# Dry Tools vs ASTZ Smart Light

Dry Tools and ASTZ Smart Light are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Dry Tools ships an update every 6 months, ASTZ Smart Light every 3 months. The most recent releases landed on October 13, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Dry Tools | ASTZ Smart Light |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/dry-tools/id1462240541/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 3 months** |
| Monetization | Free | — |
| Size | 45 MB | 75 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [CLIMATE BY DESIGN INTERNATIONAL, INC.](https://appshunter.io/developer/1462240540) | [AWADA Lighting Systems](https://appshunter.io/developer/1182320815) |

## What reviewers say

### Dry Tools

[App page](https://appshunter.io/ios/app/dry-tools/id1462240541)

This app provides HVAC professionals and students with essential calculation tools, including air stream mixing, HVAC formulas, lead time planning, and a psychrometric calculator with weather data. It also offers educational content and industry-specific terminology.

**Highlights:** Air Stream Mixing Calculator, HVAC Formulas, Lead Time Wheel, Psychrometric Calculator, Integrated Weather Data, Educational Content, Industry Glossary

**Features:** macOS Compatibility

**In-app purchases:** none


### ASTZ Smart Light

[App page](https://appshunter.io/ios/app/astz-smart-light/id1613921417)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Dry Tools free?

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

### Is ASTZ Smart Light free?

ASTZ Smart Light is free to download, with no in-app purchases.

### Do Dry Tools or ASTZ Smart Light have ads?

Neither Dry Tools nor ASTZ Smart Light shows ads.

### Which is updated more often, Dry Tools or ASTZ Smart Light?

Dry Tools ships an update every 6 months, and ASTZ Smart Light every 3 months. Most recently, Dry Tools was updated on October 13, 2026 and ASTZ Smart Light 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.*