create personalized soundscapes for sleep, work, or relaxation with customizable timers and offline functionality.

**Highlights:** Customizable clock styles, Ambient sound mixer, Focus timers, Control Center integration, Widgets and Live Activities, Offline functionality

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

**In-app purchases:** none


### Annidiem

[App page](https://appshunter.io/ios/app/annidiem/id6811499781)

This app helps you track and remember important dates beyond standard calendars. It allows you to attach photos, voice memos, and thoughts to specific days, creating a personal diary for each event. You can archive past events while keeping their memories accessible.

**Highlights:** Personalized day records with media, Archiving of past events, Countdown timers for future dates, On-this-day historical recall, Dynamic Island and widget support, Apple Watch integration, Calendar import/export

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

**In-app purchases:** none


## Frequently asked questions

### Is MoonSound free?

MoonSound costs $0.69, with no in-app purchases.

### Is Annidiem free?

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

### Do MoonSound or Annidiem have ads?

Neither MoonSound nor Annidiem shows ads.

### Which is updated more often, MoonSound or Annidiem?

MoonSound ships an update every 2 weeks, and Annidiem weekly. Most recently, MoonSound was updated on November 5, 2026 and Annidiem on November 6, 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.*