# Days备忘日 vs 纳米AI

The clearest difference is price: 纳米AI at Free against Days备忘日's $0.99. 纳米AI also leads on update cadence (weekly vs every 2 months). Days备忘日's advantage is in-app purchases (none vs 10). On ads, device support and iOS requirement there is nothing between them.

纳米AI is free to download; Days备忘日 costs $0.99 up front. 纳米AI sells 10 in-app purchases, starting at $6.99 per month. Days备忘日 asks for nothing beyond the download.

Days备忘日 ships an update every 2 months, 纳米AI weekly. The most recent releases landed on November 13, 2026 and November 14, 2026 respectively.

## The numbers

| Metric | Days备忘日 | 纳米AI |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[4.3 (211 ratings)](https://appshunter.io/ios/app/ai/id6737763506/reviews)** |
| Number of ratings | — | **211** |
| Positive reviews | — | 53.8% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | — | Free with in-app purchases |
| Size | 29 MB | 232 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [勋 李](https://appshunter.io/developer/1492204943) | [Beijing Qihoo Technology Co Ltd](https://appshunter.io/developer/441216575) |

## What reviewers say

### Days备忘日

[App page](https://appshunter.io/ios/app/days/id1492204944)

**Features:** macOS Compatibility

**In-app purchases:** none


### 纳米AI

[App page](https://appshunter.io/ios/app/ai/id6737763506)

This AI assistant generates professional-grade videos, reports, and presentations from simple text prompts. It integrates multiple expert AI models and tools to handle complex tasks across various life, work, and creative scenarios, offering a more direct answer than traditional search.

**Highlights:** Generate expert videos from text, Create professional reports and PPTs, Utilize multiple integrated AI models, Customizable AI agents and tools, Personalized search with knowledge base, Image and voice-to-video creation, Multi-modal search (text, voice, photo)

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 连续包月VIP | $6.99 | per month |
| 连续包季VIP | $19.99 | per 3 months |
| 连续包年VIP | $69.99 | per year |
| 100纳米 | $0.99 | one-time |
| 300纳米 | $3.99 | one-time |
| 1个月VIP | $7.99 | one-time |
| 1000纳米 | $14.99 | one-time |
| 年卡（活动） | $59.99 | one-time |
| 5000纳米 | $69.99 | one-time |
| 36个月 | $99.99 | one-time |

**What reviewers like**

- 🚀 Fast search and text organization capabilities
- 👍 Feels good
- 🚀 Fast response speed
- 👍 Convenient and practical

**What reviewers complain about**

- 🐛 No dark mode
- 🐛 Unable to open on Apple Mac
- 🗑️ Trash software
- 🗑️ Deceptive advertising
- 🗑️ Terrible company and software

**Reported bugs**

- Unable to receive verification code for overseas users
- App crashes on older devices

**Requested features**

- Dark mode option
- AI video generation queue improvement


## Frequently asked questions

### Is Days备忘日 free?

Days备忘日 costs $0.99, with no in-app purchases.

### Is 纳米AI free?

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

### Do Days备忘日 or 纳米AI have ads?

Neither Days备忘日 nor 纳米AI shows ads.

### Which is updated more often, Days备忘日 or 纳米AI?

Days备忘日 ships an update every 2 months, and 纳米AI weekly. Most recently, Days备忘日 was updated on November 13, 2026 and 纳米AI on November 14, 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.*