Pump Calculator is an engineering utility for hydraulic system design and performance verification on iOS.
The App DNA
What makes this app unique?
It removes the need for internet connectivity during field calculations, allowing engineers to perform sizing and power estimates in remote industrial environments.
For Mechanical, process, and maintenance engineers, as well as engineering students involved in pump system design and performance verification.
What does it look like?
Key features
Calculates pump power, head, and capacity using standard engineering equations.
Performs all engineering calculations without requiring an active internet connection.
How much does it cost?
The $2.99 flat fee targets professional users requiring a dedicated, offline engineering tool.
Velocity
Maintenance developmentUX improvementsperformanceShow more...
The app operates at a maintenance cadence, with only one release shipped in the last 41 days. Development is currently focused on incremental improvements, including UI/UX adjustments, performance optimizations, and the addition of unit conversion options. There is no evidence of a high-frequency release cycle or live-ops strategy. Future updates are expected to remain infrequent based on the current development pace.
Who built it?
Imran Pinjara
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Paint RAL NoUser Sentiment
What do users think recently?
Fresh user feedback skews upset.
How are ratings & reviews evolving?
What users say, by theme
- Functional failure where paid features remain inaccessible after purchase, preventing any actual app usage
1 of 1 recent reviews analyzed · limited sample
Read the full review analysisUnlock 1 more frustration theme, each backed by review evidence.
Access the full report for freeCompetition
Competitive landscape for Pump Calculator
How's the Productivity market?
Pump Calculator occupies a niche in the Productivity category as a paid, offline-first engineering tool. With a 1.0 rating across its total review count, the app currently fails to convert its professional utility promise into user satisfaction.
Read the market outlookThe rivals identified
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Access the full report for freeThe Analyst's Read
Key takeaways for Pump Calculator
Where is it heading?
The outlook is declining due to a total failure in the primary monetization path. Unless the purchase-gate is repaired, the app will continue to accumulate negative sentiment that prevents any future growth in the engineering utility space.
- Critical purchase-gate failure prevents feature access → immediate churn of paying users → permanent rating damage.
The SWOT
- Offline-first engineering logic reduces connectivity dependency
- Implement free-to-try model to restore trust
Next best moves
Audit purchase-gate logic because paid features fail to activate → restore product utility
+ 1 more prioritized moveThe counter-intuitive read
The app's offline-first design is a retention lever…
Read the full takeBottom line
Restoring basic functionality is the only path to recovery, as the current state of non-functional paid features makes the app a liability. Prioritizing a fix for the purchase-gate logic would stop the current churn of paying users.
Unlock 2 critical frictions, 1 market threat, 1 more prioritized move and the analyst’s take.
Access the full report for freeFAQ
Is Pump Calculator worth paying for?
Does Pump Calculator work without internet?
What should I do if I paid for the app but features are locked?
Sources
- [1] App Store, source
Report last updated