Calculator × is a utility app for iOS and iPadOS that provides a persistent tape log and multi-line formula evaluation for professional calculation tasks.
The App DNA
What makes this app unique?
The app replaces the default system calculator to remove the friction of losing calculation history, which allows users to audit and reuse numerical data across workflows.
For iPad and iPhone users seeking a functional, history-aware alternative to the default system calculator.
What does it look like?
Key features
Persistent storage of calculation history, increasing the cost of switching to basic alternatives.
Single-line input for complex expressions, reducing time-to-result for professional tasks.
Support for Split View and Slide Over, integrating the app into professional workflows.
How much does it cost?
The app is currently offered as a free utility with no visible subscription or IAP gates, which limits revenue capture from power users.
Velocity
Dormant developmentopaqueShow more...
Calculator × has been inactive for 1014 days, indicating a complete cessation of development. The single release in the analyzed window provided only generic bug fixes and improvements. There is no evidence of ongoing maintenance or feature updates, categorizing the app as a zombie project.
Who built it?
DOUBLE U s.r.o.
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What do users think recently?
How are ratings & reviews evolving?
Not enough recent reviews to extract reliable themes yet.
Read the full review analysisCompetition
Competitive landscape for Calculator ×
How's the Utilities market?
Calculator × holds a niche position in the Utilities category, anchored by a 4.5-star rating across 143 reviews. The lack of updates for over 1,000 days signals a stagnant market position relative to active competitors.
Read the market outlookThe rivals identified
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Access the full report for freeThe Analyst's Read
Key takeaways for Calculator ×
Where is it heading?
The utility calculator market is consolidating as system-level tools integrate previously premium features. Calculator × is currently exposed due to its long-term maintenance status, which will likely lead to a decline in relevance unless the team pivots to a monetization model that justifies active development.
- The 1,014-day update gap indicates the app is in maintenance mode, which will lead to gradual churn as iOS system tools evolve.
- The current free-only model fails to monetize the professional user base, which limits the resources available for future feature development.
The SWOT
- Persistent tape log creates high switching costs for users requiring audit trails.
- Introducing a Pro tier could capture revenue from the professional user segment.
Next best moves
Audit the user base for willingness-to-pay because the app currently lacks any monetization despite professional-grade features → unlock revenue stream
+ 1 more prioritized moveThe counter-intuitive read
The lack of updates is not just a weakness…
Read the full takeBottom line
Calculator × provides a functional utility, but its 1,014-day update gap leaves it vulnerable to system-level competition. Introducing a monetization tier would unlock value from its professional user base, provided the team can restore confidence through basic maintenance.
Unlock 1 critical friction, 1 market threat, 1 more prioritized move and the analyst’s take.
Access the full report for freeFAQ
Is Calculator × free to use?
Does Calculator × work on iPad?
What makes Calculator × different from the default calculator?
Sources
- [1] App Store, source
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