Comparison

Compare Flow vs iHP48

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

Head to head
About

Compare Flow

This application helps engineers and designers evaluate the hydraulic flow capacity of various non-pressure sewer pipe types. It allows for comparisons between different pipe geometries and materials, including concrete, thermoplastic, and metal options.

Highlights
  • Manning's Formula calculation
  • Compare hydraulic flow capacity
  • Evaluate pipe geometry alternatives
  • Compare pipe material options
  • Supports concrete, thermoplastic, and metal pipes
  • Circular, elliptical, arch, and box sections
Features
Read full description

Compare Flow app uses Manning's Formula, the most widely accepted formula for evaluating the hydraulic capacity of non-pressure sewers. In order to evaluate possible alternatives in either pipe geometry or material, use this app to compare the hydraulic flow capacity among various concrete pipes including circular, elliptical, arch and box sections with circular thermoplastic and corrugated metal pipes.

About

iHP48

This app brings the powerful HP48 calculator experience to your mobile device. It offers enhanced performance, seamless file management, and a customizable interface with support for various HP calculator models. Enjoy a familiar and convenient calculator solution without needing extra hardware.

Highlights
  • Supports HP38, HP39, HP48, HP49, HP50 calculators
  • Haptic feedback and customizable zoom options
  • Seamless file transfer via iTunes and Files app
  • Cloud storage integration (iCloud, OneDrive, Dropbox)
  • Object saving/loading and copy/paste functionality
  • Access to calculator packages, skins, and ROMs
  • Internal file manager and extensible settings
Features
Read full description

Introducing iHP48 - Your Ultimate Calculator Companion iHP48 emerges from the necessity to revive the unparalleled calculator experience cherished by university students and engineers across various disciplines. Reviving the legacy of the original calculator, iHP48 delivers enhanced performance without the burden of carrying an additional device in your bag. Experience the simplicity and convenience of having the powerful HP48 at your fingertips once again. Key Features: Wide Compatibility: iHP48 supports HP38, HP39, HP48, HP49, and HP50 calculators. Easily configure your preferred calculator with the Fetch options. Enhanced User Experience: Enjoy Haptic feedback on keypress and customizable haptic styles via Settings. Zoom options tailored to your iPhone and preferences, including a new lift zoom for XS devices. Seamless File Management: Transfer files effortlessly from your computer using iTunes on both PC's and MacOS. Access iHP48 files directly from your device using the Files app and share them with any compatible iOS app. Copy files to and from your favorite cloud providers supported by the Files app, such as iCloud Drive, OneDrive, and Dropbox. Convenient Object Handling: Save or Load objects to/from your device using Files, ensuring your favorite .lib is readily available on your iHP48 stack. Copy and Paste supported objects seamlessly between iOS and the iHP48 Stack. Comprehensive Library: Access a rich library of Calculator Packages, Skin Collections, ROM's, and useful libraries like Meta Kernel and QPI. Intuitive Interface: Benefit from an internal File Manager for simplified file management and an extensible Settings administration accessible directly from the Settings app or via a shortcut from the iHP48 menu. Customizable Experience: Save your current calculator configuration for easy access. Explore special features embedded in various skins, including screen swipes, sounds, and orientation options. No Hidden Costs: iHP48 is completely free, devoid of any enterprise, professional, plus, or ultimate versions. There are no hidden features or payments required. We greatly appreciate any support you offer as we continue to enhance and refine iHP48. For additional information, visit https://www.thinkchile.com/iHP48. Experience the power of the legendary HP48, reinvented for the modern era with iHP48.

Screenshots

Compare Flow4 screens
iHP484 screens

Verdict

The call

Compare Flow and iHP48 both sit at 4.6 stars, but that hides the real split: 88% of iHP48's written reviews are positive against 50% of Compare Flow's. iHP48 also leads on update cadence (monthly vs every 32 months) and ratings volume (302 vs 5). On price, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.6 for Compare Flow against 4.6 for iHP48. That said, the two scores are not equally well evidenced: iHP48 has 302 ratings behind it against 5, so its average is the more settled of the two. Written reviews are what separate them: 50% of Compare Flow's written reviews are positive against 88% of iHP48's.

UpkeepUpdate frequency

Compare Flow ships an update every 32 months, iHP48 monthly. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.

Scorecard3 real differences · 7 level
Compare Flow versus iHP48: the parameters behind the verdict, then further details
ParameterCompare FlowiHP48
PriceFreeFree
Rating4.6 (5 ratings)4.6 (302 ratings) — better
Positive reviews50.0% of reviews88.3% of reviews — better
Number of ratings5302 — better
Update frequencyEvery 32 monthsMonthly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.115.0 — better
Further details — not scored
Size23 MB6 MB
Age rating4+4+
DeveloperiENGINEERING CorporationAlexis Lorca

Customer experience

Compare Flow

All ratings5 ratings
Positive80.0%
Neutral20.0%
Negative0.0%
Written reviews2 reviews
Positive50.0%
Neutral50.0%
Negative0.0%

iHP48

All ratings270 ratings
Positive90.7%
Neutral3.0%
Negative6.3%
Written reviews196 reviews
Positive88.3%
Neutral4.1%
Negative7.7%

Bugs and requests

Compare Flow

Not enough reviews yet to summarise bugs or requests.

iHP48

Reported bugs

3 issues
  • Crashes on startup
  • Inability to save state across sessions
  • Incompatibility with certain iOS devices

Requested features

4 requests
  • Dark mode option
  • Ability to disable haptic feedback
  • Support for HP50G emulation
  • Improved keyboard mapping and arrow key functionality

In-app purchases

None

Compare Flow

No in-app purchases

None

iHP48

No in-app purchases

Questions

Is Compare Flow free?
Compare Flow is free to download, with no in-app purchases.
Is iHP48 free?
iHP48 is free to download, with no in-app purchases.
Which has better reviews, Compare Flow or iHP48?
iHP48 is rated higher. Compare Flow averages 4.6 out of 5 from 5 ratings, while iHP48 averages 4.6 from 302 ratings.
Do Compare Flow or iHP48 have ads?
Neither Compare Flow nor iHP48 shows ads.
Which is updated more often, Compare Flow or iHP48?
Compare Flow ships an update every 32 months, and iHP48 monthly. Most recently, Compare Flow was updated on October 29, 2026 and iHP48 on October 24, 2026.

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