# UnderCoverApp vs Shi Pin

The clearest difference is in-app purchases: UnderCoverApp at none against Shi Pin's 1. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Shi Pin sells 1 one-off in-app purchase. UnderCoverApp asks for nothing beyond the download.

UnderCoverApp ships an update every 6 weeks, Shi Pin every 2 months. The most recent releases landed on October 25, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | UnderCoverApp | Shi Pin |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/shi-pin/id6769789541/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 2 months |
| Monetization | — | Freemium |
| Size | 73 MB | 4 MB |
| Requires iOS | **15.1** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [ADK Technology LLC](https://appshunter.io/developer/1781005245) | [雪 苗](https://appshunter.io/developer/545029778) |

## What reviewers say

### UnderCoverApp

[App page](https://appshunter.io/ios/app/undercoverapp/id6757808080)

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

**In-app purchases:** none


### Shi Pin

[App page](https://appshunter.io/ios/app/shi-pin/id6769789541)

Instantly convert Chinese text to PinYin with tone marks by scanning photos or images. This tool helps learners, translators, and travelers effortlessly understand Chinese pronunciation and structure.

**Highlights:** Camera and photo library scanning, Accurate OCR for Chinese characters, PinYin annotations above characters, Smart paragraph composition, Scan history and search, Copy text and formatted PinYin, Customizable display options

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Shi Pin | $1.99 | one-time |


## Frequently asked questions

### Is UnderCoverApp free?

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

### Is Shi Pin free?

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

### Do UnderCoverApp or Shi Pin have ads?

Neither UnderCoverApp nor Shi Pin shows ads.

### Which is updated more often, UnderCoverApp or Shi Pin?

UnderCoverApp ships an update every 6 weeks, and Shi Pin every 2 months. Most recently, UnderCoverApp was updated on October 25, 2026 and Shi Pin on October 15, 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.*