# 66铃声 vs 纳米AI

The clearest difference is ads: 纳米AI at none against 66铃声's shown. 纳米AI also leads on ratings volume (211 vs 22) and update cadence (weekly vs fortnightly). 66铃声's advantage is iOS requirement (12.1 vs 15.0). On price, rating, in-app purchases and monetization model there is nothing between them.

Both are free to download. 66铃声 sells 4 in-app purchases, starting at $2.49 per month and 纳米AI sells 14 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.3 for 66铃声 against 4.3 for 纳米AI. That said, the two scores are not equally well evidenced: 纳米AI has 211 ratings behind it against 22, so its average is the more settled of the two.

66铃声 ships an update fortnightly, 纳米AI weekly. The most recent releases landed on October 6, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | 66铃声 | 纳米AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (22 ratings)](https://appshunter.io/ios/app/66/id1517634537/reviews)** | [4.3 (211 ratings)](https://appshunter.io/ios/app/ai/id6737763506/reviews) |
| Number of ratings | 22 | **211** |
| Positive reviews | — | 53.8% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Fortnightly | **Weekly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 78 MB | 231 MB |
| Requires iOS | **12.1** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [ABV Mobile](https://appshunter.io/developer/595885253) | [Beijing Qihoo Technology Co Ltd](https://appshunter.io/developer/441216575) |

## What reviewers say

### 66铃声

[App page](https://appshunter.io/ios/app/66/id1517634537)

Easily create custom ringtones by extracting audio from videos or audio files. Trim and edit sound clips to personalize your phone's alerts. Supports a wide range of iPhone models.

**Highlights:** Extract audio from videos, Extract audio from audio files, Quick audio trimming, Customizable sound clips, Direct ringtone setting, Wide iPhone model support

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月度VIP会员 | $2.49 | per month |
| 半年VIP会员 | $8.49 | per 6 months |
| 年度VIP-新手特惠 | $8.99 | per year |
| 年度VIP会员 | $9.49 | per year |


### 纳米AI

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

This app acts as a super intelligent agent, generating expert-level videos, reports, and presentations from simple text prompts. It offers specialized AI agents for various tasks, including image editing, digital human video creation, and PPT generation, all powered by multiple large language models.

**Highlights:** Generate videos, reports, and PPTs from text, Specialized AI agents for various tasks, Digital human video creation, Professional image editing, PPT generation from themes or files, Integrated with 16 large language models, Personalized knowledge base

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

**In-app purchases (14)**

| 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 |
| 6个月VIP | $49.99 | one-time |
| 年卡（活动） | $59.99 | one-time |
| 5000纳米 | $69.99 | one-time |
| 15个月VIP（限时活动） | $79.99 | one-time |
| 12个月VIP | $79.99 | one-time |
| 36个月 | $99.99 | one-time |
| 10000纳米 | $149.99 | 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 66铃声 free?

66铃声 is free to download, with in-app purchases available.

### Is 纳米AI free?

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

### Which has better reviews, 66铃声 or 纳米AI?

66铃声 is rated higher. 66铃声 averages 4.3 out of 5 from 22 ratings, while 纳米AI averages 4.3 from 211 ratings.

### Do 66铃声 or 纳米AI have ads?

66铃声 shows ads; 纳米AI does not.

### Which is updated more often, 66铃声 or 纳米AI?

66铃声 ships an update fortnightly, and 纳米AI weekly. Most recently, 66铃声 was updated on October 6, 2026 and 纳米AI on October 20, 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.*