# PerchLens vs Mahjong Card Studio

The clearest difference is review sentiment: Mahjong Card Studio at 100% against PerchLens's 12%. Mahjong Card Studio also leads on rating (4.3 vs 1.9) and update cadence (every 3 days vs every 3 weeks). PerchLens's advantage is in-app purchases (none vs 3) and ratings volume (341 vs 6). On price, ads and device support there is nothing between them.

Both are free to download. Mahjong Card Studio sells 3 in-app purchases, starting at $1.99 per month. PerchLens asks for nothing beyond the download.

Mahjong Card Studio holds the better App Store score, 4.3 against 1.9. That said, the two scores are not equally well evidenced: PerchLens has 341 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 12% of PerchLens's written reviews are positive against 100% of Mahjong Card Studio's.

PerchLens ships an update every 3 weeks, Mahjong Card Studio every 3 days. The most recent releases landed on November 8, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | PerchLens | Mahjong Card Studio |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.9 (341 ratings)](https://appshunter.io/ios/app/perchlens/id6473670884/reviews) | **[4.3 (6 ratings)](https://appshunter.io/ios/app/mahjong-card-studio/id6774391648/reviews)** |
| Number of ratings | **341** | 6 |
| Positive reviews | 12.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 3 days** |
| Monetization | **Free** | Freemium |
| Size | 201 MB | 86 MB |
| Requires iOS | **12.0** | 16.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [POCKET INC](https://appshunter.io/developer/1717359545) | [Lores Logic LLC](https://appshunter.io/developer/1871755948) |

## What reviewers say

### PerchLens

[App page](https://appshunter.io/ios/app/perchlens/id6473670884)

This app enhances bird watching by integrating camera technology with bird feeders to capture images of visiting birds. It offers enthusiasts an innovative way to observe and engage with local wildlife.

**Highlights:** Camera-enabled bird feeder, Captures images of visiting birds, Innovative nature engagement, High-tech bird watching, Feathered friends observation

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Easy to use
- 👍 Works well
- 🚀 Feeder works perfectly
- 👍 Accurate AI recognizer

**What reviewers complain about**

- 🐛 Motion detection too sensitive
- 🐛 Difficult to set up
- 🐛 Unreliable connection
- 🐛 Inaccurate AI bird identification
- 🐛 Camera quality issues

**Reported bugs**

- Inconsistent video recording and storage
- Inability to connect to Wi-Fi
- Login and account issues
- Compatibility problems with newer OS versions

**Requested features**

- Option to turn off AI bird identification
- Improved squirrel deterrent features
- Ability to share videos and photos
- Compatibility with smart home platforms
- Better battery life management


### Mahjong Card Studio

[App page](https://appshunter.io/ios/app/mahjong-card-studio/id6774391648)

Easily design and print custom American Mahjong cards for leagues, parties, or personal events. Choose from numerous holiday and life-milestone templates, personalize them with thematic elements, and export print-ready PDFs.

**Highlights:** Design custom American Mahjong cards, Print-ready PDF export, Holiday and life-milestone templates, Personalize with thematic elements, Trifold format for US Letter, Create 55-hand cards

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Mahjong Card Studio Monthly | $1.99 | per month |
| Mahjong Card Studio Yearly | $5.99 | per year |
| Mahjong Card Studio Print | $0.99 | one-time |


## Frequently asked questions

### Is PerchLens free?

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

### Is Mahjong Card Studio free?

Mahjong Card Studio is free to download, with in-app purchases available.

### Which has better reviews, PerchLens or Mahjong Card Studio?

Mahjong Card Studio is rated higher. PerchLens averages 1.9 out of 5 from 341 ratings, while Mahjong Card Studio averages 4.3 from 6 ratings.

### Do PerchLens or Mahjong Card Studio have ads?

Neither PerchLens nor Mahjong Card Studio shows ads.

### Which is updated more often, PerchLens or Mahjong Card Studio?

PerchLens ships an update every 3 weeks, and Mahjong Card Studio every 3 days. Most recently, PerchLens was updated on November 8, 2026 and Mahjong Card Studio on November 5, 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.*