In Bulgaria, businesses and individuals are increasingly switching from traditional phone systems to VoIP calling apps. Whether you run a startup in Sofia, manage a team in Plovdiv, or have a small office in Varna, VoIP technology provides cost-effective, reliable, and flexible communication solutions.
VoIP, or Voice over Internet Protocol, allows calls over the internet instead of standard landlines. With Bulgaria’s expanding broadband coverage and growing remote work culture, VoIP adoption is accelerating rapidly.
This guide will cover how VoIP works, the top apps available in Bulgaria, pricing, benefits, setup tips, pros and cons, and recommendations for both personal and business use.
What is a VoIP Calling App?
A VoIP calling app converts voice into digital data packets and transmits them over the internet. Unlike traditional PSTN phone lines, calls are routed digitally, offering:
- Cost savings for local and international calls
- Mobility across devices: smartphone, tablet, or desktop
- Advanced features like call recording, voicemail-to-email, and HD voice
Popular apps in Bulgaria include RingCentral, 8×8, Zoom Phone, NFON, Aircall, and MyNetFone Bulgaria.
How Does VoIP Work in Bulgaria?
Here’s the process:
- Speak into your device’s microphone.
- The app converts your voice into digital packets.
- Packets are transmitted via broadband or mobile data.
- The recipient’s device reassembles packets into sound.
Bulgaria’s internet infrastructure, especially in urban areas like Sofia, Plovdiv, and Varna, supports high-quality VoIP calls. Fiber-optic networks and fast LTE/5G coverage ensure minimal latency and packet loss.
Compliance factors:
- Data hosting & GDPR: Ensure your provider stores data in the EU to comply with GDPR.
- Number provisioning: For Bulgarian numbers (+359), the provider must comply with BTTK (Bulgarian Communications Regulation).
Why Bulgarian Businesses Are Switching to VoIP
According to BTTK, VoIP adoption in Bulgarian SMEs grew by 12% in 2024. Businesses are motivated by:
- Cost savings: Up to 70% cheaper than traditional landlines
- Remote work capability: Employees can work from home or abroad
- Mobility: One number across devices
- Scalability: Add new users or numbers easily
- Advanced features: Conference calls, voicemail-to-email, call analytics
Top 10 Best VoIP Calling Apps in Bulgaria (2025)
1. RingCentral Bulgaria
Best for: All-in-one business solution
Features:
- Unlimited local calls in Bulgaria
- HD voice & video
- CRM integrations
- Voicemail-to-email
Pricing: From €22/month per user
Example: A Sofia-based digital marketing firm cut telecom costs by 60% and improved response times.
2. Zoom Phone
Best for: Teams already using Zoom
Features:
- Local Bulgarian numbers (+359)
- Video integration
- Call recording and voicemail transcription
Pricing: From €16/month per user
3. 8×8 X Series
Best for: International teams
Features:
- Unlimited calls to 40+ countries
- Cloud PBX
- Call analytics
Pricing: From €25/month
4. Aircall
Best for: Call centers and sales teams
Features:
- CRM integration (HubSpot, Salesforce)
- Virtual Bulgarian numbers
- Real-time call monitoring
Pricing: From €38/month per user
5. NFON Bulgaria
Best for: SMEs needing EU-based provider
Features:
- Hosted PBX
- Cloud phone system
- GDPR-compliant data hosting
Pricing: From €20/month
6. Microsoft Teams Phone
Best for: Microsoft 365 users
Features:
- Internal and external calling
- Outlook integration
- Call forwarding & routing
Pricing: From €18/month per user
7. Vonage Business Cloud
Best for: Flexible business solutions
Features:
- Virtual numbers in Bulgaria
- Mobile apps
- Call forwarding
Pricing: From €24/month per user
8. GoTo Connect
Best for: Small and medium businesses
Features:
- HD voice quality
- Custom call routing
- Slack and Google Workspace integration
Pricing: From €21/month per user
9. Zoiper
Best for: Freelancers and individuals
Features:
- Supports multiple SIP accounts
- Encrypted calls
- Desktop and mobile support
Pricing: Free basic / €14 pro version
10. MyNetFone Bulgaria
Best for: Local Bulgarian users
Features:
- Local number support
- Cloud-based infrastructure
- 24/7 local support
Pricing: From €20/month
Comparison Table
| App | Ideal For | Price/Month (€) | Key Feature | Rating |
|---|---|---|---|---|
| RingCentral | All-rounder | 22 | Unified communication | ⭐⭐⭐⭐⭐ |
| Zoom Phone | Teams | 16 | Video + VoIP | ⭐⭐⭐⭐ |
| 8×8 | Global | 25 | International calls | ⭐⭐⭐⭐ |
| Aircall | Call centers | 38 | CRM integration | ⭐⭐⭐⭐ |
| NFON | SMEs | 20 | GDPR-compliant | ⭐⭐⭐⭐ |
| Teams Phone | Microsoft users | 18 | Integration | ⭐⭐⭐⭐ |
| Vonage | Flexible SMEs | 24 | Mobile apps | ⭐⭐⭐⭐ |
| GoTo Connect | SMB | 21 | Easy setup | ⭐⭐⭐⭐ |
| Zoiper | Freelancers | 14 | SIP flexibility | ⭐⭐⭐ |
| MyNetFone | Bulgarian users | 20 | Local support | ⭐⭐⭐⭐ |
How to Choose the Right VoIP App in Bulgaria
- Determine your call volume
- Check internet speed and stability
- List essential features
- Compare pricing
- Evaluate GDPR compliance and support
- Test free trials before committing
Benefits of Using VoIP in Bulgaria
- Reduced telecom costs
- HD voice quality
- Mobility across multiple devices
- Easy scalability for growing teams
- Cloud-based features for remote work
Common Mistakes to Avoid
- Ignoring internet bandwidth
- Using non-GDPR-compliant apps
- Not training users
- Paying for unnecessary features
Case Study: Sofia Startup Saves 50% on Telecom
A Sofia-based IT startup switched to RingCentral VoIP. Within three months, their telecom expenses dropped 50%, remote teams could seamlessly work from home, and customer support improved significantly.
Conclusion
The best VoIP app in Bulgaria depends on your needs:
- Individuals: Zoiper or Wire
- SMEs: RingCentral, NFON, Aircall
- Enterprise / Call centers: 8×8, Aircall, Microsoft Teams Phone
VoIP provides cost savings, mobility, flexibility, and advanced features for both personal and business use.
FAQs: Best VoIP Calling App Bulgaria
1. Can I get a Bulgarian phone number with VoIP?
Yes, most providers offer +359 numbers.
2. Is VoIP legal in Bulgaria?
Yes, fully regulated under BTTK.
3. Can VoIP apps work on mobile data?
Yes, on 4G or 5G networks.
4. Are free VoIP apps suitable for business?
Usually not—they may lack business features or GDPR compliance.
5. How to pick the best app?
Consider pricing, features, GDPR compliance, and local support.
