Top VoIP and SIP Apps for iPhone in 2026

Top VoIP and SIP Apps for iPhone in 2026

Top 5 VoIP Apps for iOS

Choosing the best voip app for iphone depends on whether you need app-to-app calling, low-rate calling to real phone numbers, SIP support for business PBXs, or a free voip app for iphone that covers basic needs. Here are five strong options across those use cases.

1. Telvio

• What it does: Calls real phone numbers (landlines and mobiles) in 200+ countries over WiFi or mobile data.
• Why pick it: Very low rates (from $0.02/min to the US, $0.08/min to India), per-second billing, no connection fees, and credits never expire. You can buy credit packs ($1.99 Starter, $4.99 Standard, $9.99 Pro) and get 1 free minute on first install.
• Best for: Travelers, expats, and anyone who needs cheap international calling to regular phone numbers without an account or subscription.

2. Skype

• What it does: App-to-app voice and video plus Skype-to-phone calling.
• Why pick it: Broad adoption, reliable call quality, and Skype Credit or subscriptions for calling phone numbers. App-to-app calls are free; calls to phones use billed minutes.
• Best for: Users who want a familiar interface, cross-platform app-to-app voice/video, and subscription options for frequent international calling.

3. Bria (CounterPath)

• What it does: A professional softphone app with full SIP support, multiple accounts, and business features.
• Why pick it: Strong SIP feature set (SIP TLS/SRTP), multiple lines, softphone controls, and integrations useful for business or remote workers.
• Best for: Companies and professionals who need a full-featured softphone iphone or a team-ready SIP client.

4. Zoiper

• What it does: SIP softphone for iPhone and other platforms; supports multiple codecs and account types.
• Why pick it: Easier SIP setup for many providers, good codec support, and a free tier suitable for basic SIP use.
• Best for: Users who want a free or low-cost softphone iphone that can register with a SIP provider or PBX.

5. Linphone

• What it does: Open-source SIP softphone with apps for iOS, macOS, and other platforms.
• Why pick it: No-cost option with standard SIP features, encryption support (SRTP/ZRTP), and a commitment to privacy.
• Best for: Privacy-minded users or developers who want an open-source sip softphone for mac and iPhone.

Quick note on selection: if your goal is the best softphone app for iphone to connect to a business PBX, Bria or Zoiper typically provide the strongest feature sets. If you want the best free voip app for iphone to call friends who also use the app, Skype, FaceTime Audio (Apple-to-Apple), WhatsApp, and Viber handle that without per-minute charges. For calling real phone numbers with predictable low rates and no subscriptions, Telvio is a strong pick.

Free vs Paid VoIP Solutions

When people search “free voip app for iphone” or “best free voip app for iphone,” they usually mean one of two things: free app-to-app calling, or low-cost calls to standard phone numbers. Understand the trade-offs.

Free app-to-app

• Examples: FaceTime Audio, WhatsApp, Viber, Skype-to-Skype.
• Pros: No per-minute charges, excellent for calls between users on the same platform, usually good audio quality on decent networks.
• Cons: Both parties must have the same app and often the same platform (FaceTime requires Apple devices). These services don’t help if you need to call a landline or someone without the app.

Paid calling to phone numbers

• Examples: Skype Credit/Subscriptions, Telvio, carrier-based WiFi calling with per-minute carrier charges.
• Pros: Call regular phones worldwide, usually predictable rates and country-specific pricing, some apps offer per-second billing to save money.
• Cons: Per-minute charges, sometimes connection fees, and varying quality depending on network and provider.

Business vs consumer paid plans

• Consumer paid VoIP tends to use credit packs and per-minute billing. Telvio, for example, uses small credit packs and per-second billing so you pay only for time used.
• Business VoIP often uses monthly plans, centralized management, advanced features (call queues, IVR, multiple extensions). If you’re comparing business systems, see this business VoIP phone systems comparison for deeper detail.

If you’re deciding between a calling-card approach and an app, check the practical costs in this international calling cards comparison to see total per-minute rates plus fees. For casual calls to friends who already use the same app, a free app-to-app service will save money. For calling real phone numbers internationally, choose a paid VoIP app with transparent rates and per-second billing to avoid wasted credit.

SIP Softphone Comparison

“SIP” brings flexibility: register a SIP account from a provider or PBX and use a softphone iphone to make and receive calls like a desk phone. Below I compare the popular sip softphones for mac and iPhone and what each handles best.

Criteria to compare

• Push notifications on iOS: iOS aggressively manages background apps; a strong SIP client supports push so you don’t miss incoming calls.
• Codec support: G.711, Opus, G.722 matter for quality and bandwidth.
• Security: SIP TLS and SRTP for encrypted signaling and media.
• Multiple account support: handy if you manage personal and work lines.
• NAT traversal and STUN/TURN: improves reliability behind home routers and mobile networks.
• Ease of configuration: some apps auto-detect provider settings or import SIP profiles.

