# Diamondback Sizing Calculator vs GeneralAire Humidification

The clearest difference is ads: Diamondback Sizing Calculator at none against GeneralAire Humidification's shown. On price, update cadence, in-app purchases and device support there is nothing between them.

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

Diamondback Sizing Calculator ships an update every 5 months, GeneralAire Humidification every 2 months. The most recent releases landed on May 18, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Diamondback Sizing Calculator | GeneralAire Humidification |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 5 months | **Every 2 months** |
| Size | 46 MB | 219 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [CB Supplies Ltd.](https://appshunter.io/developer/1645869774) | [Canadian General Filters Limited](https://appshunter.io/developer/1783454144) |

## What reviewers say

### Diamondback Sizing Calculator

[App page](https://appshunter.io/ios/app/diamondback-sizing-calculator/id1645869772)

**Features:** macOS Compatibility

**In-app purchases:** none


### GeneralAire Humidification

[App page](https://appshunter.io/ios/app/generalaire-humidification/id6739025982)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Diamondback Sizing Calculator free?

Diamondback Sizing Calculator is free to download, with no in-app purchases.

### Is GeneralAire Humidification free?

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

### Do Diamondback Sizing Calculator or GeneralAire Humidification have ads?

GeneralAire Humidification shows ads; Diamondback Sizing Calculator does not.

### Which is updated more often, Diamondback Sizing Calculator or GeneralAire Humidification?

Diamondback Sizing Calculator ships an update every 5 months, and GeneralAire Humidification every 2 months. Most recently, Diamondback Sizing Calculator was updated on May 18, 2026 and GeneralAire Humidification on September 18, 2026.

---

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