Avast One
8.9#1 in antivirus softwareFree planFree planAndroidiOSExtensionmacOS
VisitAvast One vs Bitdefender Antivirus Plus
Bitdefender Antivirus Plus
7.9#18 in antivirus softwareFrom $24.99 a yearAndroidiOSmacOSWindows
VisitWhat both publish
| Fact | Avast One | Bitdefender Antivirus Plus |
|---|---|---|
| Company history | Avast says Pavel Baudiš and Eduard Kučera founded Alwil in Prague in 1988, renamed it Avast Software in 2010 and joined Gen in 2022. | Bitdefender's company page describes its cybersecurity work as dating from 2001. |
| Device limit | 30 | 3 |
| Founded | 1988 | 2001 |
| Free plan | Yes | Yes |
| Headquarters | Prague, Czech Republic | Bucharest, Romania |
| Protection scope | complete security | internet security |
| Ransomware protection | The free tier includes ransomware protection that restricts untrusted apps from changing protected folders. | Yes |
| Support | Official help provides contact options, account help, forums and an academy. | The product page says expert assistance is available 24/7. |
| Supported platforms | Windows,macOS,Android,iOS | Windows,macOS,iOS,Android |
Avast One plans
- BasicPriced on request
- Basic—
- Silver Device Protection module$2.99 a month
- Gold$6.99 a month
- Platinum$9.99 a month
- Free AntivirusFree
Bitdefender Antivirus Plus plans
- Antivirus Plus, 1 device$24.99 a year
- Antivirus Plus, 3 devices$29.99 a year
- Bitdefender Antivirus Plus Multiplatform — 1 device$24.99 a year
- Bitdefender Antivirus Plus Multiplatform — 3 devices$29.99 a year
Pick Avast One if…
You want what its maker publishes above — check its page for the details.
Pick Bitdefender Antivirus Plus if…
It suits people who want security coverage across Windows PCs, Macs, and mobile devices without needing cybersecurity expertise. The listed plans cover one or three devices.