# Spool Buddy vs 3Dcalc+

The clearest difference is price: Spool Buddy at Free against 3Dcalc+'s $4.99. 3Dcalc+'s advantage is rating (5.0 vs 4.3) and in-app purchases (none vs 3). On review sentiment, ratings volume, update cadence and ads there is nothing between them.

Spool Buddy is free to download; 3Dcalc+ costs $4.99 up front. Spool Buddy sells 3 one-off in-app purchases. 3Dcalc+ asks for nothing beyond the download.

3Dcalc+ holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 9 and 7 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Spool Buddy ships an update every 2 weeks, 3Dcalc+ weekly. The most recent releases landed on September 24, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Spool Buddy | 3Dcalc+ |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | [4.3 (9 ratings)](https://appshunter.io/ios/app/spool-buddy/id6752347588/reviews) | **[5.0 (7 ratings)](https://appshunter.io/ios/app/3dcalc-plus/id6752701677/reviews)** |
| Number of ratings | **9** | 7 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Weekly** |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 8 MB | 22 MB |
| Requires iOS | 18.2 | **17.6** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Martian Code Oy](https://appshunter.io/developer/1099214691) | [Juan Jose Coll Garcia](https://appshunter.io/developer/1840613487) |

## What reviewers say

### Spool Buddy

[App page](https://appshunter.io/ios/app/spool-buddy/id6752347588)

Effortlessly manage your 3D printing filament inventory. Track brands, colors, and usage with a simple, fast interface. Syncs seamlessly across Apple devices without requiring logins or network calls.

**Highlights:** iCloud syncing, No logins or network calls, Track brands, colors, and modifiers, Search and filter by properties, Usage and inventory tracking, Optimized for iOS and macOS

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Tip | $0.99 | one-time |
| Medium Tip | $2.99 | one-time |
| Large Tip | $4.99 | one-time |


### 3Dcalc+

[App page](https://appshunter.io/ios/app/3dcalc-plus/id6752701677)

This app helps makers, designers, and 3D printing businesses accurately calculate project costs. It considers materials, print time, and power consumption to provide clear quotes, saving time and avoiding surprises in estimates.

**Highlights:** Calculate project costs, Consider materials, Estimate print time, Factor in power consumption, Generate clear quotes, Track expenses

**In-app purchases:** none


## Frequently asked questions

### Is Spool Buddy free?

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

### Is 3Dcalc+ free?

3Dcalc+ costs $4.99, with no in-app purchases.

### Which has better reviews, Spool Buddy or 3Dcalc+?

3Dcalc+ is rated higher. Spool Buddy averages 4.3 out of 5 from 9 ratings, while 3Dcalc+ averages 5.0 from 7 ratings.

### Do Spool Buddy or 3Dcalc+ have ads?

Neither Spool Buddy nor 3Dcalc+ shows ads.

### Which is updated more often, Spool Buddy or 3Dcalc+?

Spool Buddy ships an update every 2 weeks, and 3Dcalc+ weekly. Most recently, Spool Buddy was updated on September 24, 2026 and 3Dcalc+ on October 5, 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.*