# Mailmind vs Know+

The clearest difference is in-app purchases: Mailmind at none against Know+'s 6. Mailmind also leads on update cadence (every 2 days vs every 2 weeks). Know+'s advantage is iOS requirement (11.0 vs 13.0). On price, ads and device support there is nothing between them.

Both are free to download. Know+ sells 6 one-off in-app purchases. Mailmind asks for nothing beyond the download.

Mailmind ships an update every 2 days, Know+ every 2 weeks. The most recent releases landed on September 21, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | Mailmind | Know+ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/mailmind/id1549119125/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 2 weeks |
| Monetization | Free | — |
| Size | 489 MB | 71 MB |
| Requires iOS | 13.0 | **11.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Chengdu DUYE Culture Communication Co., Ltd](https://appshunter.io/developer/1549119397) | [Shanghai Knewtopia Technology, Co., Ltd.](https://appshunter.io/developer/1601990393) |

## What reviewers say

### Mailmind

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

A decentralized social media platform for sharing thoughts, culture, and art. It focuses on spiritual needs and intellectual discussion, offering a space for creative expression and the exploration of abstract concepts.

**Highlights:** Decentralized social media platform, Focus on spiritual needs and intellectual discussion, Artistic and academic content sharing, Video content for expressing thoughts, Community discussions on abstract concepts, Global community with shared values

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

**In-app purchases:** none


### Know+

[App page](https://appshunter.io/ios/app/know-plus/id1601990391)

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 6元即可兑换6金币 | $0.99 | one-time |
| 68元即可兑换68金币 | $9.99 | one-time |
| 88元即可兑换88金币 | $12.99 | one-time |
| 198元即可兑换198金币 | $29.99 | one-time |
| 388元即可兑换388金币 | $59.99 | one-time |
| 998元即可兑换998金币 | $149.99 | one-time |


## Frequently asked questions

### Is Mailmind free?

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

### Is Know+ free?

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

### Do Mailmind or Know+ have ads?

Neither Mailmind nor Know+ shows ads.

### Which is updated more often, Mailmind or Know+?

Mailmind ships an update every 2 days, and Know+ every 2 weeks. Most recently, Mailmind was updated on September 21, 2026 and Know+ on September 15, 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.*