# BrainOpen vs 念昔

The clearest difference is in-app purchases: 念昔 at none against BrainOpen's 1. 念昔 also leads on update cadence (monthly vs every 18 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. BrainOpen sells 1 in-app purchase, starting at $3.99 per month. 念昔 asks for nothing beyond the download.

BrainOpen ships an update every 18 months, 念昔 monthly. The most recent releases landed on October 1, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | BrainOpen | 念昔 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 18 months | **Monthly** |
| Size | 113 MB | 44 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 12+ |
| Developer | [鞯 赵](https://appshunter.io/developer/1567856103) | [其诺 吕](https://appshunter.io/developer/1881180068) |

## What reviewers say

### BrainOpen

[App page](https://appshunter.io/ios/app/brainopen/id1624322578)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| VIP Monthly Card-Unlimited Chat | $3.99 | per month |


### 念昔

[App page](https://appshunter.io/ios/app/id6760034009)

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

**In-app purchases:** none


## Frequently asked questions

### Is BrainOpen free?

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

### Is 念昔 free?

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

### Do BrainOpen or 念昔 have ads?

Neither BrainOpen nor 念昔 shows ads.

### Which is updated more often, BrainOpen or 念昔?

BrainOpen ships an update every 18 months, and 念昔 monthly. Most recently, BrainOpen was updated on October 1, 2026 and 念昔 on October 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.*