Comparison

Invoice Maker Estimate BillKit vs SimpleStock

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Invoice Maker Estimate BillKit

This app helps freelancers and small business owners create professional invoices, estimates, and bills quickly. It offers modern templates, client management, payment tracking, and optional AI tools to streamline workflows and ensure timely payments.

Highlights
  • Create professional invoices and estimates
  • Instant PDF exports
  • Client management
  • Payment tracking
  • AI-powered tools
  • Modern, customizable templates
  • Save reusable item templates
Features
Read full description

BillKit helps you create invoices, estimates, receipts, and bills in seconds. It is designed for freelancers, contractors, and small business owners who want a fast, simple, and professional way to manage their work and get paid on time. BillKit includes clean invoice templates, quick estimate creation, instant PDF exports, payment tracking, client management, and AI-powered tools to streamline your workflow. Create Invoices Quickly • Build professional invoices in minutes • Add items, taxes, discounts, and notes • Export invoices instantly as PDF Create Estimates and Quotes • Convert any estimate into an invoice with one tap • Send accurate quotes to clients quickly • Keep your workflow organised and efficient AI Tools (Optional) • Auto-fill invoice or estimate details • Scan receipts or invoices from images • Generate item descriptions automatically Modern Templates • Choose from clean and professional designs • Customise layout, colours, and details • Produce polished PDFs for your clients Client Management • Save customer information • Track invoice and quote history • Keep everything organised in one place Payment and Billing Tracking • Mark invoices as paid, unpaid, or overdue • View income summaries and billing history • Stay on top of your business cash flow Reusable Templates • Save item templates for faster invoicing • Create tax and discount templates • Reduce repetitive work and save time Easy Sharing and Exporting • Export and send invoices as PDF • Share through email, messaging apps, or any platform • Print or download effortlessly Suitable For • Freelancers • Contractors and trades • Designers and developers • Consultants • Small business owners • Service providers • Anyone who needs fast invoicing or estimating Private and Secure BillKit stores your data safely on your device using SwiftData and iCloud support. Your business information remains private and under your control. Why Choose BillKit? BillKit reduces the time you spend creating invoices and estimates, helping you focus on your work and get paid faster. Download BillKit and create your first invoice or estimate in under a minute. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula Privacy Policy: https://www.beemur.com/billkit/privacy Website: https://www.beemur.com

About

SimpleStock

Features
Read full description

Struggling with lost inventory, messy spreadsheets, and time-consuming stock checks? Take full control of your business with SimpleStock! SimpleStock is the ultimate offline inventory management and sales tracking app designed for small businesses, retail shops, and online sellers. Fast, intuitive, and 100% offline, SimpleStock lets you manage your entire catalog right from your device. Your data stays securely on your phone—no internet connection or account registration required! KEY FEATURES: REAL-TIME INVENTORY TRACKING: Easily add, edit, and organize your products. Keep track of stock-in, stock-out, and current inventory levels with absolute precision. LIGHTNING-FAST BARCODE SCANNER: Turn your smartphone into a professional barcode and QR code scanner. Find items and process transactions in seconds. LOW STOCK ALERTS: Never run out of your best-selling items! Set custom minimum stock levels and get instant visual alerts when it’s time to reorder. POWERFUL SALES & PROFIT REPORTS: Track your daily and monthly transactions. View comprehensive reports on revenue and profit margins to make smarter business decisions. GLOBAL CURRENCY SUPPORT: Fully customizable formatting. Choose your local currency and decimal settings for a native financial experience. SECURE BACKUP & RESTORE: Export your entire database as a secure ZIP/SQLite file. Safely back up your data to Google Drive, Email, or transfer it to a new device effortlessly. 100% OFFLINE & PRIVATE: Your business data is yours. Everything is stored locally on your device for maximum privacy and lightning-fast performance. WHO IS IT FOR? Whether you run a retail store, a small warehouse, a boutique, or an online shop, SimpleStock is built to simplify your daily operations and boost your productivity. Download SimpleStock today and experience the smartest way to manage your inventory! Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Invoice Maker Estimate BillKit4 screens
SimpleStock4 screens

Verdict

The call

The clearest difference is update cadence: Invoice Maker Estimate BillKit at every 2 days against SimpleStock's every 3 weeks. SimpleStock's advantage is iOS requirement (15.6 vs 18.5). On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Invoice Maker Estimate BillKit sells 3 in-app purchases, starting at $7.99 per 7 days and SimpleStock sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Invoice Maker Estimate BillKit ships an update every 2 days, SimpleStock every 3 weeks. The most recent releases landed on October 24, 2026 and October 16, 2026 respectively.

Scorecard2 real differences · 7 level
Invoice Maker Estimate BillKit versus SimpleStock: the parameters behind the verdict, then further details
ParameterInvoice Maker Estimate BillKitSimpleStock
PriceFreeFree
Rating4.5 (2 ratings) — better—
Number of ratings2 — better—
Update frequencyEvery 2 days — betterEvery 3 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS18.515.6 — better
Further details — not scored
Size18 MB32 MB
Age rating4+4+
DeveloperBeemurQuach Bao Chau

In-app purchases

3 purchases

Invoice Maker Estimate BillKit

Subscriptions2
  • Bill Kit Weekly3 Days trial$7.997 Days
  • Bill Kit Yearly$34.991 Year
One-time1
  • Bill Kit Lifetime$79.99
3 purchases

SimpleStock

Subscriptions2
  • Pro Monthly$1.991 Month
  • Pro Annual$4.991 Year
One-time1
  • Lifetime Unlock$4.99

Questions

Is Invoice Maker Estimate BillKit free?
Invoice Maker Estimate BillKit is free to download, with in-app purchases available.
Is SimpleStock free?
SimpleStock is free to download, with in-app purchases available.
Do Invoice Maker Estimate BillKit or SimpleStock have ads?
Neither Invoice Maker Estimate BillKit nor SimpleStock shows ads.
Which is updated more often, Invoice Maker Estimate BillKit or SimpleStock?
Invoice Maker Estimate BillKit ships an update every 2 days, and SimpleStock every 3 weeks. Most recently, Invoice Maker Estimate BillKit was updated on October 24, 2026 and SimpleStock on October 16, 2026.

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