Comparison

Instrument Toolbox vs GenPass

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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.

About

GenPass

Features
Read full description

A clean, glass-inspired interface for creating secure, beautiful passwords. GenPass makes generating strong, customizable passwords effortless — created entirely on your device, with nothing sent over a network. Choose the length, select character types, copy with a single tap, and revisit past results through history. Features • Glass-style UI for a smooth, modern experience • Password strength shown in 4 levels, with an estimated time to crack • Option to exclude ambiguous characters (0/O, 1/l/I, and more) • Passphrase mode — combine 3 to 8 words from a built-in list of 2,566 English words, with your choice of separator • Generate up to 10 passwords at once; copy them individually or share them all together • Protect your password history with Face ID or Touch ID (off by default, falls back to your passcode), and add a note to each saved entry • Choose Dark, Light, or System theme • Full iPad support, including Split View A refined balance of security and simplicity—crafted for everyday use, entirely offline.

Screenshots

Instrument Toolbox4 screens
GenPass4 screens

Verdict

The call

The clearest difference is price: GenPass at Free against Instrument Toolbox's $1.99. Instrument Toolbox's advantage is ads (none vs shown) and iOS requirement (13.0 vs 26.0). On update cadence, 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

CostPrice · In-app purchases · Ads · Monetization

GenPass is free to download; Instrument Toolbox costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on October 9, 2026 and October 30, 2026 respectively.

Scorecard3 real differences · 5 level
Instrument Toolbox versus GenPass: the parameters behind the verdict, then further details
ParameterInstrument ToolboxGenPass
Price$1.99Free — better
Positive reviews100.0% of reviews—
Update frequencyWeeklyWeekly
AdsNo — betterYes
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better26.0
Further details — not scored
Size8 MB8 MB
Age rating4++4
Developer立娜 王MIZOU, CO., LTD.

In-app purchases

None

Instrument Toolbox

No in-app purchases

None

GenPass

No in-app purchases

Questions

Is Instrument Toolbox free?
Instrument Toolbox costs $1.99, with no in-app purchases.
Is GenPass free?
GenPass is free to download, with no in-app purchases.
Do Instrument Toolbox or GenPass have ads?
GenPass shows ads; Instrument Toolbox does not.
Which is updated more often, Instrument Toolbox or GenPass?
Instrument Toolbox ships an update weekly, and GenPass weekly. Most recently, Instrument Toolbox was updated on October 9, 2026 and GenPass on October 30, 2026.

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