# GREENHOW PRO vs Primo Print3D

The clearest difference is update cadence: GREENHOW PRO at every 5 weeks against Primo Print3D's every 4 months. GREENHOW PRO also leads on iOS requirement (8.0 vs 13.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

GREENHOW PRO ships an update every 5 weeks, Primo Print3D every 4 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | GREENHOW PRO | Primo Print3D |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (4 ratings)](https://appshunter.io/ios/app/primo-print3d/id6450800158/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 4 months |
| Monetization | — | Free |
| Size | 71 MB | 60 MB |
| Requires iOS | **8.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [锦才 钟](https://appshunter.io/developer/1433440881) | [RED WOLF TECHNOLOGY, INC](https://appshunter.io/developer/1640543804) |

## What reviewers say

### GREENHOW PRO

[App page](https://appshunter.io/ios/app/greenhow-pro/id1146358345)

**Features:** macOS Compatibility

**In-app purchases:** none


### Primo Print3D

[App page](https://appshunter.io/ios/app/primo-print3d/id6450800158)

Design and print custom phone cases using your compatible 3D printer. Select from various styles and manage your connected devices directly through the app.

**Highlights:** Control compatible 3D printers, Design custom phone cases, Select phone case styles, Manage connected devices, User-friendly interface

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is GREENHOW PRO free?

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

### Is Primo Print3D free?

Primo Print3D is free to download, with no in-app purchases.

### Do GREENHOW PRO or Primo Print3D have ads?

Neither GREENHOW PRO nor Primo Print3D shows ads.

### Which is updated more often, GREENHOW PRO or Primo Print3D?

GREENHOW PRO ships an update every 5 weeks, and Primo Print3D every 4 months. Most recently, GREENHOW PRO was updated on November 2, 2026 and Primo Print3D on November 3, 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.*