# Structly vs One Dev Tools

The clearest difference is in-app purchases: Structly at none against One Dev Tools's 2. Structly also leads on device support (3 vs 1). One Dev Tools's advantage is update cadence (fortnightly vs every 2 months). On price, ads and iOS requirement there is nothing between them.

Both are free to download. One Dev Tools sells 2 one-off in-app purchases. Structly asks for nothing beyond the download.

Structly ships an update every 2 months, One Dev Tools fortnightly. Both last shipped on September 27, 2026.

## The numbers

| Metric | Structly | One Dev Tools |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/structly-json-formatter/id6753774575/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | Free | — |
| Size | 8 MB | 20 MB |
| Requires iOS | 17.6 | 17.6 |
| Devices | **iPhone, iPad, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Chen He](https://appshunter.io/developer/1843281784) | [Selma Lindqvist](https://appshunter.io/developer/1896618449) |

## What reviewers say

### Structly

[App page](https://appshunter.io/ios/app/structly-json-formatter/id6753774575)

This tool enhances your browsing experience by transforming raw JSON data into clear, readable views directly within Safari. It offers effortless formatting, advanced search, and versatile export options, all while prioritizing user privacy with on-device operation and no data collection.

**Highlights:** Effortless JSON formatting, Syntax highlighting and collapsible sections, Line numbers for reference, Offline operation, Search keys and values, Execute JSON Path queries, Export to JSON, YAML, or CSV, Customizable themes

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

**In-app purchases:** none


### One Dev Tools

[App page](https://appshunter.io/ios/app/one-dev-tools/id6768955248)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Theme Neon Violet | $1.99 | one-time |
| One Casino | $1.99 | one-time |


## Frequently asked questions

### Is Structly free?

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

### Is One Dev Tools free?

One Dev Tools is free to download, with in-app purchases available.

### Do Structly or One Dev Tools have ads?

Neither Structly nor One Dev Tools shows ads.

### Which is updated more often, Structly or One Dev Tools?

Structly ships an update every 2 months, and One Dev Tools fortnightly. Most recently, Structly was updated on September 27, 2026 and One Dev Tools on September 27, 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.*