SIP clients to consider

• Bria (iOS/macOS)
  • Strengths: Enterprise-grade features, Push notifications, secure transport, multi-line support.
  • Best for: Business users and power users who need full SIP functionality.
• Zoiper (iOS)
  • Strengths: Easy account setup, solid codec support, and a free tier for basic use.
  • Best for: Users who want a straightforward softphone iphone without heavy configuration.
• Linphone (iOS/macOS)
  • Strengths: Open source, supports SRTP/ZRTP, available on mac as a sip softphone for mac.
  • Best for: Developers, privacy-focused users, or anyone who prefers open-source tooling.
• Grandstream Wave (iOS)
  • Strengths: Free SIP client from a reputable hardware vendor, supports multiple accounts and codecs.
  • Best for: Users who pair with Grandstream PBXs or want a no-cost softphone with decent features.

Practical picks

• Best sip app for business PBX: Bria (stable, secure, and feature-rich).
• Best free softphone iphone: Linphone or Zoiper (both have free tiers that support basic SIP calls).
• Best sip softphone for mac: Bria or Linphone, depending on whether you want a commercial support option (Bria) or an open-source client (Linphone).

If you plan to use SIP with a virtual number or a hosted trunk, read the basics in our virtual phone numbers guide to understand how registration and inbound routing typically work.

Key Features of Top VoIP Apps

When people search “best softphone app” or “best voip app ios,” they usually look for specific features that match their daily needs. Here are the features that matter most and why.

1. Call quality and codecs

• Look for Opus and G.722 for wideband audio. These codecs provide clearer voice on low-bandwidth networks.
• Adaptive jitter buffers and packet loss concealment help maintain quality on mobile data networks.

2. Billing transparency

• Per-second billing prevents you from overpaying for short calls. Telvio uses per-second billing, and it has no connection fees.
• Clear country rates help you estimate costs before calling.

3. Push notifications and backgrounding

• On iOS, proper push support ensures you receive incoming calls when the app is not active. For SIP softphones, this is essential.

4. Security

• SIP TLS for signaling and SRTP for media protect call contents. Apps that support secure modes help meet privacy requirements.

5. Multiple lines/accounts

• Professionals often handle several numbers. A good softphone app lets you register multiple SIP accounts and switch easily between lines.

6. Voicemail, SMS, and call forwarding

• Integrated voicemail and SMS (where supported) reduce friction if you need reachability without a separate service.
• Many apps support conditional call forwarding to ensure no calls are missed.

7. Integrations and extras

• CRM integrations, click-to-dial from mobile contacts, and call logs that export to CSV matter more for business users.
• If you need a free option first, test the app with a small credit pack or a free minute to confirm voice quality and usability.

8. Account and registration model

• Some apps require registration or a provider account. Telvio, for instance, does not require registration or an account to buy credit and call—helpful for users who prioritize simplicity.

9. Pricing models

• Credit packs vs monthly subscriptions: choose based on frequency of use. Telvio’s credit packs ($1.99, $4.99, $9.99) work well for occasional international calls; heavier users may prefer subscriptions or business plans.

If you want to compare WiFi calling alternatives that use your carrier versus app-based VoIP, see our roundup of best wifi calling apps to weigh convenience against cost.

How to Choose the Right App

Use this decision checklist to pick the best voip for iphone or the top softphone iphone for your needs.

1. Define your primary need

• Call other app users for free: choose FaceTime, WhatsApp, or Skype.
• Call regular phone numbers cheaply: choose a low-rate VoIP app like Telvio or Skype with pay-as-you-go credit.
• Connect to a business PBX: pick a dedicated SIP softphone such as Bria or Zoiper.

2. Check platform compatibility

• Confirm iOS support and, if needed, macOS support for desktop calling. For SIP softphone for mac, Linphone and Bria are solid options.

3. Test call quality on your typical network

• Make a short test call from WiFi and from mobile data. Per-second billing or a free minute helps you test without large expense.

4. Verify push notifications and battery behavior

• A softphone that fails to receive calls when backgrounded is not useful for day-to-day calling.

5. Review pricing and billing model

• If you place many short calls, per-second billing saves money. If you call a single country heavily, check subscription rates versus per-minute billing.
• For one-off or low-volume users, credit packs like Telvio’s $1.99 Starter minimize upfront cost.

6. Look for security and compliance features

• If you handle sensitive information, demand SIP TLS and SRTP. For businesses, check for audit logs and admin controls.

7. Consider management and support

• Businesses should prefer vendors with account management and technical support. Individuals may prioritize low cost and simplicity.

8. Use internal resources

• If you need virtual numbers or plan to forward calls to multiple devices, our free virtual phone numbers guide explains setup options. If you compare international calling methods, our international calling cards comparison helps you estimate costs and fees.

9. Try before committing

• Look for a free trial, a free minute (many apps offer this), or a small credit purchase to validate fit. If you have a PBX, test an inbound call to ensure NAT traversal and push notifications work correctly.

A practical example: Sarah calls family in three countries for 20 minutes a week. Per-minute tariffs vary, so she chose Telvio for its low per-minute rates to her most-called destinations, bought a $4.99 pack, and kept per-second billing to avoid wasted minutes. If Sarah needed business PBX features, she would instead choose a softphone iphone like Bria and add a SIP trunk.