# Dri vs TOOL.TRACK

The clearest difference is update cadence: TOOL.TRACK at every 9 days against Dri's every 13 months. On price, ads, 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.

Dri ships an update every 13 months, TOOL.TRACK every 9 days. The most recent releases landed on October 9, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Dri | TOOL.TRACK |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.6 (12 ratings)](https://appshunter.io/ios/app/dri-eaz-psychrometric-calc/id484266596/reviews)** | — |
| Number of ratings | **12** | — |
| Positive reviews | 62.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 13 months | **Every 9 days** |
| Monetization | Free | — |
| Size | 4 MB | 65 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Legend Brands](https://appshunter.io/developer/484266599) | [Solid Duck](https://appshunter.io/developer/1681493657) |

## What reviewers say

### Dri

[App page](https://appshunter.io/ios/app/dri-eaz-psychrometric-calc/id484266596)

This utility app calculates essential drying environment variables. Input temperature and relative humidity to instantly get grains per pound (GPP). Advanced options allow calculation of vapor pressure and air dew point to material, with easy term definitions.

**Highlights:** Calculate grains per pound (GPP), Calculate vapor pressure, Calculate air dew point to material, Switch between F° and C°, Easy-access term definitions

**Features:** macOS Compatibility

**In-app purchases:** none


### TOOL.TRACK

[App page](https://appshunter.io/ios/app/tooltrack/id6447489056)

**In-app purchases:** none


## Frequently asked questions

### Is Dri free?

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

### Is TOOL.TRACK free?

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

### Do Dri or TOOL.TRACK have ads?

Neither Dri nor TOOL.TRACK shows ads.

### Which is updated more often, Dri or TOOL.TRACK?

Dri ships an update every 13 months, and TOOL.TRACK every 9 days. Most recently, Dri was updated on October 9, 2026 and TOOL.TRACK 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.*