Report updated Jun 2, 2026
Gross Margin Calc
For e-commerce merchants on platforms like eBay, Amazon, and Shopify, and sales professionals requiring quick financial margin calculations.
Gross Margin Calc is an established business app that is free with in-app purchases. With a 5.0/5 rating from 1 reviews, it shows polarized user reception.
What is Gross Margin Calc?
Gross Margin Calc is a financial utility for calculating mark-up, margin, and platform-specific selling prices on iOS and Android.
Users hire this app to eliminate manual math errors when calculating net profit across marketplaces with complex fee structures.
Current Momentum
v3.6 · 2mo ago
Active- Fixed product detail storage issues.
- Ships performance improvements in latest release.
What makes this app unique?
What Does It Look Like?
What Are The Key Features?
Configurable fee structures for eBay, Amazon, and Shopify to calculate required selling prices based on cost and margin
Calculates mark-up, margin, selling price, or cost price from any two input variables
Supports GST/VAT calculations on cost or sell price, plus inclusion of delivery charges
Zero advertisements or in-app purchases in the iOS version
How much does it cost?
- iOS: $3.99 one-time purchase
- Android: Free with ad support
Monetization is bifurcated by platform, using a $3.99 upfront purchase on iOS to capture value from professional users while utilizing ad-inventory on the Android version.
Who Built It?
Providing specialized utility tools for business calculations and sports performance tracking. Helping professionals and athletes streamline data-driven tasks.
Portfolio
7
Apps
What other apps does Ed Stivala make?
Explore the full Ed Stivala report
Portfolio breakdown, audience, momentum, and every app published by Ed Stivala.
What do users think recently?
Analysis in progress, available soon
View the full user-sentiment analysis
Mood gauge, ratings & review-volume history, every praise / complaint / request, and sentiment over time.
What is the competitive landscape for Gross Margin Calc?
How's The Business Market?
How does it evolve in the Business market?
The app holds the #92 Paid position in the US Business category on iOS. The divergence between the $3.99 iOS price and the ad-supported Android model signals a strategy to capture professional value on Apple hardware while monetizing casual traffic via ads on Android.
Rank progression
4 active rankings tracked — 30-day window
Which niche is Gross Margin Calc in?
to calculate profit margins and pricing
Explore the full Budgeting Calculators niche
Every app in this space — 63 tracked, the niche's live rankings, and Marlvel's editorial take on the job-to-be-done.
The rivals identified
Nemeses(1)
Directly targets the same SMB/freelancer audience with a focus on financial documentation and margin-adjacent workflows.
Differentiators
- Integrates full invoicing and estimate creation workflows directly into the core financial calculation experience.
- Maintains a high release cadence of 9 updates in six months, indicating rapid feature iteration.
Same space(6)
Platform-specific tool that includes built-in selling and fee estimation features for the eBay marketplace.
Differentiators
- Provides native fee calculators that are always current with the platform's changing commission structures.
- Offers a massive user base and integrated shipping label generation that simplifies the entire selling process.
Adjacent tool used by merchants to calculate return on ad spend, a critical component of gross margin.
Differentiators
- Enables real-time tracking of customer acquisition costs which directly impacts the merchant's net margin.
- Delivers high-frequency updates to match the rapidly changing landscape of digital advertising performance metrics.
Adjacent accounting-focused tool that addresses the broader financial management needs of the target audience.
Differentiators
- Connects margin calculations to actual payroll and labor cost data for more accurate profitability analysis.
- Provides enterprise-grade financial reporting that scales far beyond the capabilities of a simple calculator.
Adjacent business tool serving the same merchant demographic with integrated financial reporting capabilities.
Differentiators
- Provides unified inventory and margin reporting across both physical retail and online storefront channels.
- Offers deep integration with third-party apps that automate complex tax and shipping cost calculations.
Adjacent financial tool that captures the transaction-level margin data at the point of sale.
Differentiators
- Automates margin tracking by syncing directly with real-time sales data and payment processing fees.
- Leverages a comprehensive business dashboard that provides deeper financial insights than a standalone calculator.
Provides platform-specific margin tools for the largest e-commerce marketplace, serving the target's core user base.
Differentiators
- Offers native integration with Amazon's proprietary fee structures and real-time inventory management data.
- Provides a closed-loop ecosystem for sellers that makes third-party standalone calculators redundant for Amazon-only merchants.
New entrants(1)
Rapidly emerging platform-specific tool capturing the new wave of social commerce sellers.
Differentiators
- Integrates social video performance metrics directly into the seller's financial and operational management dashboard.
- Aggressive release cadence of 10 updates in six months signals a focus on rapid feature expansion.
Compare Gross Margin Calc against every rival
All rivals in one side-by-side table — identity, store metrics, ratings & sentiment, and strategic intel — plus a head-to-head page for each.
The outtake for Gross Margin Calc
Strengths to defend, gaps to attack
Core Strengths
- Platform-specific fee modeling establishes category authority for e-commerce sellers
- Ad-free iOS experience creates a distraction-free environment for professional users
- Multi-variable calculation logic provides a core utility loop for daily financial tasks
Critical Frictions
- Android version relies on ad-support while iOS is paid, creating a fragmented brand experience
- No cloud-sync functionality limits multi-device professional workflows
- Limited social proof with only 1 rating on iOS
Growth Levers
- Develop B2B partnerships with e-commerce coaching platforms for distribution
- Add cloud-save functionality to improve retention for multi-device power users
Market Threats
- Platform-native tools like Amazon Seller and eBay provide real-time fee updates that a third-party calculator cannot match
- Rapid feature iteration by rivals like Bookipi creates a feature-gap risk
What are the next best moves?
Ship cloud-sync functionality because multi-device usage is a standard expectation for professional financial tools → increase retention
Lack of cloud-save is a friction point for professional users managing data across multiple devices.
Trade-off: Push the Android UI refresh to Q3 — cloud-sync has a higher impact on professional retention.
Unify monetization model by offering a paid ad-free tier on Android because the current bifurcated model fragments brand perception → improve brand consistency
The current split between paid iOS and ad-supported Android creates a disjointed user experience.
Trade-off: Pause the ad-inventory optimization sprint — brand consistency is critical for long-term professional trust.
A counter-intuitive read
The app's biggest threat is not a rival calculator, but the increasing integration of fee-estimation tools directly into marketplace seller dashboards, making standalone calculators obsolete.
Feature Gaps vs Competitors
- Integrated invoicing and estimate creation (available in Invoice Maker & Estimate App)
- Real-time inventory management integration (available in Amazon Seller)
Key Takeaways
Gross Margin Calc provides essential utility for e-commerce sellers, but its fragmented monetization and lack of cloud-sync limit its professional appeal, so the PM should prioritize cross-platform data parity to defend against platform-native tools.
Where Is It Heading?
Stable
The market for standalone margin calculators is consolidating as marketplaces integrate their own financial tools. Gross Margin Calc remains stable but exposed, so long-term viability hinges on moving beyond simple math into workflow integration.
Recent updates focused on stability and bug fixes, indicating a maintenance-mode posture rather than aggressive feature expansion.
Platform-native tools like Amazon Seller are increasing their feature depth, which directly drains the utility value of standalone calculators.