# 心理学百科 vs Mailmind

The clearest difference is review sentiment: Mailmind at 100% against 心理学百科's 17%. Mailmind also leads on price (Free vs $0.99) and update cadence (every 2 days vs every 132 months). On ads, in-app purchases and device support there is nothing between them.

Mailmind is free to download; 心理学百科 costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

心理学百科 ships an update every 132 months, Mailmind every 2 days. The most recent releases landed on November 2, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | 心理学百科 | Mailmind |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/mailmind/id1549119125/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 16.7% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 132 months | **Every 2 days** |
| Monetization | Paid | **Free** |
| Size | 13 MB | 510 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [振江 张](https://appshunter.io/developer/995742915) | [Chengdu DUYE Culture Communication Co., Ltd](https://appshunter.io/developer/1549119397) |

## What reviewers say

### 心理学百科

[App page](https://appshunter.io/ios/app/id1050082176)

Explore practical psychology with this encyclopedia covering relationship advice, workplace dynamics, and common psychological effects. Understand and apply psychological principles to bring more positivity and happiness into your life.

**Highlights:** Psychological effects, Relationship psychology, Workplace psychology, Practical psychology knowledge, Life improvement tips

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

**In-app purchases:** none


### Mailmind

[App page](https://appshunter.io/ios/app/mailmind/id1549119125)

This platform fosters deep, collaborative connections among users with shared interests. It offers a space for meaningful discussions, creative content sharing, and the development of new ideas in a post-social media environment.

**Highlights:** Decentralized organization, Deep, collaborative social interactions, Interest-based community creation, Original video content sharing, Wiki-style learning, User-created thought vocabulary

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

**In-app purchases:** none


## Frequently asked questions

### Is 心理学百科 free?

心理学百科 costs $0.99, with no in-app purchases.

### Is Mailmind free?

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

### Do 心理学百科 or Mailmind have ads?

Neither 心理学百科 nor Mailmind shows ads.

### Which is updated more often, 心理学百科 or Mailmind?

心理学百科 ships an update every 132 months, and Mailmind every 2 days. Most recently, 心理学百科 was updated on November 2, 2026 and Mailmind on November 7, 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.*