# HeavyCalc Pro vs Baluster Studio

The clearest difference is price: Baluster Studio at Free against HeavyCalc Pro's $39.99. Baluster Studio also leads on update cadence (daily vs every 18 months). HeavyCalc Pro's advantage is in-app purchases (none vs 1) and iOS requirement (15.0 vs 17.0). On ads and device support there is nothing between them.

Baluster Studio is free to download; HeavyCalc Pro costs $39.99 up front. Baluster Studio sells 1 one-off in-app purchase. HeavyCalc Pro asks for nothing beyond the download.

HeavyCalc Pro ships an update every 18 months, Baluster Studio daily. The most recent releases landed on October 20, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | HeavyCalc Pro | Baluster Studio |
| --- | --- | --- |
| Price | $39.99 | **Free** |
| Rating | **[3.0 (6 ratings)](https://appshunter.io/ios/app/heavycalc-pro/id390275254/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 18 months | **Daily** |
| Monetization | Paid | — |
| Size | 62 MB | 27 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Calculated Industries](https://appshunter.io/developer/370406449) | [威臻 闫](https://appshunter.io/developer/1861990693) |

## What reviewers say

### HeavyCalc Pro

[App page](https://appshunter.io/ios/app/heavycalc-pro/id390275254)

This professional construction calculator helps engineers and excavators perform complex calculations for yards, feet-inch-fractions, and metric units. It streamlines estimating time, improves design accuracy, and reduces material and labor expenses with fast, precise solutions for areas, volumes, and loads.

**Highlights:** Dimensional math and conversions (yards, feet-inch-fractions, metric), Calculate areas, volumes, and weight per volume, Fast square-ups and right angles, Cut/fill, shrink, and swell calculations, Cost per unit and pricing solver, Built-in help with key definitions and examples

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

**In-app purchases:** none


### Baluster Studio

[App page](https://appshunter.io/ios/app/baluster-studio/id6774924612)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Baluster Studio Lifetime | $5.99 | one-time |


## Frequently asked questions

### Is HeavyCalc Pro free?

HeavyCalc Pro costs $39.99, with no in-app purchases.

### Is Baluster Studio free?

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

### Do HeavyCalc Pro or Baluster Studio have ads?

Neither HeavyCalc Pro nor Baluster Studio shows ads.

### Which is updated more often, HeavyCalc Pro or Baluster Studio?

HeavyCalc Pro ships an update every 18 months, and Baluster Studio daily. Most recently, HeavyCalc Pro was updated on October 20, 2026 and Baluster Studio 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.*