# 上海地铁 vs Scent Memo

The clearest difference is price: 上海地铁 at Free against Scent Memo's $0.99. 上海地铁 also leads on iOS requirement (9.0 vs 17.0). Scent Memo's advantage is chart position (#199 vs unranked). On update cadence, ads, in-app purchases and device support there is nothing between them.

上海地铁 is free to download; Scent Memo costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

上海地铁 ships an update every 2 months, Scent Memo every 5 weeks. The most recent releases landed on November 6, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | 上海地铁 | Scent Memo |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[1.8 (20 ratings)](https://appshunter.io/ios/app/id473595416/reviews)** | — |
| Number of ratings | **20** | — |
| Positive reviews | 22.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Best chart rank | — | **#199** |
| Size | 85 MB | 7 MB |
| Requires iOS | **9.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [上海地铁](https://appshunter.io/developer/473595419) | [骏豪 马](https://appshunter.io/developer/6784085669) |

## What reviewers say

### 上海地铁

[App page](https://appshunter.io/ios/app/id473595416)

**Features:** macOS Compatibility

**In-app purchases:** none


### Scent Memo

[App page](https://appshunter.io/ios/app/scent-memo/id6784158541)

**Currently charting:** #199 Top Paid · Lifestyle (US App Store)

**In-app purchases:** none


## Frequently asked questions

### Is 上海地铁 free?

上海地铁 is free to download, with no in-app purchases.

### Is Scent Memo free?

Scent Memo costs $0.99, with no in-app purchases.

### Do 上海地铁 or Scent Memo have ads?

Neither 上海地铁 nor Scent Memo shows ads.

### Which is updated more often, 上海地铁 or Scent Memo?

上海地铁 ships an update every 2 months, and Scent Memo every 5 weeks. Most recently, 上海地铁 was updated on November 6, 2026 and Scent Memo on September 23, 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.*