Engineer's Unit Converter vs A32F Tech
Price, ratings, monetisation and update history for both apps, side by side ā with what reviewers say about each.
Engineer's Unit Converter
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A unit converter built for engineering work rather than for the kitchen. Thirty-two categories, from the everyday ones to the specialist tables you normally go looking for in a handbook: AWG wire gauge, tons of refrigeration, viscosity, water hardness, radiation dose, moment of inertia. EVERY CATEGORY, ALL FREE Length, Area, Pressure/Stress, Mass/Weight, Energy/Work, Power, Force, Torque, Volume, Temperature, Time, Speed, Angle, Data, Frequency, Fuel Economy, Density, Flow, Viscosity, Acceleration, Electric Current, Voltage, Resistance, Electric Charge, Magnetic Flux Density, HVAC Cooling, Water Hardness, Radiation Activity, Radiation Dose, Radiation Equivalent Dose, Moment of Inertia, Wire Gauge. No unlocks, no ad to watch first, no timer. Every category above is open the moment you install. ENGINEERING TOOLS An expression calculator that accepts arithmetic, fractions and scientific notation, so you can type 3/8 or 1.2e-3 straight into the field. An HVAC sizing helper that turns tons of refrigeration into BTU/h, kW and rule-of-thumb airflow. Reference tables for physical constants, thermocouple types and hardness scales. BUILT FOR THE JOB Works fully offline, so it does not care about signal on site. Reads decimal commas and points the way your region writes them. Pin the units you use, hide the ones you never touch, and reorder the rest. Add your own units with a conversion factor. Every conversion is kept in a searchable history you can tap to reuse. No account, no sign-in, no data leaves the device.
A32F Tech
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A32F Tech ā A320 Maintenance Reference The quick-reference tool built for licensed A320 engineers. The reset sequence you can never find, the CB FIN that's not in your head, the MEL deadline you're counting on your fingers ā it's all here, in your pocket. Free ⢠ECAM reset procedures ā browse and search the full ATA-grouped A320 reset manual by chapter or fault title; a selection of procedures are unlocked for Pro subscribers ⢠MEL expiry calculator ā instant Cat B, C, and D deadline calculations ⢠CB locations ā A320 circuit breaker panels with FIN references ⢠Alpha call-ups ā FDIU & SDAC parameter monitoring codes ⢠Acronyms ā maintenance terminology and definitions ⢠Unit converters ā pressure, temperature, torque, and weight Pro ā 14-day free trial on annual plan ⢠Full procedure access ā unlocks all ECAM reset procedures including step-by-step C/B sequences, pre/post conditions, warnings, and countdowns ⢠Bookmarks ā save and quick-access your most-used reset procedures ⢠MMEL reference ā Master MEL, ATA grouped and colour-coded Cat AāD; deactivation task AMM references embedded per entry ⢠MCDL limits ā dispatch limits for missing external parts with MCDL reference ⢠AMM Chapter Reference ā browse the full ATA chapter and sub-chapter structure down to task-level references, with a searchable AMTOSS function code lookup ⢠Avionics computers ā interactive bay diagrams for 80VU, 90VU, 105/106/109VU, and Aft Cargo ⢠Antennas & lighting ā locate every antenna, probe, sensor, and external light on the aircraft ⢠Leakage rates ā allowable fluid limits grouped by system ⢠Panel fastener limits ā AMM fastener limits by panel number with browse diagrams for belly, HStab, and VStab ⢠Structures ā fuselage access panels, frames, and stringers across A320, A321, and A321 XLR ⢠VU panels ā bay-by-bay reference from 6VU to 126VU ⢠My Parts ā personal P/N library with photos, fleet tagging, and IPC/CMM references ⢠My Refs ā personal AMM/TSM/SRM reference notes ⢠My Documents ā PDF and image storage with native viewer and bookmark tree navigation ⢠My Notepad ā personal freeform notes ⢠Calculator library ā 11 aviation calculators: cable tension, fuel uplift, oil consumption, pressure, rivet layout, sheet metal bend, temperature, torque, torque wrench extension, weight, and wire voltage drop. Reorder and show/hide to suit your workflow. Subscription: ā¬19.99/year (~ā¬1.67/month) or ā¬2.99/month. 14-day free trial on the annual plan. A32F Tech is a reference and training aid. Always verify against current approved documentation before use on aircraft. Terms of Use: https://trpengineering.ie/a32ftech/terms
Screenshots
Verdict
The clearest difference is ads: A32F Tech at none against Engineer's Unit Converter's shown. A32F Tech also leads on update cadence (every 10 days vs monthly) and iOS requirement (15.1 vs 18.0). On price, in-app purchases and device support there is nothing between them.
Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS
Both are free to download. Engineer's Unit Converter sells 1 one-off in-app purchase and A32F Tech sells 2 in-app purchases, starting at $17.99 per month. Whichever you choose, the download price is not the number that matters.
Engineer's Unit Converter ships an update monthly, A32F Tech every 10 days. The most recent releases landed on October 26, 2026 and October 9, 2026 respectively.
| Parameter | Engineer's Unit Converter | A32F Tech |
|---|---|---|
| Price | Free | Free |
| Update frequency | Monthly | Every 10 days ā better |
| Ads | Yes | No ā better |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 18.0 | 15.1 ā better |
| Further details ā not scored | ||
| Size | 7 MB | 74 MB |
| Age rating | 4+ | 4+ |
| Developer | Jose Gerardo Palma Duran | TRP Engineering Limited |
In-app purchases
Engineer's Unit Converter
- Remove Ads$0.99
A32F Tech
- A32F Tech Pro (Monthly)$17.991 Month
- A32F Tech Pro (Yearly)$17.991 Year
Questions
Is Engineer's Unit Converter free?
Is A32F Tech free?
Do Engineer's Unit Converter or A32F Tech have ads?
Which is updated more often, Engineer's Unit Converter or A32F Tech?
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