Compare Flow
By iENGINEERING
Compare Flow is a specialized hydraulic calculation utility for civil engineers and designers on iOS and Android.
The App DNA
What makes this app unique?
The app removes the need for manual Manning's Formula calculations during field drainage topography sessions, providing a portable reference for pipe material comparisons.
For Civil engineers and hydraulic designers evaluating sewer pipe capacity and material alternatives.
What does it look like?
Key features
Calculates hydraulic flow capacity for non-pressure sewers using the industry-standard Manning's Formula.
Evaluates hydraulic capacity across circular, elliptical, arch, and box concrete pipe sections.
Compares flow capacity between concrete, circular thermoplastic, and corrugated metal pipe materials.
How much does it cost?
The app operates as a free utility with no visible monetization, IAP, or ad-supported tiers.
Velocity
Dormant developmentUX improvementsShow more...
Compare Flow has been inactive for over a year, with no updates shipped in the last 373 days. The most recent release provided minor UI improvements and added custom dimension options for pipes, but development has since ceased. Given the lack of activity for more than 12 months, the app is classified as a zombie.
Who built it?
iENGINEERING
2 apps tracked · Productivity
AAPTP Asphalt Paving HandbookUser Sentiment
What do users think recently?
Review voice lately leans thrilled. Users appreciate surveyors find the software highly convenient for calculating drainage topography during field work sessions.
How are ratings & reviews evolving?
What users say, by theme
- Surveyors find the software highly convenient for calculating drainage topography during field work sessions
- Input values for size selections and flow amounts fail to persist when navigating back to the main screen
4 of 4 recent reviews analyzed · limited sample
Read the full review analysisUnlock 1 user request, each backed by review evidence.
Access the full report for freeCompetition
Competitive landscape for Compare Flow
How's the Productivity market?
Compare Flow serves a narrow professional segment, maintaining a 4.6-star rating across 27 total platform reviews. The lack of recent updates since late 2025 suggests the app is currently in maintenance mode rather than active growth.
Read the market outlookThe rivals identified
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Access the full report for freeThe Analyst's Read
Key takeaways for Compare Flow
Where is it heading?
The market for specialized engineering utilities is consolidating around tools that offer stable, multi-platform performance. Compare Flow remains a functional, free utility, but its lack of active development and persistent navigation bugs will likely lead to gradual user attrition as competitors release more stable alternatives.
- The 12-month development silence suggests Compare Flow is in maintenance mode, which risks losing relevance to more actively updated engineering utilities.
- The latest update successfully added custom dimension inputs, but the lack of subsequent fixes for navigation bugs limits the impact of this feature.
The SWOT
- Manning's Formula implementation provides a standardized, reliable calculation engine for sewer design
- Adding export functionality for calculation reports would provide a clear path to professional-grade utility
Next best moves
Fix navigation state persistence because input data loss is the top-reported usability complaint → increase session reliability
The counter-intuitive read
The app's lack of monetization is its primary competitive advantage…
Read the full takeBottom line
Compare Flow provides a reliable calculation engine for civil engineers, but the persistent navigation-based data loss limits its utility in professional field work. Fixing state persistence would stabilize the core user experience and reduce friction for the existing professional base.
Unlock 1 critical friction, 1 market threat and the analyst’s take.
Access the full report for freeFAQ
Is Compare Flow suitable for professional civil engineering work?
Does Compare Flow contain ads or paid subscriptions?
Are there known issues with the app's usability?
Sources
- [1] Play Store listing
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