Comparison

# Simple Invoice vs Shift Safe

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

Head to head
About

# Simple Invoice

Features
Read full description

Create and manage invoices easily on your smartphone or tablet. With an intuitive interface, anyone can create professional invoices in seconds. Simple and easy to use, suitable for businesses, freelancers, sole proprietors, shops, and personal use. Create invoices smoothly for products, services, projects, and client work. Create invoices on the go and complete everything from sharing to printing instantly. A perfect invoice maker app to improve productivity and simplify your billing workflow. ■ Features ・Intuitive Interface Clean and simple design. Create and edit invoices easily, even for first-time users. ・Quick Invoice Creation Enter basic information to generate invoices instantly. Save time and manage your billing work more efficiently. ・Flexible Layouts Choose from simple, standard, or detailed layouts. Create invoices that fit your needs. ・Item Management Add items, quantities, and prices with automatic total calculation. Taxes, discounts, and totals are calculated instantly. ・Invoice Information Add invoice date, due date, invoice number, and payment details. Manage important invoice information in one place. ・Payment Information Add payment methods, payment terms, or bank transfer details. Create invoices that match each transaction. ・Customization Freely edit titles, labels, and content. Create clean and professional invoices. ・Notes Add notes, terms, or additional details. Keep all necessary information together. ・Easy Printing Print directly from your smartphone or tablet. Output your invoices instantly when needed. ・Export & Share Export as PDF files and share via email or chat easily. Send invoices to customers or clients without hassle. ・Import Import saved data and continue editing anytime. Reuse past invoices to improve efficiency. ・Ready to Use No account required. Start using the app immediately after installation.

About

Shift Safe

Features
Read full description

Shift Safe is a workplace accountability platform built for Canadian hospitality and service teams. It brings scheduling, team communication, daily operations, and incident record-keeping into one place so managers and staff can run safer, smoother shifts. FOR WORKERS • Create your own Shift Safe profile card • Build a hospitality-focused work profile over time • Store certifications in one place • Access workplace training and development tools • Stay connected to your workplace schedule, updates, and team communication SCHEDULING • Managers can build and publish shifts • Employees are notified when schedules are posted • Built-in conflict visibility helps reduce scheduling issues • Live floor map lets managers assign sections and view the shift at a glance ON-SHIFT ALERTS & REMINDERS • Role-based alerts for shift tasks, line checks, and manager walks • Daily log reminders • Certification expiry reminders ACCOUNTABILITY & LOGGING • Manager Log for recording incidents and shift notes • Direct communication between staff and management • Clean PDF exports for workplace records DAILY OPERATIONS • 86 List to keep the team updated in real time • Team message board • Position and role management • Health and safety checks COMPLIANCE & HR • Tip-out receipt generation • Certification and compliance exports • Corrective action tracking • Workplace recordkeeping tools for owners and managers SMART CAPTURE • Use photos to support incident reports • Capture workplace documents and receipts for internal records Getting started is free. Create your personal account, then join your workplace with a code from your manager, or set up a new workplace as an owner.

Screenshots

# Simple Invoice4 screens
Shift Safe4 screens

Verdict

The call

The clearest difference is in-app purchases: Shift Safe at none against # Simple Invoice's 2. Shift Safe also leads on iOS requirement (13.0 vs 15.6). # Simple Invoice's advantage is update cadence (every 8 days vs every 4 months). On price, ads 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. # Simple Invoice sells 2 in-app purchases, starting at $1.99 per month. Shift Safe asks for nothing beyond the download.

UpkeepUpdate frequency

# Simple Invoice ships an update every 8 days, Shift Safe every 4 months. Both last shipped on October 31, 2026.

Scorecard3 real differences · 3 level
# Simple Invoice versus Shift Safe: the parameters behind the verdict, then further details
Parameter# Simple InvoiceShift Safe
PriceFreeFree
Update frequencyEvery 8 days — betterEvery 4 months
AdsNoNo
In-app purchasesYesNo — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.613.0 — better
Further details — not scored
Size48 MB4 MB
Age rating4+12+
DeveloperYUKI TANAIKEShift Safe Technologies Inc

In-app purchases

2 purchases

# Simple Invoice

Subscriptions2
  • Invoice Pro (Monthly)$1.991 Month
  • Invoice Pro (Annual)$18.001 Year
None

Shift Safe

No in-app purchases

Questions

Is # Simple Invoice free?
# Simple Invoice is free to download, with in-app purchases available.
Is Shift Safe free?
Shift Safe is free to download, with no in-app purchases.
Do # Simple Invoice or Shift Safe have ads?
Neither # Simple Invoice nor Shift Safe shows ads.
Which is updated more often, # Simple Invoice or Shift Safe?
# Simple Invoice ships an update every 8 days, and Shift Safe every 4 months. Most recently, # Simple Invoice was updated on October 31, 2026 and Shift Safe on October 31, 2026.

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