# API Testing Tool vs Structly

The clearest difference is price: Structly at Free against API Testing Tool's $1.99. Structly also leads on ratings volume (4 vs 1) and device support (3 vs 1). API Testing Tool's advantage is in-app purchases (none vs 3) and rating (5.0 vs 4.8). On review sentiment, update cadence, ads and iOS requirement there is nothing between them.

Structly is free to download; API Testing Tool costs $1.99 up front. Structly sells 3 one-off in-app purchases. API Testing Tool asks for nothing beyond the download.

API Testing Tool holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 1 and 4 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

API Testing Tool ships an update every 2 weeks, Structly fortnightly. The most recent releases landed on October 7, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | API Testing Tool | Structly |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/api-testing-tool/id6739941752/reviews)** | [4.8 (4 ratings)](https://appshunter.io/ios/app/structly-json-formatter/id6753774575/reviews) |
| Number of ratings | 1 | **4** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Fortnightly |
| Monetization | Paid | **Free** |
| Size | 3 MB | 10 MB |
| Requires iOS | 18.0 | **17.6** |
| Devices | iPhone | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [ANDREI EDUARD ISTRATE](https://appshunter.io/developer/1787555844) | [Chen He](https://appshunter.io/developer/1843281784) |

## What reviewers say

### API Testing Tool

[App page](https://appshunter.io/ios/app/api-testing-tool/id6739941752)

This tool allows developers and QA engineers to test and debug APIs directly from their mobile devices. It supports various HTTP request methods, provides detailed response previews, and offers organized storage for saved requests.

**Highlights:** Customizable HTTP requests (GET, POST, PUT), Detailed response preview, Organized storage for API requests, SQLite and iCloud integration, Debug APIs on device

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Tip | $0.99 | one-time |
| Medium Tip | $2.99 | one-time |
| Large Tip | $4.99 | one-time |


## Frequently asked questions

### Is API Testing Tool free?

API Testing Tool costs $1.99, with no in-app purchases.

### Is Structly free?

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

### Which has better reviews, API Testing Tool or Structly?

API Testing Tool is rated higher. API Testing Tool averages 5.0 out of 5 from 1 ratings, while Structly averages 4.8 from 4 ratings.

### Do API Testing Tool or Structly have ads?

Neither API Testing Tool nor Structly shows ads.

### Which is updated more often, API Testing Tool or Structly?

API Testing Tool ships an update every 2 weeks, and Structly fortnightly. Most recently, API Testing Tool was updated on October 7, 2026 and Structly on October 23, 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.*