Calculator 42 is a productivity utility for iOS that provides a persistent calculation history log for students and professionals.
The App DNA
What makes this app unique?
It removes the friction of re-entering multi-step expressions by saving every calculation in a searchable, reusable journal.
For Students and professionals requiring a persistent log of mathematical calculations for reference or reuse.
What does it look like?
Key features
Saves all past expressions and results in a journal for reuse or copying.
Long-press on history items to trigger a menu for copying, deleting, or re-using data.
How much does it cost?
The app offers full feature access for free, with a PRO plan available via in-app purchase.
Velocity
Dormant developmentopaqueShow more...
Calculator 42 with History PRO has been inactive for 1,543 days. With no updates or feature releases in over four years, the development momentum is non-existent. The project appears to be in a zombie state, as no new builds have been deployed to the store since the initial version history provided.
Who built it?
User Sentiment
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 42 with History PRO
How's the Productivity market?
Calculator 42 maintains a 4.6-star rating across 74 reviews, though the lack of updates since May 2022 limits its competitive standing in the productivity category.
Read the market outlookThe rivals identified
Unlock the deeper market read.
Access the full report for freeThe Analyst's Read
Key takeaways for Calculator 42 with History PRO
Where is it heading?
The productivity calculator market is consolidating around OS-integrated tools, leaving standalone apps like Calculator 42 in a niche position. Without a clear update cadence, the app remains exposed to platform-level changes that could break its core functionality.
- The four-year development gap suggests a maintenance-only posture, which limits the potential for new user acquisition in a crowded category.
The SWOT
- Persistent journal enables multi-step workflow reuse
- Context menu interaction allows granular history management
- Implement cloud-sync for history logs
Next best moves
Audit codebase for iOS compatibility because the app has not been updated since May 2022 → maintain platform stability
The counter-intuitive read
The lack of updates is a feature for users who prioritize a static…
Read the full takeSince the last report: The competitive outlook for Calculator 42 shifted from declining to stable, as the analysis now frames the app as a niche, static utility rather than a failing growth-focused product. This pivot acknowledges the app's long-term maintenance state while refining the threat landscape to focus on OS-native competition.
Bottom line
Calculator 42 serves as a stable utility for users needing persistent logs, but the four-year development gap makes it a legacy asset that requires a maintenance audit to ensure continued platform compatibility.
Unlock 2 critical frictions, 1 market threat and the analyst’s take.
Access the full report for freeFAQ
Is Calculator 42 free to use?
Does Calculator 42 save my past calculations?
Is Calculator 42 still being updated?
Sources
- [1] App Store, source
Report last updated