# CADraw vs SimpleSIC by GroundHog

The clearest difference is in-app purchases: SimpleSIC by GroundHog at none against CADraw's 6. CADraw's advantage is 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. CADraw sells 6 in-app purchases, starting at $1.39 per month. SimpleSIC by GroundHog asks for nothing beyond the download.

CADraw ships an update fortnightly, SimpleSIC by GroundHog every 3 weeks. The most recent releases landed on November 3, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | CADraw | SimpleSIC by GroundHog |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.9 (10 ratings)](https://appshunter.io/ios/app/cadraw/id1526269907/reviews)** | — |
| Number of ratings | **10** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 3 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 175 MB | 26 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [诚 张](https://appshunter.io/developer/1526266877) | [rapidBizApps](https://appshunter.io/developer/561997479) |

## What reviewers say

### CADraw

[App page](https://appshunter.io/ios/app/cadraw/id1526269907)

Create and edit precise technical drawings with a variety of tools. Supports layers, annotations, and export to common formats like PDF and DXF. Ideal for detailed design work on mobile devices.

**Highlights:** Draw lines, circles, arcs, Shape editing and modification, Angle constraints, Endpoint and midpoint snapping, Numeric keypad for precise input, Layer management, Annotation tools, Export to PDF and DXF

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly subscription | $1.39 | per month |
| per month | $2.99 | per month |
| Annual subscription | $13.90 | per year |
| per year | $26.00 | per year |
| Upgrade to the full version | $69.99 | one-time |
| Full version | $99.99 | one-time |


### SimpleSIC by GroundHog

[App page](https://appshunter.io/ios/app/simplesic-by-groundhog/id6749256217)

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

**In-app purchases:** none


## Frequently asked questions

### Is CADraw free?

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

### Is SimpleSIC by GroundHog free?

SimpleSIC by GroundHog is free to download, with no in-app purchases.

### Do CADraw or SimpleSIC by GroundHog have ads?

Neither CADraw nor SimpleSIC by GroundHog shows ads.

### Which is updated more often, CADraw or SimpleSIC by GroundHog?

CADraw ships an update fortnightly, and SimpleSIC by GroundHog every 3 weeks. Most recently, CADraw was updated on November 3, 2026 and SimpleSIC by GroundHog on October 4, 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.*