Forney vs Instrument Toolbox
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Forney
This utility app provides real-time monitoring of combustion processes via a connected hardware detector. It clearly indicates flame status and offers detailed insights into flame intensity across IR and UV spectrums. The app is designed for safety monitoring and fault diagnosis.
- Flame on/off status indication
- Flame intensity details (IR/UV)
- Flame discrimination settings
- System fault display
- Bluetooth connectivity
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Forney HD Flame Detector mobile app. Use this free app to monitor your combustion process. Clear indication of flame on and flame off status. This app requires the Forney HD Flame detector hardware. This product is available by calling 800-356-7740. When a bluetooth connection is established between your iPhone or iPad and the Forney HD Flame Detector this app indicates the presence of a flame for safety monitoring. The user is also able to see details of flame intensity across a range of frequencies in both the IR and UV spectrums. The app will display settings for flame discrimination (when multiple burners are present). The Forney HD Flame detector is agency approved for use in a wide range of industries. Any system faults are clearly displayed in the app for easy diagnosis by the user. The free app does not allow the user to modify any of the system settings. The Forney HD Pro app is required to tune the system for specific site conditions.
Instrument Toolbox
A professional calculator designed for industrial control, automation, and instrumentation engineers. It offers quick conversions and calculations for gas concentration, units, steam properties, flange levels, and pipeline flow. Ideal for both field debugging and engineering design.
- PPM to mg/m³ conversion with compensation
- Industrial unit conversion (pressure, volume, temp, etc.)
- Saturated steam pressure and density calculator
- Flange level migration calculations
- Pipeline flow and velocity calculator
- Real-time calculation results
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Industrial Control & Instrumentation Toolbox - Your Smart Industrial Calculator A professional calculation toolbox designed for industrial control, automation, and instrumentation engineers. Whether for field debugging or engineering design, it helps you quickly complete various professional calculations. Core Features: PPM to mg/m³ Converter: Gas concentration unit conversion, supports custom molecular weight, built-in quick selection of common gas molecular weights, with environmental temperature and pressure compensation Unit Converter: Covers easy conversion of industrial measurement units including: Pressure (8 units including MPa, kPa, bar, psi, etc.) Volume Temperature Length Mass Saturated Steam Calculator: Input temperature to obtain saturated steam pressure, or input pressure to calculate saturated steam density, meeting steam system design requirements Flange Level Migration: Supports single/dual flange level calculations, with inputs for medium density, flange distance, and other parameters for precise level measurement calibration Pipeline Flow & Velocity Calculator: Applicable for both gas and liquid media, integrates velocity calculation, flow calculation, and diameter calculation, incorporating temperature, pressure, and other operating conditions Key Features: Clean and intuitive interface, easy operation Real-time calculation results Supports standard and operating condition conversions Built-in reference values like standard atmospheric pressure Suitable for both field engineering and design office scenarios This app is an essential professional tool for industrial automation, significantly improving engineering calculation efficiency. Target Users: Automation Engineers, Instrumentation Engineers, Process Engineers, Equipment Engineers, and other industrial control professionals.
Screenshots
Verdict
The clearest difference is price: Forney at Free against Instrument Toolbox's $1.99. Instrument Toolbox's advantage is update cadence (weekly vs every 8 months). On ads, in-app purchases, device support and iOS requirement 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
Forney is free to download; Instrument Toolbox costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Forney ships an update every 8 months, Instrument Toolbox weekly. The most recent releases landed on September 12, 2026 and September 23, 2026 respectively.
| Parameter | Forney | Instrument Toolbox |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 2 — better | — |
| Update frequency | Every 8 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 13.0 |
| Further details — not scored | ||
| Size | 14 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | Forney Corporation | 立娜 王 |
Customer experience
Forney
Instrument Toolbox
In-app purchases
Forney
No in-app purchases
Instrument Toolbox
No in-app purchases









