Kiwi review
A focused, open-source choice for readable Objective-C behavior specifications.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Kiwi is an open-source Behavior Driven Development library for iOS development. It is designed for developers who want to write readable Objective-C specifications that run in Xcode. Its example structure uses describe, context, it, and specify, giving teams a behavior-oriented way to organize tests. The library also includes lifecycle hooks such as beforeAll, afterAll, beforeEach, and afterEach, along with expectations for values, objects, collections, and messages.
Kiwi’s standout strength is the breadth of its Objective-C testing toolkit. It supports class, protocol, and null mocks; method and message-pattern stubbing; argument capture for mock interactions; asynchronous testing; and custom matcher registration. These features make it suitable for behavior-focused unit testing where readable specifications and detailed mock interactions matter. Installation fits Apple development workflows through CocoaPods or Carthage, with Xcode as the main development environment.
The pricing model is open source, with a free plan and no paid tier structure described for the product. Kiwi is a strong fit for teams working primarily with Objective-C on iOS or macOS that want BDD conventions and extensive mocking support in a local testing workflow. It is less suitable for teams seeking one tool across browser and API testing, since those capabilities are not part of its stated scope. The project documentation also distinguishes Kiwi 2.0 as in active development and Kiwi 1.0 as legacy and no longer updated, so version choice is an important consideration for adoption.
Kiwi pros and cons
- Where it wins
- Rich Objective-C BDD structure with describe, context, it, and specify
- Mocks, stubs, argument capture, matchers, and asynchronous testing
- Xcode, CocoaPods, and Carthage integration
- Where it doesn't
- Focused on macOS and iOS rather than broader testing targets
- No browser testing support
- No API access
Kiwi fact sheet, pricing and score →
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.
Last updated · How we research and update