Calculator is a scientific math utility for Android and iOS that features live expression parsing, custom themes, and productivity tools.
The App DNA
What makes this app unique?
Users hire the app to perform complex scientific calculations with a personalized interface, replacing stock calculators that lack advanced function sharing and visual customization.
For Students and professionals who require a highly customizable, scientific calculator with productivity-focused features like timers and history tracking.
What does it look like?
Key features
Real-time calculation of complex nested expressions.
Custom math functions that can be shared with other users.
Extended mathematical tools available via in-app purchase.
How much does it cost?
Freemium model uses a free base app to drive volume, gating advanced scientific tools behind a one-time or subscription-based purchase.
Velocity
Maintenance developmentUX improvementsperformanceopaqueShow more...
The app exhibits a maintenance-level cadence, with the most recent release occurring over 13 months ago. Development activity is characterized by infrequent, minor stability updates across platforms. There is no evidence of new feature development or live operations, and the release notes remain consistently opaque. The current development trend is stagnant.
Who built it?
Oval Software Oy
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Name Acronym Generator AppUser Sentiment
What do users think recently?
Fresh user feedback skews mixed. Users appreciate simple and accurate calculation logic provides reliable utility for everyday math tasks, but report recent design changes removed critical features like the running sum display during typing.
How are ratings & reviews evolving?
What users say, by theme
- Simple and accurate calculation logic provides reliable utility for everyday math tasks
- Recent design changes removed critical features like the running sum display during typing
85 of 85 recent reviews analyzed · high confidence · Mixed overall
Read the full review analysisUnlock 1 user request, each backed by review evidence.
Access the full report for freeCompetition
Competitive landscape for Calculator´
How's the Productivity market?
Calculator maintains a high rating of 4.35 on Android with over 760,000 ratings, but the recent shift to subscription pricing creates friction against competitors like Calculator+.
Read the market outlookThe rivals identified
By Impala Studios
This app is the direct functional equivalent with massive scale and a high-velocity release cadence that directly threatens this app's market share.
- Maintains a high-frequency release cycle of 9 updates in six months to ensure platform compatibility
- Optimized for iPad-first workflows with extensive screen real estate utilization compared to this app
- Aggressive feature expansion strategy keeps the app relevant across diverse user segments and device types
Unlock the head-to-head verdict: where this rival wins, and where it loses.
Access the full report for freeThe Analyst's Read
Key takeaways for Calculator´
Where is it heading?
The scientific calculator market is consolidating around high-velocity incumbents, leaving Calculator exposed to churn if it continues to prioritize monetization over core workflow stability. The PM must address the recent UI regressions immediately to prevent further erosion of the user base.
- UI regressions in the latest update (failing notifications, disappearing tabs) erode the daily active habit, which compounds the rating drag.
- The shift to subscription pricing alienates legacy users, leading to negative sentiment that threatens the app's long-term retention.
The SWOT
- Live expression parsing enables complex nested math
- Shareable function links drive organic acquisition
- Deep UI customization increases user retention
- Untapped B2B education partnerships
- Lack of wearable integration in the category
- Expansion of unit conversion tools
Next best moves
Restore running sum display because it is the top-cited workflow regression → stabilize retention
+ 1 more prioritized moveThe counter-intuitive read
The app's #2 chart position is a liability…
Read the full takeFeature gaps
Real-time unit and currency conversion (available in ClevCalc but missing here) +1
Since the last report: The app shifted to a freemium subscription model and entered a maintenance development phase, resulting in negative sentiment due to UI regressions and pricing friction.
Bottom line
Calculator retains users through strong core utility, but the recent UI regressions and subscription shift threaten its market position, so the PM must prioritize restoring the running sum display to stabilize retention.
Unlock 3 critical frictions, 3 market threats, 1 more prioritized move and the analyst’s take.
Access the full report for freeReport last updated