DuctSizeCalc vs iEverText
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DuctSizeCalc
Easily calculate duct sizes for air conditioning systems using the constant-pressure method. Input wind volume and tap calculate to determine duct dimensions, pressure, and wind velocity. Useful for blueprints, working drawings, and on-site applications.
- Constant-pressure method duct sizing
- Input wind volume for calculation
- Supports rectangular and circular ducts
- Adjustable friction loss and wind velocity
- Automatic height adjustment for WxH interlock
- Metric system calculations
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This app is an application program to which the size of the duct in air conditioning is an easy to select by the constant-pressure method. It is an easy operation only of the input of the amount of the wind and doing the calculation button the tap. An amount of the wind, disadvantageous pressure, and the velocity of the wind can be calculated by an arbitrary size of the duct. Please use it for the reference when you make the blueprint and the working drawing, etc. It is possible to take an active part by various scenes like the site and meeting, etc. [Feature] - The size of the duct can be easily selected only by inputting an arbitrary amount of the wind and pushing the calculation button. - It corresponds to a circular duct besides the rectangular duct. - Friction loss of default can be changed to arbitrary Friction loss. - The velocity of the wind of default can be changed to an arbitrary velocity of the wind. - If Wight of the size of the duct is changed, it is changed automatically to a proper Height size. (When the WxH interlock switch is turning on.) - Friction loss and the velocity of the wind can be examined by fixing by an arbitrary size of the duct. (When the WxH interlock switch is turning off.) - This application is calculated by metric system. - Please see the support site in detail.
iEverText
A versatile text editor for iPhone, iPod touch, and iPad that allows you to capture favorite expressions from webpages and ebooks directly into your notes. Edit shared texts seamlessly between devices and enjoy a full-featured writing experience on the go.
- Capture text from webpages and ebooks
- Edit shared texts between devices
- Multi-document editing
- Email editing text instantly
- Preview webpages and ebooks
- TextExpander touch snippet expansion
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iEverText is the Evernote client application. Do you want to pick favorite expressions out as you browse webpages or ebooks and store them in your notes directly? Do you want to edit a shared text between your computer and iPhone any time creative inspirations strike? That's easy with iEverText! iEverText is a powerful and versatile Text Editor having lots of nice features, available for iPhone, iPod touch, and iPad. iEverText combines practicality with portability - that is what a Writer's Workshop should be. With iEverText, you have all the power you expect from a full-featured multipurpose text editing program - writing and editing several text documents at a time, saving each text onto the Evernote. You can email an editing text instantly, and preview webpages, ebooks, and downloaded files directly in iEverText to utilize their texts. iEverText also allows you to supports TextExpander touch snippet expansion. We sincerely hope iEverText will serve you well, being a good friend for your iPhone, iPod touch, and iPad. With iEverText, enjoy writing flexibly anytime, anywhere!
Screenshots
Verdict
The clearest difference is review sentiment: iEverText at 73% against DuctSizeCalc's 0%. iEverText also leads on rating (5.0 vs 2.0) and update cadence (every 8 months vs every 58 months). On ratings volume, ads, in-app purchases and monetization model 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
DuctSizeCalc costs $2.99 and iEverText $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
iEverText holds the better App Store score, 5.0 against 2.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews point the same way: 0% of DuctSizeCalc's written reviews are positive against 73% of iEverText's.
DuctSizeCalc ships an update every 58 months, iEverText every 8 months. The most recent releases landed on October 8, 2026 and October 13, 2026 respectively.
| Parameter | DuctSizeCalc | iEverText |
|---|---|---|
| Price | $2.99 | $1.99 — better |
| Rating | 2.0 (1 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 0.0% of reviews | 72.7% of reviews — better |
| Number of ratings | 1 | 1 |
| Update frequency | Every 58 months | Every 8 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 9.0 | 9.0 |
| Further details — not scored | ||
| Size | 2 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | Technical Data Service Co.,Ltd. | LIGHT,WAY. |
Customer experience
DuctSizeCalc
iEverText
In-app purchases
DuctSizeCalc
No in-app purchases
iEverText
No in-app purchases









