Duncan Drill Calibration vs FireFly
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Duncan Drill Calibration
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No more fumbling through manuals or using the tractor's in-cab controller. Use the Duncan Seed Drill app on your phone for easy and accurate job configuration and calibration of any new or existing Duncan Renovator or Duncan Enviro drill, and take your drilling operations to the next level of productivity. The Duncan seed drill app contains step-by-step user guides for making calibration and mechanical adjustments to your drill. Great for any new operator or if you're just a bit rusty yourself! Calibrate multiple machines with the app, and get every operator set up with it too so they can do calibrations from their own phone. Calibrating a ground drive drill with seed or fertiliser will the display the required mechanical settings. Connect wirelessly to a Duncan E-Drive drill to set up the sowing rates and run calibrations while you are right beside the drill. Not sure if your Duncan E-Drive drill will connect with the app? Talk to your nearest Duncan dealer to find out more.
FireFly
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FireFly is a pilot-centric flight logging app built for helicopter and fixed-wing pilots who work in the real world β firefighting, utility, aerial work, charter, and contract operations. Designed by a working commercial pilot, FireFly makes it easy to capture engine time, flight time, legs, drops, duty data, and daily summaries directly from your iPhone, without paperwork or company-locked systems. Whether youβre flying multiple tasks in a day or moving between operators, aircraft, or countries, FireFly keeps your data, your history, and your career in one place. Key Features β’ Automatic GPS-based takeoff and landing capture β’ Engine run time and flight time tracking β’ Multi-leg daily operations with accurate summaries β’ Water drop and event logging (firefighting & aerial work) β’ Clean daily ODR-style summaries β’ Pilot-owned data β take it from job to job β’ Simple, fast interface designed for operational flying Terms: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy: https://github.com/BeauNouvelle/privacy-policy/blob/master/firefly_privacy.md
Screenshots
Verdict
The clearest difference is in-app purchases: Duncan Drill Calibration at none against FireFly's 1. Duncan Drill Calibration also leads on iOS requirement (15.1 vs 18). FireFly's advantage is update cadence (every 3 months vs every 8 months). On price, ads and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. FireFly sells 1 in-app purchase, starting at $14.99 per year. Duncan Drill Calibration asks for nothing beyond the download.
Duncan Drill Calibration ships an update every 8 months, FireFly every 3 months. The most recent releases landed on October 27, 2026 and October 20, 2026 respectively.
| Parameter | Duncan Drill Calibration | FireFly |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 8 months | Every 3 months β better |
| Ads | No | No |
| In-app purchases | No β better | Yes |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.1 β better | 18 |
| Further details β not scored | ||
| Size | 34 MB | 18 MB |
| Age rating | 4+ | 4+ |
| Developer | Giltrap Engineering Ltd | Dylan Haycraft |
In-app purchases
Duncan Drill Calibration
No in-app purchases
FireFly
- Yearly1 Month trial$14.991 Year







