Dri vs BookMPG
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Dri
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.
- Calculate grains per pound (GPP)
- Calculate vapor pressure
- Calculate air dew point to material
- Switch between F° and C°
- Easy-access term definitions
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Calculate drying environment variables quickly and easily with this all-new psychrometric calculator. Just enter temperature and relative humidity and it will instantly calculate grains per pound (GPP). Or use the Advanced section to calculate vapor pressure and air dew point to material. Switch between F° and C° modes. Features easy-access definitions for all terms.
BookMPG
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Elevate your subcontractor management with our comprehensive app tailored for efficient job assignment, estimate creation, and invoice generation. Designed to streamline workflows for technicians working with our company, our app simplifies the process of managing tasks, allowing for seamless communication and increased productivity. Whether you're handling services for condominiums, home apartments, hotels, or private properties across Florida, our intuitive platform empowers you to deliver exceptional service with ease.
Screenshots
Verdict
The clearest difference is update cadence: BookMPG at weekly against Dri's every 13 months. Dri's advantage is iOS requirement (13.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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, BookMPG weekly. The most recent releases landed on October 9, 2026 and October 27, 2026 respectively.
| Parameter | Dri | BookMPG |
|---|---|---|
| Price | Free | Free |
| Rating | 3.6 (12 ratings) — better | — |
| Positive reviews | 62.5% of reviews | — |
| Number of ratings | 12 — better | — |
| Update frequency | Every 13 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 4 MB | 96 MB |
| Age rating | 4+ | 4+ |
| Developer | Legend Brands | Jabez Software, Llc |
In-app purchases
Dri
No in-app purchases
BookMPG
No in-app purchases
