# 三防 vs e龙岩

The clearest difference is update cadence: 三防 at every 10 days against e龙岩's every 5 weeks. 三防 also leads on iOS requirement (8.0 vs 15). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

三防 ships an update every 10 days, e龙岩 every 5 weeks. The most recent releases landed on September 30, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | 三防 | e龙岩 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 30.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 5 weeks |
| Monetization | — | Free |
| Size | 73 MB | 123 MB |
| Requires iOS | **8.0** | 15 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 9+ |
| Developer | [M2M Technologies Pte Ltd](https://appshunter.io/developer/1128059013) | [big data center of longyan](https://appshunter.io/developer/1509910175) |

## What reviewers say

### 三防

[App page](https://appshunter.io/ios/app/id1244625841)

**Features:** macOS Compatibility

**In-app purchases:** none


### e龙岩

[App page](https://appshunter.io/ios/app/e/id1338979302)

Access city information, check traffic violations, and view real-time bus schedules. Report local issues through the platform.

**Highlights:** City news and information, Vehicle violation checks, Real-time bus tracking, Ticket booking, Issue reporting

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

**In-app purchases:** none


## Frequently asked questions

### Is 三防 free?

三防 is free to download, with no in-app purchases.

### Is e龙岩 free?

e龙岩 is free to download, with no in-app purchases.

### Do 三防 or e龙岩 have ads?

Neither 三防 nor e龙岩 shows ads.

### Which is updated more often, 三防 or e龙岩?

三防 ships an update every 10 days, and e龙岩 every 5 weeks. Most recently, 三防 was updated on September 30, 2026 and e龙岩 on September 21, 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.*