Ductulate HD vs Electric Toolkit
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Ductulate HD
This app helps HVAC engineers quickly calculate duct size, air volume, pressure loss, and velocity. It supports both imperial and metric units and offers features like scroll lock and customizable themes.
- Calculate duct size, air volume, pressure loss, velocity
- Supports imperial and metric units
- Scroll Lock for accidental touch prevention
- Typical velocity reference chart
- Customizable themes and company logo support
- Favorite measurement markers
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*** NOW INCLUDES IMPERIAL UNITS *** Ductulate HD brings the "Duct Design Calculator" to the iPad. Designed for the HVAC engineer in mind, it can be used exactly the same way as the original "Duct Design Calculator". Ductulate HD provides a quick and simple way to calculate any combination of air volume, pressure loss, velocity and duct size (rectangular or round). Imperial units: - Air Volume, CFM, - Velocity, FPM - Pressure Loss, Inches of H2O - Dimensions, Inches Metric units: - Air Volume, L/sec, - Velocity, m/sec - Pressure Loss, Pa - Dimensions, mm Features: - Scroll Lock to avoid "accidental touches" - Typical velocity reference chart - Clear, easy to read values - Multiple themes to customize the look and feel Markers: - Ability to set a mark to a favorite measurement of Pressure Loss and Velocity for quick reference. Logo Support: - Ability to customize any theme with your company logo/image.
Electric Toolkit
This app provides a comprehensive collection of electrical wiring diagrams and calculators for home projects. It includes various switch and fan wiring configurations, outlet diagrams, and essential calculators for grounding, circuit breakers, and voltage drop, adhering to NEC standards.
- 3-way switch wiring diagrams
- Ceiling fan wiring diagrams
- GFCI wiring diagrams
- Grounding conductor size calculator
- Ohms Law calculator
- Circuit breaker sizing calculator
- Voltage drop calculator
- Audio/Video cable pinouts
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Electric Toolkit is an easy to use collection of electrical wiring diagrams, pinouts, and electrical calculators for home wiring projects. The Electric Toolkit includes: *Seven different 3-way switch wiring diagrams *Seven different Ceiling Fan wiring diagrams *Basic light switch wiring diagrams *4-way switching wiring diagrams *Exhaust/bathroom fan wiring diagrams *Multiple GFCI wiring diagrams *Wall outlet wiring diagram *Grounding conductor size calculator (NEC 2014 through NEC 2023, Table 250-122) *Ohms Law calculator *Sizing a Circuit Breaker calculator (NEC 2023, NEC 2020, NEC 2017, and NEC 2014, 240-6(a)) *Voltage drop calculator *AWG to mm/mm² calculator *Audio/Video Cable pinouts ( Component, DisplayPort, DVI, Ethernet, Firewire, HDMI/Mini HDMI/Micro HDMI, Lightning, LPT(parallel port), PS/2, RCA, Serial port, S-video, USB 3.0/Mini USB/Micro USB/USB-C, and VGA). If you have any suggestions, find bugs, or have any requests, feel free to email them to: techsupport@cyberprodigy.com
Screenshots
Verdict
Ductulate HD and Electric Toolkit both sit at 4.8 stars, but that hides the real split: 93% of Ductulate HD's written reviews are positive against 45% of Electric Toolkit's. Ductulate HD also leads on update cadence (every 4 months vs every 9 months) and iOS requirement (9.0 vs 15.6). Electric Toolkit's advantage is ratings volume (290 vs 24) and price ($5.99 vs $7.99). On rating, ads and in-app purchases 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
Ductulate HD costs $7.99 and Electric Toolkit $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 4.8 for Ductulate HD against 4.8 for Electric Toolkit. That said, the two scores are not equally well evidenced: Electric Toolkit has 290 ratings behind it against 24, so its average is the more settled of the two. Written reviews are what separate them: 93% of Ductulate HD's written reviews are positive against 45% of Electric Toolkit's.
Ductulate HD ships an update every 4 months, Electric Toolkit every 9 months. The most recent releases landed on October 23, 2026 and October 29, 2026 respectively.
| Parameter | Ductulate HD | Electric Toolkit |
|---|---|---|
| Price | $7.99 | $5.99 — better |
| Rating | 4.8 (24 ratings) | 4.8 (290 ratings) — better |
| Positive reviews | 92.6% of reviews — better | 45.2% of reviews |
| Number of ratings | 24 | 290 — better |
| Update frequency | Every 4 months — better | Every 9 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 9.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 33 MB | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | Steven Ramsay | Cyberprodigy LLC |
Customer experience
Ductulate HD
Electric Toolkit
Bugs and requests
Ductulate HD
Not enough reviews yet to summarise bugs or requests.
Electric Toolkit
Reported bugs
3 issues- Voltage drop calculator stopped working
- Calculators have non-functional features (delete key, zero, decimal point)
- Incorrect label for 'Circuit Length' in voltage drop calculator
Requested features
7 requests- More diagrams and schematics
- Ability to create wiring diagrams
- Option to pick installation and auto-layout wiring
- More info about house wiring and residential electrical wiring
- Ability to make printouts
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- App to be written for CSA (UK cable sizes)
- More detailed information on breaker circuits
In-app purchases
Ductulate HD
No in-app purchases
Electric Toolkit
No in-app purchases
Questions
Is Ductulate HD free?
Is Electric Toolkit free?
Which has better reviews, Ductulate HD or Electric Toolkit?
Do Ductulate HD or Electric Toolkit have ads?
Which is updated more often, Ductulate HD or Electric Toolkit?
Other comparisons
