# 三省 vs Omeria 2

The clearest difference is price: 三省 at Free against Omeria 2's $1.99. 三省 also leads on iOS requirement (17.0 vs 26.0). Omeria 2's advantage is in-app purchases (none vs 3) and update cadence (every 3 days vs every 6 months). On ads and device support there is nothing between them.

三省 is free to download; Omeria 2 costs $1.99 up front. 三省 sells 3 in-app purchases, starting at $2.99 per month. Omeria 2 asks for nothing beyond the download.

三省 ships an update every 6 months, Omeria 2 every 3 days. The most recent releases landed on October 1, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | 三省 | Omeria 2 |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/id6470999911/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 3 days** |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 30 MB | 28 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [嘉达 黄](https://appshunter.io/developer/1708566399) | [和鸣 黄](https://appshunter.io/developer/1834614197) |

## What reviewers say

### 三省

[App page](https://appshunter.io/ios/app/id6470999911)

This cognitive tool uses cards for recording, reviewing, and self-dialogue to aid memory and clear thinking. It offers flexible input methods, knowledge networking, and visual mind mapping to enhance understanding and reflection.

**Highlights:** Card input (typing & handwriting), Bidirectional knowledge linking, Visual mind maps, Self-dialogue mechanism, Spaced repetition review, Cognitive graph building

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ThreeTimes - Monthly Plan | $2.99 | per month |
| ThreeTimes - Yearly Plan | $4.99 | per year |
| ThreeTimes - Lifetime Plan | $9.99 | one-time |


### Omeria 2

[App page](https://appshunter.io/ios/app/omeria-2/id6754274015)

This app helps users manage information through structured recording, organization, and long-term information management. It focuses on content, structure, and relationships, allowing for text, external references, and system data integration within a unified framework.

**Highlights:** Structured text recording and editing, Hierarchical structure view, Bi-directional content linking, Multi-resource type integration, Local data structure for privacy, System-level data management

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

**In-app purchases:** none


## Frequently asked questions

### Is 三省 free?

三省 is free to download, with in-app purchases available.

### Is Omeria 2 free?

Omeria 2 costs $1.99, with no in-app purchases.

### Do 三省 or Omeria 2 have ads?

Neither 三省 nor Omeria 2 shows ads.

### Which is updated more often, 三省 or Omeria 2?

三省 ships an update every 6 months, and Omeria 2 every 3 days. Most recently, 三省 was updated on October 1, 2026 and Omeria 2 on September 29, 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.*