# ROI大师 vs 蝉妈妈AI

The clearest difference is review sentiment: 蝉妈妈AI at 100% against ROI大师's 25%. ROI大师's advantage is update cadence (every 2 weeks vs every 3 months). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. ROI大师 sells 7 in-app purchases, starting at $0.99 per month and 蝉妈妈AI sells 10 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.

ROI大师 ships an update every 2 weeks, 蝉妈妈AI every 3 months. The most recent releases landed on August 13, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | ROI大师 | 蝉妈妈AI |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 25.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 months |
| Monetization | Freemium | Freemium |
| Size | 63 MB | 98 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [丹宁 冯](https://appshunter.io/developer/1452086482) | [Xiamen Chanyu Network Technology Co., Ltd.](https://appshunter.io/developer/1546819012) |

## What reviewers say

### ROI大师

[App page](https://appshunter.io/ios/app/roi/id6743304426)

This tool helps e-commerce operators accurately calculate advertising return on investment (ROI) and optimize pricing strategies. It provides detailed data on ad spend, commissions, profit margins, and break-even points to drive data-informed decisions and reduce wasteful spending.

**Highlights:** Calculate advertising ROI, Optimize product pricing, Analyze ad spend and commissions, Estimate break-even ROI, Simulate costs (logistics, fees), Analyze ad monetization LTV

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 电商ROI计算器月度会员 | $0.99 | per month |
| 电商ROI计算器周度会员 | $0.99 | per 7 days |
| 电商ROI计算器年度会员 | $7.99 | per year |
| 电商ROI计算器周卡会员 | $0.99 | one-time |
| 电商ROI计算器月卡会员 | $2.99 | one-time |
| 电商ROI计算器年卡会员 | $12.99 | one-time |
| 电商ROI计算器终身会员 | $14.99 | one-time |


### 蝉妈妈AI

[App page](https://appshunter.io/ios/app/ai/id6747111630)

This app is a marketing assistant for e-commerce professionals, offering data analysis, content creation, and AI-powered visual tools. It helps users understand market trends, optimize content, and generate professional marketing materials with ease.

**Highlights:** 抖音数据分析与问答, 视频文案提取, 视频分镜拆解, 爆款视频内容模板, AI图片生成, AI视频创作, 虚拟试穿

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 蝉妈妈AI会员连续包月订阅 | $7.99 | per month |
| 蝉妈妈AI季度会员 | $22.99 | one-time |
| 蝉妈妈AI蝉豆1000个 | $29.99 | one-time |
| 蝉妈妈AI-Plus一个月非连续订阅会员 | $39.99 | one-time |
| 蝉妈妈AI蝉豆2500个 | $59.99 | one-time |
| 蝉妈妈AI年会员 | $69.99 | one-time |
| 蝉妈妈AI-Plus三个月非连续订阅会员 | $79.99 | one-time |
| 蝉妈妈AI蝉豆5000个 | $129.99 | one-time |
| 蝉妈妈AI-Plus会员 | $199.99 | one-time |
| 蝉妈妈AI蝉豆10000个 | $249.99 | one-time |


## Frequently asked questions

### Is ROI大师 free?

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

### Is 蝉妈妈AI free?

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

### Do ROI大师 or 蝉妈妈AI have ads?

Neither ROI大师 nor 蝉妈妈AI shows ads.

### Which is updated more often, ROI大师 or 蝉妈妈AI?

ROI大师 ships an update every 2 weeks, and 蝉妈妈AI every 3 months. Most recently, ROI大师 was updated on August 13, 2026 and 蝉妈妈AI on September 14, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*