# KDIAG vs Shade Compass

The clearest difference is review sentiment: Shade Compass at 100% against KDIAG's 31%. Shade Compass also leads on rating (5.0 vs 3.3). KDIAG's advantage is price (Free vs $0.99) and ratings volume (20 vs 2). On update cadence, ads, in-app purchases and device support there is nothing between them.

KDIAG is free to download; Shade Compass costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Shade Compass holds the better App Store score, 5.0 against 3.3. That said, the two scores are not equally well evidenced: KDIAG has 20 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 31% of KDIAG's written reviews are positive against 100% of Shade Compass's.

KDIAG ships an update fortnightly, Shade Compass every 10 days. The most recent releases landed on October 8, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | KDIAG | Shade Compass |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | [3.3 (20 ratings)](https://appshunter.io/ios/app/kdiag/id6450169808/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/shade-compass/id6774860770/reviews)** |
| Number of ratings | **20** | 2 |
| Positive reviews | 30.8% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 10 days** |
| Monetization | **Free** | Paid |
| Size | 74 MB | 1.2 GB |
| Requires iOS | **17.0** | 18.0 |
| Devices | iPhone, iPad | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [祖策 谢](https://appshunter.io/developer/983519195) | [Ira Seferovich](https://appshunter.io/developer/6774395008) |

## What reviewers say

### KDIAG

[App page](https://appshunter.io/ios/app/kdiag/id6450169808)

This app offers comprehensive automotive fault detection and OBD functions for various car brands. It provides professional diagnostic services to quickly identify and resolve car issues, making driving safer and smoother for enthusiasts and professionals alike. The app supports 8 languages and is free to use.

**Highlights:** Comprehensive automotive fault detection, OBD functions, System fault diagnosis for mainstream brands, Free to use, Supports 8 languages, Professional diagnostic services

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

**In-app purchases:** none


### Shade Compass

[App page](https://appshunter.io/ios/app/shade-compass/id6774860770)

Visualize the sun's path and your shadow's position throughout the day. Plan outdoor activities, photography, or gardening with augmented reality features and detailed celestial data.

**Highlights:** Live sun and shadow visualization, Augmented reality sun path, Object shadow casting, 24-hour time scrubber, Golden hour and twilight alerts, Moon and planet tracking, Seasonal sun path analysis

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

**In-app purchases:** none


## Frequently asked questions

### Is KDIAG free?

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

### Is Shade Compass free?

Shade Compass costs $0.99, with no in-app purchases.

### Which has better reviews, KDIAG or Shade Compass?

Shade Compass is rated higher. KDIAG averages 3.3 out of 5 from 20 ratings, while Shade Compass averages 5.0 from 2 ratings.

### Do KDIAG or Shade Compass have ads?

Neither KDIAG nor Shade Compass shows ads.

### Which is updated more often, KDIAG or Shade Compass?

KDIAG ships an update fortnightly, and Shade Compass every 10 days. Most recently, KDIAG was updated on October 8, 2026 and Shade Compass on October 10, 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.*