# Polymer vs Centripetal force

The clearest difference is in-app purchases: Centripetal force at none against Polymer's 4. Centripetal force also leads on update cadence (every 3 days vs monthly) and iOS requirement (13.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. Polymer sells 4 one-off in-app purchases. Centripetal force asks for nothing beyond the download.

Polymer ships an update monthly, Centripetal force every 3 days. The most recent releases landed on September 8, 2026 and December 22, 2025 respectively.

## The numbers

| Metric | Polymer | Centripetal force |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (1.6K ratings)](https://appshunter.io/ios/app/polymer-octoprint-3d-printing/id1260531874/reviews)** | — |
| Number of ratings | **1.6K** | — |
| Positive reviews | 80.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 days** |
| Monetization | Free with in-app purchases | — |
| Size | 12 MB | 11 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Lachlan Bell](https://appshunter.io/developer/1260531873) | [Dhrishty Ghumar](https://appshunter.io/developer/1760664134) |

## 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


### Centripetal force

[App page](https://appshunter.io/ios/app/centripetal-force/id6596785247)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Polymer free?

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

### Is Centripetal force free?

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

### Do Polymer or Centripetal force have ads?

Neither Polymer nor Centripetal force shows ads.

### Which is updated more often, Polymer or Centripetal force?

Polymer ships an update monthly, and Centripetal force every 3 days. Most recently, Polymer was updated on September 8, 2026 and Centripetal force on December 22, 2025.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*