# CIMOS城市大脑 vs aDiary

The clearest difference is in-app purchases: CIMOS城市大脑 at none against aDiary's 3. CIMOS城市大脑 also leads on iOS requirement (12.0 vs 16.1). aDiary's advantage is update cadence (monthly vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. aDiary sells 3 in-app purchases, starting at $0.49 per 3 months. CIMOS城市大脑 asks for nothing beyond the download.

CIMOS城市大脑 ships an update every 2 months, aDiary monthly. The most recent releases landed on September 30, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | CIMOS城市大脑 | aDiary |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/adiary-type-save-live/id6453160849/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | — | Free with in-app purchases |
| Size | 89 MB | 2 MB |
| Requires iOS | **12.0** | 16.1 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Qingdao City Brain Investment Development Co., Ltd](https://appshunter.io/developer/1531980409) | [高均 欧](https://appshunter.io/developer/1698659995) |

## What reviewers say

### CIMOS城市大脑

[App page](https://appshunter.io/ios/app/cimos/id1544591615)

**Features:** macOS Compatibility

**In-app purchases:** none


### aDiary

[App page](https://appshunter.io/ios/app/adiary-type-save-live/id6453160849)

Capture the essence of your day with brief, text-only entries. This minimalist journal app offers iCloud sync, FaceID protection, and creative sharing templates. Designed for quick daily reflections, it avoids long-form writing and multimedia.

**Highlights:** Text-only daily entries, iCloud Sync, FaceID protection, Multiple journal layouts, Creative sharing templates, Search and date filters, Dark Mode

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Quarterly | $0.49 | per 3 months |
| Annual | $1.39 | per year |
| Lifetime | $2.99 | one-time |


## Frequently asked questions

### Is CIMOS城市大脑 free?

CIMOS城市大脑 is free to download, with no in-app purchases.

### Is aDiary free?

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

### Do CIMOS城市大脑 or aDiary have ads?

Neither CIMOS城市大脑 nor aDiary shows ads.

### Which is updated more often, CIMOS城市大脑 or aDiary?

CIMOS城市大脑 ships an update every 2 months, and aDiary monthly. Most recently, CIMOS城市大脑 was updated on September 30, 2026 and aDiary on October 4, 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.*