# 一招易投 vs e签盾

The clearest difference is in-app purchases: 一招易投 at none against e签盾's 1. 一招易投 also leads on iOS requirement (13.0 vs 15.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. e签盾 sells 1 one-off in-app purchase. 一招易投 asks for nothing beyond the download.

一招易投 ships an update every 6 weeks, e签盾 every 2 months. The most recent releases landed on September 17, 2026 and August 17, 2026 respectively.

## The numbers

| Metric | 一招易投 | e签盾 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/e/id6450947024/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 2 months |
| Monetization | — | Free with in-app purchases |
| Size | 56 MB | 10 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Beijing Nuolai Shuzhi Technology Co., Ltd](https://appshunter.io/developer/1652798945) | [Hangzhou Timevale Information Technology Co., Ltd.](https://appshunter.io/developer/997614072) |

## What reviewers say

### 一招易投

[App page](https://appshunter.io/ios/app/id6444169223)

**Features:** macOS Compatibility

**In-app purchases:** none


### e签盾

[App page](https://appshunter.io/ios/app/e/id6450947024)

This app provides a comprehensive solution for CA digital certificate management and application. It offers secure identity authentication and electronic signature services for various platforms, eliminating the need for hardware management.

**Highlights:** Online digital certificate application, Secure CA + mobile security module, Hardware-free mobile CA, Admin authorization and permission control, Full-chain evidence preservation, Integration with legal institutions

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| （Apple专用）签署流量包1份 | $0.99 | one-time |


## Frequently asked questions

### Is 一招易投 free?

一招易投 is free to download, with no in-app purchases.

### Is e签盾 free?

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

### Do 一招易投 or e签盾 have ads?

Neither 一招易投 nor e签盾 shows ads.

### Which is updated more often, 一招易投 or e签盾?

一招易投 ships an update every 6 weeks, and e签盾 every 2 months. Most recently, 一招易投 was updated on September 17, 2026 and e签盾 on August 17, 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.*