# Tester vs CaspiAPI

The clearest difference is in-app purchases: CaspiAPI at none against Tester's 3. CaspiAPI also leads on iOS requirement (13.0 vs 15.1). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Tester sells 3 in-app purchases, starting at $4.99 per month. CaspiAPI asks for nothing beyond the download.

Tester ships an update every 2 days, CaspiAPI every 4 days. The most recent releases landed on September 25, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | Tester | CaspiAPI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (574 ratings)](https://appshunter.io/ios/app/tester-ai-worker/id1575521212/reviews)** | — |
| Number of ratings | **574** | — |
| Positive reviews | 89.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 4 days |
| Monetization | Free | — |
| Size | 76 MB | 26 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPad, iPod, Apple Watch | iPhone, iPad, iPod, Mac |
| Age rating | 4+ | 4+ |
| Developer | [FJEDI](https://appshunter.io/developer/1740595411) | [Muhammed Ismayilov](https://appshunter.io/developer/1829143226) |

## What reviewers say

### Tester

[App page](https://appshunter.io/ios/app/tester-ai-worker/id1575521212)

Test various APIs directly from your mobile device. Supports REST, GraphQL, WebSockets, and more, with advanced editors and request customization. Share requests easily and manage cookies and history.

**Highlights:** Test REST, GraphQL, WebSocket, SOAP, JSON RPC, XML, HTTP, HTTPS APIs, Powerful GraphQL editor with query, mutation, subscription support, WebSocket testing tool for WS and WSS connections, Flexible request data encoding and transfer types, Import requests from curl, links, or files (Swagger, OpenAPI, Postman), One-tap request sharing via deep link or cURL command, Apple Watch app for sending requests from your wrist

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tester Plus Monthly | $4.99 | per month |
| Tester Plus Yearly | $24.99 | per year |
| Tester Plus Lifetime | $79.99 | one-time |

**What reviewers like**

- 👍 User-friendly and modern UI
- 🚀 Comprehensive and intuitive
- 🔓 No in-app purchases
- 🛠️ All-in-one dev tool
- 💡 Shortcuts integration

**What reviewers complain about**

- 🐛 Crashes and data loss after updates
- 🔍 Lack of cloud backup/sync
- 🔧 Difficult to manage requests/collections
- 🖱️ Editing issues with long keys
- 🌐 No IPv6 support

**Reported bugs**

- Deleting all saved requests after updates
- App launching to a black screen
- Shortcuts integration not working as expected

**Requested features**

- Add support for environment variables
- Implement folders/collections management
- Allow exporting/importing data as JSON
- Provide more Shortcuts actions
- Add ability to change app icon


### CaspiAPI

[App page](https://appshunter.io/ios/app/caspiapi-api-client/id6780876283)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Tester free?

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

### Is CaspiAPI free?

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

### Do Tester or CaspiAPI have ads?

Neither Tester nor CaspiAPI shows ads.

### Which is updated more often, Tester or CaspiAPI?

Tester ships an update every 2 days, and CaspiAPI every 4 days. Most recently, Tester was updated on September 25, 2026 and CaspiAPI on September 12, 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.*