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Office 365 vs Office 2021: Which One to Buy in 2025?

✅ Summary: Quick Decision Guide

FeatureOffice 365 (Microsoft 365)Office 2021
PricingSubscription (monthly/yearly)One-time payment
Apps IncludedWord, Excel, PowerPoint, Outlook + more (always updated)Word, Excel, PowerPoint, Outlook (static versions)
Cloud Storage1TB OneDrive per userNone
Device Limit5 devices per user1 device
Best ForOngoing users who prefer cloud + mobileOffline or budget users
License DurationExpires unless renewedLifetime

🧠 What’s the Difference Between Office 365 and Office 2021?

Let’s break it down in real-world terms, not corporate jargon.

  • Office 365 (Microsoft 365) is a subscription-based product. You pay monthly or yearly, and in return, you get:
    • Always the latest version of Word, Excel, etc.
    • 1TB of cloud storage on OneDrive
    • Access to mobile apps and browser-based editing
    • 5-device installation limit (PCs, Macs, phones, tablets)
  • Office 2021 is a one-time purchase. You buy it once, and it’s yours forever. However:
    • You get only one installation
    • No updates beyond the 2021 version
    • No OneDrive cloud storage
    • Ideal for offline or basic users

💰 Pricing Comparison in India (2025)

PlanPrice (Approx)Delivery
Office 365 Personal (1 user/year)₹1,999–₹3,999Digital Key
Office 365 Family (6 users/year)₹4,999–₹5,999Digital Key
Office 2021 Pro Plus₹349 (from keys-shop.in)Instant

Note: Retail pricing may be much higher via Microsoft directly (₹9,199+ for Office 2021).


🎯 Which One Should You Buy?

👉 Choose Office 365 if:

  • You use multiple devices
  • Need cloud backups & online collaboration
  • Want ongoing feature updates
  • Work in teams or manage a family account

👉 Choose Office 2021 if:

  • You’re on a tight budget
  • Only need the core apps (Word, Excel, PowerPoint)
  • Prefer a one-time payment
  • Don’t care about updates or cloud storage

📦 What We Offer on Keys-Shop.in

ProductPriceLicense TypeDelivery Time
Office 365 (1 Year)₹1,499–₹2,499Retail15 mins
Office 2021 Pro Plus₹349Lifetime15 mins

All keys are genuine, backed by our guarantee, and come with activation support.


🧠 FAQs – Office 365 vs Office 2021

Q: Is Office 2021 a one-time payment?
✅ Yes, you pay once and can use it forever.

Q: Can I use Office 365 offline?
✅ Yes, apps install on your PC, but you must connect every 30 days to renew license validation.

Q: Can I upgrade Office 2021 later?
🚫 No, it’s fixed. You’ll need to purchase a newer version later.


🔗 Final Verdict: Still Confused?

If you prefer flexibility and the latest tools, go for Office 365.
If you want a budget, set-it-and-forget-it solution, Office 2021 is your winner.


👉 Buy now on keys-shop.in and get instant delivery in under 15 minutes.

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