Report updated May 19, 2026
Cuspart: Calculator
For students, engineers, and general users requiring a scientific calculator with a customizable interface.
Cuspart: Calculator is an established utilities app that is completely free. With a 5.0/5 rating from 1 reviews, it shows polarized user reception.
What is Cuspart: Calculator?
Cuspart is a scientific calculator for iOS, featuring customizable themes and basic arithmetic tools for students and engineers.
Users hire Cuspart for a clean, one-handed calculation experience that avoids the visual clutter of professional-grade scientific tools, so the app must retain this simplicity while adding core utility to prevent churn.
Current Momentum
v1.33 · 11mo ago
Maintenance- Last major update May 2025.
- No new features added recently.
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?
Review, edit, and clear past calculation entries via a dedicated log interface
Selection of dozens of professionally designed palettes for interface personalization
Instant access to mathematical constants including pi and e for scientific computations
How much does it cost?
- Free version with no listed IAP or subscription gates
The app operates as a free utility with no visible monetization gates or subscription tiers.
Who Built It?
Mustafa Tolga DALBUDAK
Providing specialized utility and productivity tools for professionals and students. Focused on offline-first functionality for everyday tasks.
Portfolio
13
Apps
Who is Mustafa Tolga DALBUDAK?
Cuspart operates as a high-volume utility studio that prioritizes offline accessibility and niche-specific toolsets over platform-wide ecosystem integration. By targeting fragmented segments like e-commerce accounting and specialized engineering conversions, they capture users who require reliable, standalone tools without the overhead of cloud-based dependencies. Their strategy relies on a broad, horizontal portfolio that functions as a utility layer, though the lack of cross-app synchronization or unified user accounts limits their ability to build a cohesive brand ecosystem.
Who is Mustafa Tolga DALBUDAK for?
- Students
- Independent e-commerce sellers
- Professionals seeking offline-capable tools for daily calculations
- Conversions
Portfolio momentum
Released 25 updates across the portfolio in the last 6 months, demonstrating a high-frequency development cycle across their active app base.
What other apps does Mustafa Tolga DALBUDAK make?
What do users think recently?
Analysis in progress, available soon
What is the competitive landscape for Cuspart: Calculator?
How's The Utilities Market?
Market outlook for this category
Available very soon
The rivals identified
The Nemesis
Head to Head
The target must prioritize building a robust history management system and adding real-time data integrations to neutralize the nemesis's utility advantage.
What sets Cuspart: Calculator apart
Provides a more focused, streamlined interface for users who find feature-heavy calculators overwhelming.
Offers a cleaner, modern aesthetic that appeals to users prioritizing simplicity over complex utility bloat.
What's Calculator⁼'s Edge
Extensive history tape functionality provides a superior workflow for professional users managing long calculation chains.
Integrated live currency conversion creates a sticky utility that keeps users returning for daily financial tasks.
Contenders
Offers Apple Watch integration, allowing users to perform quick calculations without reaching for their iPhone.
Includes a Today Extension widget for instant access to calculation tools directly from the device home screen.
Provides unlimited precision arithmetic, catering to users who require exact results for complex scientific work.
Includes audible feedback, offering a unique accessibility layer that enhances the user experience for specific demographics.
Features a smart history function that intelligently organizes past inputs for faster retrieval and reuse.
Includes dedicated currency and percentage modes, providing immediate value for retail and financial quick-math tasks.
Aspect Ratio Pro
★4.0 (1)App ahead GmbH
This app competes by targeting a specific niche of the calculator market, focusing on ratio-based math that overlaps with general utility needs.
Specializes in rule-of-three calculations, providing a dedicated workflow that general calculators often lack.
Targets professional designers and engineers with a specific use-case focus rather than broad arithmetic.
Peers
Includes a home screen widget for rapid access to frequently used conversion categories and calculations.
Features an offline currency converter, providing essential financial utility without requiring data connectivity.
Provides a library of specialized engineering units that are not typically found in standard calculator apps.
Offers a completely ad-free experience, which serves as a strong value proposition for professional users.
Allows for complex expression input, enabling users to perform math directly within the conversion interface.
Supports user-defined units, providing a high degree of customization for specialized professional or hobbyist needs.
Supports full offline functionality, ensuring users can perform conversions without needing an active internet connection.
Displays multiple units simultaneously, reducing the number of taps required to compare different measurement standards.
The outtake for Cuspart: Calculator
Strengths to defend, gaps to attack
Core Strengths
- Customizable color palettes provide a visual identity lacking in standard utilities
- Large touch targets enable one-handed use for mobile-first workflows
Critical Frictions
- Single-review count indicates near-zero market penetration
- Lack of persistent cloud-sync prevents cross-device workflow continuity
Growth Levers
- Education-focused partnerships could provide a B2B distribution channel
- Integration with Apple Watch would neutralize the CalcFast competitive advantage
Market Threats
- Impala Studios' market presence and live financial data integrations create a high barrier to entry
- Category leaders with persistent history tapes drain daily usage
What are the next best moves?
Ship persistent history tape because it is the primary retention gap against Calculator⁼ → increase daily active usage
Calculator⁼ uses a persistent history tape to drive daily return, a feature currently missing in Cuspart.
Trade-off: Pause the color-theme expansion sprint — history-tape utility has a higher impact on retention.
Integrate Apple Watch support because CalcFast uses it to capture on-the-go power users → improve competitive parity
CalcFast uses wearable integration to challenge the target's utility positioning.
Trade-off: Deprioritize the Constants Library expansion — wearable reach is a higher-value acquisition lever.
A counter-intuitive read
The app's lack of monetization is not a weakness but a necessary strategy to build an install base in a category where users are already locked into established, feature-rich incumbents.
Feature Gaps vs Competitors
- Persistent history tape (available in Calculator⁼ but absent here)
- Live currency conversion (available in Calculator⁼ but absent here)
- Apple Watch integration (available in CalcFast but absent here)
Key Takeaways
Cuspart offers a clean, accessible interface that appeals to casual users, but it lacks the persistent history and platform integrations required to compete with category leaders, so the PM must prioritize a persistent history tape to drive retention.
Where Is It Heading?
Mixed Signals
The utility calculator market is consolidating around apps that offer persistent history and cross-platform integration, leaving Cuspart exposed as a lightweight alternative. Without adding core utility, the app will struggle to convert casual users into a sticky base, so the PM must shift from aesthetic updates to functional retention loops.
The lack of persistent history features forces power users toward rivals, which accelerates churn pressure into the next quarter.
Recent updates focused on maintenance, no new feature expansion suggests the app is currently in a stable, low-velocity state.