# Tester vs Quack

The clearest difference is rating: Tester at 4.7 against Quack's 4.0. Tester also leads on ads (none vs shown) and update cadence (every 2 days vs every 6 weeks). Quack's advantage is review sentiment (100% vs 90%) and iOS requirement (16.4 vs 18.7). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Tester sells 7 in-app purchases, starting at $0.99 per 7 days and Quack sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Tester holds the better App Store score, 4.7 against 4.0. That said, the two scores are not equally well evidenced: Tester has 584 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 90% of Tester's written reviews are positive against 100% of Quack's, so the app with the better star average is not the one people write more warmly about.

Tester ships an update every 2 days, Quack every 6 weeks. The most recent releases landed on October 18, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Tester | Quack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (584 ratings)](https://appshunter.io/ios/app/tester-super-intelligence/id1575521212/reviews)** | [4.0 (1 ratings)](https://appshunter.io/ios/app/quack-rubber-duck-debugger/id6774760206/reviews) |
| Number of ratings | **584** | 1 |
| Positive reviews | 89.9% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 2 days** | Every 6 weeks |
| Monetization | **Free** | Free with in-app purchases |
| Best chart rank | **#168** | — |
| Size | 76 MB | 50 MB |
| Requires iOS | 18.7 | **16.4** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [FJEDI](https://appshunter.io/developer/1740595411) | [BEK Service LTD](https://appshunter.io/developer/1865488235) |

## What reviewers say

### Tester

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

**Currently charting:** #168 Top Grossing · Developer Tools, #203 Top Free · Developer Tools (US App Store)

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, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tester Go Weekly | $0.99 | per 7 days |
| Tester Go Monthly | $4.99 | per month |
| Tester Plus Monthly | $7.99 | per month |
| Tester Pro Monthly | $19.99 | per month |
| Tester Plus Yearly | $79.99 | per year |
| Tester Pro Yearly | $200.00 | per year |
| Tester Plus Lifetime | $89.99 | 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


### Quack

[App page](https://appshunter.io/ios/app/quack-rubber-duck-debugger/id6774760206)

This app provides a digital rubber duck to help you debug code. Explain your programming issues out loud or by typing, and the app processes your input locally for privacy. It works offline and requires no account, offering a judgment-free space to talk through problems.

**Highlights:** Digital rubber duck debugger, Text or voice input, Hands-free voice mode, On-device processing, No internet required, No account needed

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pirate Duck | $0.99 | one-time |
| Dev Hoodie | $0.99 | one-time |
| Cool Duck | $0.99 | one-time |
| Detective Duck | $1.49 | one-time |
| Wizard Duck | $1.49 | one-time |
| Astronaut Duck | $1.49 | one-time |
| Study Buddy | $1.99 | one-time |
| Decision Maker | $1.99 | one-time |
| Interview Prep | $2.49 | one-time |
| Remove Ads | $2.99 | one-time |


## Frequently asked questions

### Is Tester free?

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

### Is Quack free?

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

### Which has better reviews, Tester or Quack?

Tester is rated higher. Tester averages 4.7 out of 5 from 584 ratings, while Quack averages 4.0 from 1 ratings.

### Do Tester or Quack have ads?

Quack shows ads; Tester does not.

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

Tester ships an update every 2 days, and Quack every 6 weeks. Most recently, Tester was updated on October 18, 2026 and Quack on October 9, 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.*