Report updated May 5, 2026
Rapid & Quick Calculator Pro
For users requiring a specialized, high-utility calculator for retail, household budgeting, and financial tasks.
Rapid & Quick Calculator Pro is an established finance app that is a paid app. With a 4.4/5 rating from 764.8K reviews, it shows polarized user reception. Users particularly appreciate core calculator functionality provides reliable and fast arithmetic support for daily shopping and basic tasks, though post-update removal of the running total feature disrupts established workflows for power users and accountants remains a common concern.
What is Rapid & Quick Calculator Pro?
Rapid & Quick Calculator Pro is a specialized financial utility for retail and household budgeting on iOS and Android.
Users hire this app to manage complex retail math like tax-inclusive pricing and history-based auditing, which standard system calculators lack.
Current Momentum
v6.7 · 2d ago
Maintenance- Updated minimum requirement to iOS 17.6
- Refined translations across all supported languages
- Support for iOS 26 added
Active Nemesis
Calculator₊
By Impala Studios
Other Rivals
Rating Pulse 🇺🇸
Recent User MoodAI-powered deep analysis surfacing high-signal insights. Still in beta, accuracy improves daily. For informational purposes only.
What makes this app unique?
What Does It Look Like?
How Is The App's Momentum Right Now?
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What Are The Key Features?
Logs past calculations for review and reuse via single-tap interaction
Switches between tax-included and excluded modes with swipe-based rate selection
How much does it cost?
- Pro version at $3.99 USD (iOS)
The app utilizes a direct paid-purchase model on iOS, positioning itself as a utility tool without recurring subscription fees.
Who Built It?
KinkumaDesign
Providing high-utility finance and productivity tools for users seeking customizable alternatives to stock mobile applications.
Portfolio
4
Apps
Who is KinkumaDesign?
KinkumaDesign has carved out a niche in the utility sector by offering feature-dense alternatives to native mobile calculators and note-takers. Their strategic advantage lies in deep UI customization and functional transparency—such as history tapes and hierarchical organization—that cater to power users dissatisfied with stock OS simplicity. The primary strategic signal is the significant engagement disparity between their flagship finance utility and their productivity suite, suggesting a potential consolidation toward specialized arithmetic tools.
Who is KinkumaDesign for?
- Power users
- General consumers seeking functional
- Highly customizable alternatives to standard system calculators
- Note apps
Portfolio momentum
The publisher maintains a low release cadence with 1 update in the last 6 months and 25% of the portfolio currently classified as active.
What other apps does KinkumaDesign make?
What do users think recently?
High confidence · Latest 100 of 133 total reviews analyzed · Based on 133 reviews. Signal may be noisy.
How did the latest release land?
What is the recent mood?
Recent user voice shows a mixed sentiment. Users appreciate core calculator functionality provides reliable and fast arithmetic support for daily shopping and basic tasks, but report post-update removal of the running total feature disrupts established workflows for power users and accountants.
What Users Love
What Frustrates Users
What Users Want
What is the competitive landscape for Rapid & Quick Calculator Pro?
How's The Finance Market?
How does it evolve in the Finance market?
The app sits at #94 Paid in its category, with an 18-rank drop this week. The gap between its high rating and recent negative sentiment signals that legacy user loyalty is fraying due to the latest update.
| Country | Category | Chart | Rank | Change |
|---|---|---|---|---|
| 🇺🇸 US | Finance | iOSPaid | #94 | ▼18 |
The rivals identified
The Nemesis
- -
Users are happier — sentiment 45/100 vs 35
- -
Higher rated at 4.7★ vs 4.4★
- -
Maintains a high-frequency update cycle with nine releases in the last six months alone.
Peers
Deep OS-level integration provides instant access via Control Center, which third-party apps cannot replicate.
Zero-friction user experience relies on native design patterns that feel familiar to every iOS user.
Soulver 3
★4.9 (396)Zac Cohan
⚡Targets the prosumer segment by blending natural language processing with traditional calculation interfaces.
Uses natural language input to solve complex math problems, appealing to users who dislike standard keypads.
Positions itself as a productivity tool rather than a simple utility, justifying a premium price point.
Panecal Scientific Calculator
★4.8 (69.3K)Noriyasu Kutsuzawa
🔧Serves the specialized scientific and engineering niche that requires advanced mathematical functionality.
Provides advanced scientific notation and formula editing capabilities that exceed standard everyday calculator requirements.
Targets a technical audience that prioritizes precision and complex function support over simple bill splitting.
New Kids on the Block
Focuses on educational utility positioning to capture the student demographic through specialized math features.
Rapid iteration cycle allows for quick implementation of user feedback compared to legacy calculator apps.
The outtake for Rapid & Quick Calculator Pro
Strengths to defend, gaps to attack
Core Strengths
- History tape reuse reduces friction for repeat financial tasks
- Sales tax toggle drives high-intent usage in retail contexts
- iPad multitasking support increases utility for power-user workflows
Critical Frictions
- Running total removal disrupts professional accounting workflows
- UI scaling issues cause elements to exceed screen boundaries
- Technical instability forces unexpected app closures during use
Growth Levers
- Currency converter integration addresses top-requested professional tool gap
- Home screen widget implementation improves access speed for frequent tasks
Market Threats
- Calculator₊ high-frequency update cycle captures market share
- System-level OS integration makes default calculators more accessible
- Natural language input in Soulver 3 attracts prosumer segment
What are the next best moves?
Restore running total visibility because its removal is the #1 complaint theme → stabilize power-user retention.
Sentiment analysis identifies the running total removal as the primary driver of recent negative reviews.
Trade-off: Pause the currency converter sprint — user retention is more critical than new feature expansion.
Audit UI scaling logic because oversized elements are the #2 complaint theme → reduce churn.
Reports of UI elements exceeding screen boundaries are eroding the app's minimalist design reputation.
Trade-off: Same-quarter capacity available — no major lever displaced.
A counter-intuitive read
The app's #94 rank is a safety net; its niche utility for retail tax-toggling creates a higher switching cost than the broader, more generic calculators that currently dominate the top charts.
Feature Gaps vs Competitors
- Currency conversion (available in stock calculators but missing here)
- Natural language input (available in Soulver 3 but missing here)
- Memory functions (available in Panecal Scientific Calculator but missing here)
Key Takeaways
The app provides specialized financial utility that standard calculators lack, but the recent removal of the running total display is driving churn, so the team must prioritize restoring this feature to protect the prosumer base.
Where Is It Heading?
Declining
The market for utility calculators is consolidating around high-frequency update cycles, leaving this app exposed as it shifts from feature expansion to stability-focused maintenance. The recent decline in rank and sentiment suggests that the current update cycle is failing to meet user expectations for professional-grade financial tools.
The removal of the running total feature disrupts professional workflows, leading to a sharp decline in sentiment and increased churn pressure.
UI scaling regressions in the latest update cause interface elements to exceed screen boundaries, which compounds the negative sentiment on Android.