# 极简 vs Annidiem

The clearest difference is in-app purchases: Annidiem at none against 极简's 3. Annidiem also leads on device support (3 vs 1). On price, update cadence, ads and iOS requirement there is nothing between them.

Both are free to download. 极简 sells 3 one-off in-app purchases. Annidiem asks for nothing beyond the download.

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

## The numbers

| Metric | 极简 | Annidiem |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 9 days** |
| Monetization | — | Free |
| Size | 4 MB | 12 MB |
| Requires iOS | **17.6** | 18.0 |
| Devices | iPhone | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Hangzhou Small Circle Technology Co., Ltd.](https://appshunter.io/developer/1450142828) | [Haiguang Yin](https://appshunter.io/developer/6811499783) |

## What reviewers say

### 极简

[App page](https://appshunter.io/ios/app/ai/id6793863421)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 极简Pro会员一个月 | $2.99 | one-time |
| 极简Pro会员一个季度 | $5.99 | one-time |
| 极简Pro会员一年 | $14.99 | one-time |


### 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 极简 free?

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

### Is Annidiem free?

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

### Do 极简 or Annidiem have ads?

Neither 极简 nor Annidiem shows ads.

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

极简 ships an update fortnightly, and Annidiem every 9 days. Most recently, 极简 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.*