# Castora vs Annidiem

The clearest difference is update cadence: Castora at daily against Annidiem's every 9 days. Annidiem's advantage is device support (3 vs 1) and iOS requirement (18.0 vs 26.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Castora ships an update daily, Annidiem every 9 days. The most recent releases landed on October 29, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Castora | Annidiem |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Daily** | Every 9 days |
| Monetization | — | Free |
| Size | 7 MB | 12 MB |
| Requires iOS | 26.0 | **18.0** |
| Devices | iPhone | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Saket Kumar](https://appshunter.io/developer/6807693271) | [Haiguang Yin](https://appshunter.io/developer/6811499783) |

## What reviewers say

### Castora

[App page](https://appshunter.io/ios/app/castora-diecast-tracker/id6808539318)

**Features:** macOS Compatibility, Vision Pro 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 Castora free?

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

### Is Annidiem free?

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

### Do Castora or Annidiem have ads?

Neither Castora nor Annidiem shows ads.

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

Castora ships an update daily, and Annidiem every 9 days. Most recently, Castora was updated on October 29, 2026 and Annidiem 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.*