MobileMobile App DevelopmentNative Swift/Kotlin, cross‑platform Flutter & React Native, offline‑first and store‑ready
WebWeb DevelopmentNext.js, React, Node, APIs, and edge-ready performance with accessibility baked in
ProductMVP & Product DevelopmentDiscovery to launch: scope discipline, lean delivery, and instrumentation for learning
DesignUI/UX & Graphic DesignResearch-led UX, design systems in Figma, and brand assets that survive development
QualityQuality AssuranceTest strategy, automation, performance, and release gates integrated with CI/CD
PlatformDevOps & Cloud HostingIaC, Kubernetes, CI/CD, observability, and cost-aware operations on AWS, GCP, Azure

Case Studies Tools

Tools directory

Billing

Create Invoices Generate Estimates Create Receipts Discount Calculator Markup Calculator Project Cost Quote Calculator

Business / E-commerce

QR Code Generator Business Name Generator GST Invoice Formatter Price Calculator (Tax + Margin)Shipping Cost Calculator

Accounting

GST Calculator Currency Converter Revenue Forecast Loan Eligibility Calculator Profit Margin Calculator PF Calculator HRA Calculator EMI Calculator SIP Calculator Loan Prepayment Calculator

Expense

Expense Report Generator

Inventory

SKU Generator Purchase Order Generator Calculate Reorder Point Economic Order Quantity Break-even Point Calculator Inventory Turnover Ratio Packing Slip Generator Barcode Generator Wholesale Price Calculator

Document Converter Tools

Images to PDF PDF to Image PDF Compressor Merge PDF PDF to Word / Excel Word to PDF

Image Tools

Image Compressor Image Resizer Crop Image Convert Image (JPG ↔ PNG ↔ WEBP)Image to Base64 Add Watermark to Image Blur Image Image Background Remover

Video Tools

Video Compressor Video to MP3 Converter Trim Video Merge Videos

Developer Tools

JSON Formatter & Validator Base64 Encode/Decode URL Encoder/Decoder JWT Decoder Color Code Converter (HEX ↔ RGB)

Security Tools

Password Generator Password Strength Checker Hash Generator (MD5, SHA256)UUID Generator

Payroll

Income Tax Calculator Gratuity Calculator Statutory Bonus Calculator HRA Exemption Calculator EPS Pension Calculator NPS Calculator

Accounting

Loan Prepayment Calculator

Estimate tenure reduction or EMI reduction impact from one-time or staged loan prepayments.

Back to all tools

Tool Input

Outstanding AmountInterest Rate (% p.a.)Outstanding Tenure (Years)No of InstallmentsInstallment 1Prepayment Date

Tenure Reduced By

25 months

Your New Tenure

154 months

Total Interest Saved

₹11,74,997.43

EMI Payable

₹64,964.16

We build mobile, web, and cloud products with design, QA, and operations in one delivery rhythm.

Navigate

Home About Services Case Studies Contact Tools

Contact

staycoldsolution@gmail.com

+91 95586 93717

2080 Silver Business Point, VIP Circle, Uttran, Surat, Gujarat-394101

2026 staycold solution. All rights reserved.