# JSON格式化 vs iStructly

The clearest difference is price: iStructly at Free against JSON格式化's $0.99. iStructly also leads on update cadence (daily vs every 2 days). JSON格式化's advantage is iOS requirement (14.0 vs 17.0). On ads, in-app purchases and device support there is nothing between them.

iStructly is free to download; JSON格式化 costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

JSON格式化 ships an update every 2 days, iStructly daily. The most recent releases landed on September 10, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | JSON格式化 | iStructly |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 days | **Daily** |
| Size | 1 MB | 1 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [珍珍 张](https://appshunter.io/developer/1607946529) | [Basel AbuTaleb](https://appshunter.io/developer/1604005525) |

## What reviewers say

### JSON格式化

[App page](https://appshunter.io/ios/app/json/id6450169970)

**Features:** Safari Extension, Vision Pro support

**In-app purchases:** none


### iStructly

[App page](https://appshunter.io/ios/app/istructly/id6754259424)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is JSON格式化 free?

JSON格式化 costs $0.99, with no in-app purchases.

### Is iStructly free?

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

### Do JSON格式化 or iStructly have ads?

Neither JSON格式化 nor iStructly shows ads.

### Which is updated more often, JSON格式化 or iStructly?

JSON格式化 ships an update every 2 days, and iStructly daily. Most recently, JSON格式化 was updated on September 10, 2026 and iStructly on September 19, 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.*