# Polymer vs Harv3d

The clearest difference is update cadence: Polymer at monthly against Harv3d's every 3 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Polymer sells 4 one-off in-app purchases and Harv3d sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Polymer ships an update monthly, Harv3d every 3 months. The most recent releases landed on October 22, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Polymer | Harv3d |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (1.7K ratings)](https://appshunter.io/ios/app/polymer-octoprint-3d-printing/id1260531874/reviews)** | — |
| Number of ratings | **1.7K** | — |
| Positive reviews | 80.7% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 3 months |
| Monetization | Free with in-app purchases | — |
| Size | 12 MB | 28 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Lachlan Bell](https://appshunter.io/developer/1260531873) | [SAMUEL R HARVEY](https://appshunter.io/developer/1737755904) |

## What reviewers say

### Polymer

[App page](https://appshunter.io/ios/app/polymer-octoprint-3d-printing/id1260531874)

Manage your 3D printer remotely from your mobile device. Monitor print progress with live camera feeds, view status updates, and control printer functions. Offers an optional upgrade for advanced features and multiple printer support.

**Highlights:** Live camera streaming, Print status monitoring, Start, stop, and pause prints, Control heater temperatures, File management and viewing, Remote access integration

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Kind Tip | $2.99 | one-time |
| Polymer Pro | $9.99 | one-time |
| Generous Tip | $9.99 | one-time |
| Incredible Tip | $14.99 | one-time |

**What reviewers like**

- 👍 Excellent interface and design
- 🚀 Responsive and efficient
- 💡 Great features for controlling 3D printers
- 🔒 Secure connection to OctoPrint
- 🎨 Beautiful and clean UI

**What reviewers complain about**

- 🐛 Occasional connectivity issues
- 🔍 Missing some advanced features like plugins
- ⏱️ Slow response times in some cases
- 🔔 Lack of notifications for print completion

**Reported bugs**

- Camera feed not working consistently
- Settings screen not loading properly on some devices
- Printer connection issues after app updates

**Requested features**

- Landscape mode support for tablets
- Temperature graphs and print progress indicators
- Ability to remotely control printer via VPN
- Push notifications for print status updates


### Harv3d

[App page](https://appshunter.io/ios/app/harv3d/id6776918959)

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro | $4.99 | one-time |


## Frequently asked questions

### Is Polymer free?

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

### Is Harv3d free?

Harv3d is free to download, with in-app purchases available.

### Do Polymer or Harv3d have ads?

Neither Polymer nor Harv3d shows ads.

### Which is updated more often, Polymer or Harv3d?

Polymer ships an update monthly, and Harv3d every 3 months. Most recently, Polymer was updated on October 22, 2026 and Harv3d on October 7, 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.*