OpenPhone vs Sideline Comparison
OpenPhone
Starting at $10 /User/Month
- Free Trial
- Large Enterprises
- Medium Business
OpenPhone helps you transition your telephone system to the cloud, so you can access it from anywhere. Avoid confusion between personal and professional communication, thanks to this powerful software. Cut down on interr…
Sideline
Starting at $9.99 /Month
- Free Trial
- Large Enterprises
- Medium Business
Sideline is the perfect app to improve how to keep your life, job and personal number organized. With its easy to use interface, it allows you to organize all your communication in one place. You'll be able to know what'…
Sideline leads on user satisfaction with a 4.5-star rating across 6 reviews.
OpenPhone vs Sideline — at a glance
| Feature | OpenPhone | Sideline |
|---|---|---|
| Rating | 4.3 / 5 | 4.5 / 5 |
| Reviews | 84 | 6 |
| Starting price | $10 /User/Month | $9.99 /Month |
| Free trial | Yes | Yes |
| Free version | No | No |
| Best for | Large Enterprises, Medium Business, Small Business | Large Enterprises, Medium Business, Small Business |
| Category | VoIP Providers | SMS Marketing Software |
| Platforms | SaaS/Web/Cloud, Mobile - Android, Mobile - iOS | SaaS/Web/Cloud |
| API | — | — |
| Support modes | Online | Online |
| Certifications | SOC 2, GDPR | — |
| Data residency | US | US |
Key differences between OpenPhone and Sideline
- Pricing: OpenPhone starts at $10 /User/Month, while Sideline starts at $9.99 /Month.
- User satisfaction: Sideline scores higher with a 4.5-star average.
- Deployment: OpenPhone supports SaaS/Web/Cloud, Mobile - Android, Mobile - iOS; Sideline supports SaaS/Web/Cloud.
OpenPhone vs Sideline — find the better fit before you commit.
Which tool fits your team best
Which is actually cheaper for your team size
Where each product wins, per real buyers
Most VoIP Providers tools look identical on paper. This comparison cuts to the differences that matter — pricing structure, team fit, and what real buyers found after signing up.
Biggest differences
Features
Pricing
Buying details
Security
Buyer feedback
Integrations
Product tour
Other options
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Biggest differences
Start here before you go deeper into features.
Best for small to mid-sized remote teams needing simple cloud phone systems.
- You want an easy-to-use cloud phone system accessible from anywhere.
- You need to separate personal and professional communications clearly.
- Your team requires basic call routing with IVR, extensions, and shared lines.
- Your enterprise demands highly customized or advanced telephony infrastructure.
- You require an on-premises phone system rather than a cloud solution.
Best for small businesses needing simple, private dual-number communication management.
- You want to separate personal and business messages on one device securely.
- You need an easy-to-use app to organize all communications in one place.
- You are a small team or freelancer managing customer support or sales contacts.
- Your business requires advanced marketing automation or multi-channel campaign tools.
- You need integrated CRM or detailed analytics within your messaging platform.
OpenPhone: Best for small to mid-sized remote teams needing simple cloud phone systems. Sideline: Best for small businesses needing simple, private dual-number communication management.
Description | OpenPhone helps you transition your telephone system to the cloud, so you can access it from anywhere. Avoid confusion between personal and professional communication, thanks to this ... Read More about OpenPhone | Sideline is the perfect app to improve how to keep your life, job and personal number organized. With its easy to use interface, it allows you to organize all your communication in one ... Read More about Sideline |
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Entry Level Pricing |
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User RatingsBased on verified Spotsaas reviews | ||
Best Company Size | 1-50 employees51-500 employees | 1-50 employees51-500 employees |
Get pricing help | Get pricing help |
Software Demo
Demo |
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How do OpenPhone and Sideline Compare on Features?
Total Features | 8 Features | 4 Features |
|---|---|---|
Unique Features | No unique features | No unique features |
Get Quote | Get Quote |
Compare OpenPhone and Sideline on pricing
Review starting price, plan structure, and free-trial access side by side so you can see which option fits your budget and buying process.
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Other Details
Organization Types supported |
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Platforms Supported |
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Modes of support |
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API Support |
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Get help choosing | Get help choosing |
Security & Compliance
Certifications, data handling, and security controls for IT and compliance evaluators.
SOC 2 | ✓ Yes | — |
|---|---|---|
HIPAA | ✗ No | — |
GDPR | ✓ Yes | — |
Single Sign-On (SSO) | ✓ Yes | — |
Multi-Factor Auth (MFA) | ✓ Yes | — |
Data Encryption | ✓ Yes | — |
Audit Logs | ✓ Yes | — |
Data Residency | 🇺🇸 US | 🇺🇸 US |
OpenPhone User Reviews & Rating Comparison
User Ratings | 4.5 (based on 6 reviews) | |
|---|---|---|
Rating Distribution | ||
Spotsaas Editor’s POV generated by AI | Buyer sentiment Users generally appreciate OpenPhone for its ease of use and cloud accessibility but note concerns about pricing transparency and advanced feature limitations. What buyers like
Common complaints
| Buyer sentiment Users appreciate Sideline's ease of use and privacy features but note limited advanced marketing capabilities. What buyers like
Common complaints
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Pros and Cons |
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Positive Reviews | No reviews available for the product | No reviews available for the product |
| Negative Reviews | No reviews available for the product | No reviews available for the product |
Media and Screenshots
Videos |  2 Videos |  4 Videos |
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Top Alternatives to OpenPhone and Sideline in 2026
Alternatives |
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Disclaimer: This research has been collated from a variety of authoritative sources. We welcome your feedback at [email protected].
Frequently asked questions
- Which is better, OpenPhone or Sideline?
- Sideline edges out the other on user ratings (4.5 vs 4.3). That said, the best pick depends on your use case — use the comparison tables above to evaluate each dimension.
- Do OpenPhone and Sideline offer a free trial?
- Yes, both OpenPhone and Sideline offer a free trial.
- What is the starting price of OpenPhone vs Sideline?
- OpenPhone starts at $10 /User/Month. Sideline starts at $9.99 /Month.
- What are the top alternatives to OpenPhone?
- Top alternatives to OpenPhone include Dialpad Talk, RingCentral Office, Vonage Business, Grasshopper, Dialpad Sell.
- What are the top alternatives to Sideline?
- Top alternatives to Sideline include Grasshopper, Salesmsg, SimpleTexting, MessageDesk, Hustle.