# Objective C vs Watki

The clearest difference is review sentiment: Watki at 67% against Objective C's 13%. Watki also leads on price (Free vs $0.99). Objective C's advantage is update cadence (every 12 months vs every 134 months) and iOS requirement (16.4 vs 18.0). On ads, in-app purchases and device support there is nothing between them.

Watki is free to download; Objective C costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Objective C ships an update every 12 months, Watki every 134 months. The most recent releases landed on November 1, 2026 and November 11, 2026 respectively.

## The numbers

| Metric | Objective C | Watki |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[3.0 (3 ratings)](https://appshunter.io/ios/app/watki/id1056915836/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | 13.0% of reviews | **66.7% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 12 months** | Every 134 months |
| Monetization | Paid | **Free** |
| Size | 36 MB | 7 MB |
| Requires iOS | **16.4** | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Infinite Loop Development Ltd](https://appshunter.io/developer/463823475) | [Saumya Lahera](https://appshunter.io/developer/921732703) |

## What reviewers say

### Objective C

[App page](https://appshunter.io/ios/app/objective-c/id608199745)

Learn Objective C programming by writing and running code directly on your iPhone or iPad. Compile and execute your programs on a remote server, with results displayed instantly on your device. Ideal for experimenting with code snippets and mastering this powerful language.

**Highlights:** Write Objective C code, Compile and run programs, Remote execution, View output on device, Learn programming language

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

**In-app purchases:** none


### Watki

[App page](https://appshunter.io/ios/app/watki/id1056915836)

This app provides offline access to detailed descriptions of all OpenGL ES commands and functions from the official Khronos Group website. It's designed to help developers easily reference graphics API information, even for beginners.

**Highlights:** Complete OpenGL ES 3.2 command descriptions, Information from official Khronos Group website, Offline access, Systematic function listing, Search bar and index, Landscape mode support

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

**In-app purchases:** none


## Frequently asked questions

### Is Objective C free?

Objective C costs $0.99, with no in-app purchases.

### Is Watki free?

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

### Do Objective C or Watki have ads?

Neither Objective C nor Watki shows ads.

### Which is updated more often, Objective C or Watki?

Objective C ships an update every 12 months, and Watki every 134 months. Most recently, Objective C was updated on November 1, 2026 and Watki on November 11, 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.*