# ZJTY vs HappyLens

The clearest difference is price: ZJTY at Free against HappyLens's $1.99. ZJTY also leads on iOS requirement (10.0 vs 17.0). HappyLens's advantage is update cadence (every 2 months vs every 9 months). On ads, in-app purchases and device support there is nothing between them.

ZJTY is free to download; HappyLens costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ZJTY ships an update every 9 months, HappyLens every 2 months. The most recent releases landed on October 27, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | ZJTY | HappyLens |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 2 months** |
| Monetization | — | Paid |
| Size | 50 MB | 4 MB |
| Requires iOS | **10.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Xiaozhen Technology Co.,Ltd.](https://appshunter.io/developer/1580274508) | [常坤 赵](https://appshunter.io/developer/1738354161) |

## What reviewers say

### ZJTY

[App page](https://appshunter.io/ios/app/zjty/id1633375459)

**Features:** macOS Compatibility

**In-app purchases:** none


### HappyLens

[App page](https://appshunter.io/ios/app/happylens/id6762107901)

This app helps you straighten and clean up photos of artwork, documents, and notes. It automatically detects edges, corrects perspective, and preserves original textures and colors. Processed images are saved locally without uploading to the cloud.

**Highlights:** Automatic edge detection, Manual corner adjustment, Perspective correction, Artwork texture preservation, Ink Wash mode, Document mode, Brightness and contrast fine-tuning

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

**In-app purchases:** none


## Frequently asked questions

### Is ZJTY free?

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

### Is HappyLens free?

HappyLens costs $1.99, with no in-app purchases.

### Do ZJTY or HappyLens have ads?

Neither ZJTY nor HappyLens shows ads.

### Which is updated more often, ZJTY or HappyLens?

ZJTY ships an update every 9 months, and HappyLens every 2 months. Most recently, ZJTY was updated on October 27, 2026 and HappyLens 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.*