# SecEMS vs 蝉鸣

The clearest difference is in-app purchases: 蝉鸣 at none against SecEMS's 4. 蝉鸣 also leads on update cadence (every 2 weeks vs every 2 months). SecEMS's advantage is iOS requirement (8.0 vs 12.0). On price, ads and device support there is nothing between them.

Both are free to download. SecEMS sells 4 in-app purchases, starting at $0.99 per month. 蝉鸣 asks for nothing beyond the download.

SecEMS ships an update every 2 months, 蝉鸣 every 2 weeks. The most recent releases landed on July 31, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | SecEMS | 蝉鸣 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.8 (17 ratings)](https://appshunter.io/ios/app/secems-secure-messaging/id368185529/reviews)** | — |
| Number of ratings | **17** | — |
| Positive reviews | 62.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 242 MB | 104 MB |
| Requires iOS | **8.0** | 12.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Trustmobi](https://appshunter.io/developer/368185532) | [Cicadasing Technology LLC](https://appshunter.io/developer/1531986177) |

## What reviewers say

### SecEMS

[App page](https://appshunter.io/ios/app/secems-secure-messaging/id368185529)

This secure messaging app offers end-to-end encrypted voice and text conversations. It allows for disappearing messages, group chats, and media sharing with a focus on user privacy and data security.

**Highlights:** End-to-end encryption, Self-destructing messages, Private cloud sync, Group chats up to 100 members, Share photos, videos, and files, Password authentication

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $0.99 | per month |
| Yearly Subscription | $12.99 | per year |
| 密信月会员 | $2.49 | one-time |
| 密信年会员 | $25.99 | one-time |


### 蝉鸣

[App page](https://appshunter.io/ios/app/id1531986175)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SecEMS free?

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

### Is 蝉鸣 free?

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

### Do SecEMS or 蝉鸣 have ads?

Neither SecEMS nor 蝉鸣 shows ads.

### Which is updated more often, SecEMS or 蝉鸣?

SecEMS ships an update every 2 months, and 蝉鸣 every 2 weeks. Most recently, SecEMS was updated on July 31, 2026 and 蝉鸣 on September 18, 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.*