# Span Calc vs ControlMax

The clearest difference is rating: Span Calc at 2.9 against ControlMax's 1.2. Span Calc also leads on update cadence (every 10 days vs every 15 months) and review sentiment (30% vs 0%). On price, ratings volume, ads and in-app purchases there is nothing between them.

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

Span Calc holds the better App Store score, 2.9 against 1.2. Both are backed by a comparable volume of ratings — 15 and 6 respectively. Written reviews point the same way: 30% of Span Calc's written reviews are positive against 0% of ControlMax's.

Span Calc ships an update every 10 days, ControlMax every 15 months. The most recent releases landed on October 12, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Span Calc | ControlMax |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.9 (15 ratings)](https://appshunter.io/ios/app/span-calc/id380481343/reviews)** | [1.2 (6 ratings)](https://appshunter.io/ios/app/controlmax/id1612663037/reviews) |
| Number of ratings | **15** | 6 |
| Positive reviews | **29.6% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 15 months |
| Monetization | Free | Free |
| Size | 168 MB | 68 MB |
| Requires iOS | 14.2 | **14.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [American Wood Council](https://appshunter.io/developer/380481346) | [Titan Tool](https://appshunter.io/developer/1073146892) |

## What reviewers say

### Span Calc

[App page](https://appshunter.io/ios/app/span-calc/id380481343)

Calculate maximum horizontal spans for wood joists and rafters using various lumber species and grades. Compares multiple options for common loading conditions based on NDS® standards.

**Highlights:** Calculates joist and rafter spans, Supports all softwood and hardwood lumber, Uses 2021 NDS® for Wood Construction, Compares multiple species and grades, Handles common loading conditions

**Features:** macOS Compatibility

**In-app purchases:** none


### ControlMax

[App page](https://appshunter.io/ios/app/controlmax/id1612663037)

This app helps you get the best results from your Titan ControlMax sprayer. It provides recommended tip and pressure settings based on your paint and project, and allows you to track all your job details, including photos and invoices. Access helpful resources like how-to videos and owner's manuals.

**Highlights:** Recommended tip & pressure settings, Paint and project scanning, Job and project tracking, Photo capture for jobs, Invoice and receipt storage, How-to videos and tutorials, Owner's manuals access

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Span Calc free?

Span Calc is free to download, with no in-app purchases.

### Is ControlMax free?

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

### Which has better reviews, Span Calc or ControlMax?

Span Calc is rated higher. Span Calc averages 2.9 out of 5 from 15 ratings, while ControlMax averages 1.2 from 6 ratings.

### Do Span Calc or ControlMax have ads?

Neither Span Calc nor ControlMax shows ads.

### Which is updated more often, Span Calc or ControlMax?

Span Calc ships an update every 10 days, and ControlMax every 15 months. Most recently, Span Calc was updated on October 12, 2026 and ControlMax 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.*