Calc pH vs Heat Exchanger Area
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calc pH
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*** pH - Calculator *** "pH - calculator" is used to calculate the pH value of two mixed liquids. Enter the pH and volume for both liquids and then press calculate. The mixed pH-value will then be displayed..
Heat Exchanger Area
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This app is used to Calculate Required Surface area of tubular Heat Exchangers and No. of Tubes Required for Desired Heat Exchange is calculated in this app. This app is useful for those who are working in process industry, heat exchanger manufacturing industry and fabrication of process equipment field. this app has both mm and inches setting options. In this app Surface area of heat exchanger is calculated by taking input from user as Tube Diameter, tube length and No of Tubes of heat exchanger. In this app No of Tubes required for desired heat exchange is calculated by taking input from user as Tube Diameter, tube length in and Surface area of heat exchanger. it is very handy tool for Tubular heat exchanger maufacturing processional., mechanical engineers and proces engineers.
Screenshots
Verdict
The clearest difference is price: Calc pH at Free against Heat Exchanger Area's $1.99. Calc pH also leads on iOS requirement (9.0 vs 16.1). Heat Exchanger Area's advantage is update cadence (every 28 months vs every 59 months). On ads, 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
Calc pH is free to download; Heat Exchanger Area costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Calc pH ships an update every 59 months, Heat Exchanger Area every 28 months. The most recent releases landed on November 1, 2026 and October 1, 2026 respectively.
| Parameter | Calc pH | Heat Exchanger Area |
|---|---|---|
| Price | Free — better | $1.99 |
| Update frequency | Every 59 months | Every 28 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 9.0 — better | 16.1 |
| Further details — not scored | ||
| Size | 0 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | ZOFTERM | Imran Pinjara |
In-app purchases
Calc pH
No in-app purchases
Heat Exchanger Area
No in-app purchases
Questions
Is Calc pH free?
Is Heat Exchanger Area free?
Do Calc pH or Heat Exchanger Area have ads?
Which is updated more often, Calc pH or Heat Exchanger Area?
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