# StepFun vs 纳米AI

The clearest difference is ratings volume: 纳米AI at 211 against StepFun's 8. On price, rating, review sentiment and update cadence there is nothing between them.

Both are free to download. StepFun sells 13 in-app purchases, starting at $3.99 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 StepFun 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 8, so its average is the more settled of the two. Written reviews are what separate them: 52% of StepFun's written reviews are positive against 54% of 纳米AI's.

StepFun ships an update every 9 days, 纳米AI weekly. The most recent releases landed on September 22, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | StepFun | 纳米AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (8 ratings)](https://appshunter.io/ios/app/stepfun-stepfun-ai-assistant/id6502382318/reviews) | [4.3 (211 ratings)](https://appshunter.io/ios/app/ai/id6737763506/reviews) |
| Number of ratings | 8 | **211** |
| Positive reviews | 51.5% of reviews | **53.8% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 9 days | **Weekly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 114 MB | 231 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [StepFun Intelligence Co., Ltd.](https://appshunter.io/developer/1745274060) | [Beijing Qihoo Technology Co Ltd](https://appshunter.io/developer/441216575) |

## What reviewers say

### StepFun

[App page](https://appshunter.io/ios/app/stepfun-stepfun-ai-assistant/id6502382318)

This AI assistant helps you think and act more efficiently. It offers smart Q&A, document understanding, and task execution, powered by advanced agent capabilities for faster learning and increased productivity. Enjoy voice-first interactions and automated task management.

**Highlights:** Smart Q&A, Document understanding, Task execution, Voice-first interactions, Agent capabilities, Real-time chat

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

**In-app purchases (13)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 入门月卡 | $3.99 | per month |
| 入门 | $5.99 | per month |
| 阶跃AI标准套餐 | $7.99 | per month |
| 阶跃AI高级套餐 | $14.99 | per month |
| 进阶 | $29.99 | per month |
| 阶跃AI专业套餐 | $49.99 | per month |
| 专业 | $69.99 | per month |
| 限时一周卡 | $0.99 | one-time |
| 入门 | $5.99 | one-time |
| 基础包 | $5.99 | one-time |
| 高阶包 | $14.99 | one-time |
| 进阶 | $29.99 | one-time |
| 专业 | $69.99 | one-time |


### 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 StepFun free?

StepFun 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, StepFun or 纳米AI?

StepFun and 纳米AI are both rated 4.3 out of 5 on the App Store, from 8 and 211 ratings respectively.

### Do StepFun or 纳米AI have ads?

Neither StepFun nor 纳米AI shows ads.

### Which is updated more often, StepFun or 纳米AI?

StepFun ships an update every 9 days, and 纳米AI weekly. Most recently, StepFun was updated on September 22, 2026 and 纳米AI on September 24, 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.*