# SecEMS vs Tzp

The clearest difference is rating: Tzp at 5.0 against SecEMS's 3.8. SecEMS's advantage is ratings volume (17 vs 2) and iOS requirement (8.0 vs 11.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. SecEMS sells 4 in-app purchases, starting at $0.99 per month and Tzp sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Tzp holds the better App Store score, 5.0 against 3.8. That said, the two scores are not equally well evidenced: SecEMS has 17 ratings behind it against 2, so its average is the more settled of the two.

SecEMS ships an update every 2 months, Tzp monthly. The most recent releases landed on October 1, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | SecEMS | Tzp |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.8 (17 ratings)](https://appshunter.io/ios/app/secems-secure-messaging/id368185529/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/tzp/id1491282427/reviews)** |
| Number of ratings | **17** | 2 |
| Positive reviews | 62.7% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 242 MB | 48 MB |
| Requires iOS | **8.0** | 11.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Trustmobi](https://appshunter.io/developer/368185532) | [YingShun International Network Co., Limited](https://appshunter.io/developer/1491142407) |

## 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 |


### Tzp

[App page](https://appshunter.io/ios/app/tzp/id1491282427)

This communication app facilitates global connections with features like group chats, voice calls, and multimedia messaging. It prioritizes user privacy through real-time message encryption and offers cross-platform synchronization.

**Highlights:** Cross-platform message sync, Multimedia messaging, Group chats up to 200 people, High-quality voice calls, Real-time message encryption, Virtual number for global calls

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Azp迅聊，话费充值 | $2.99 | one-time |
| Azp迅聊，话费充值 | $10.99 | one-time |
| Azp迅聊，话费充值 | $21.99 | one-time |


## Frequently asked questions

### Is SecEMS free?

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

### Is Tzp free?

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

### Which has better reviews, SecEMS or Tzp?

Tzp is rated higher. SecEMS averages 3.8 out of 5 from 17 ratings, while Tzp averages 5.0 from 2 ratings.

### Do SecEMS or Tzp have ads?

Neither SecEMS nor Tzp shows ads.

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

SecEMS ships an update every 2 months, and Tzp monthly. Most recently, SecEMS was updated on October 1, 2026 and Tzp on October 4, 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.*