Mobility+ vs Second Phone Number
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Mobility+
This mobile VoIP solution allows users to make high-quality voice calls over Wi-Fi and cellular data networks. It integrates with existing contacts and can intercept cellular calls and SMS messages. Service providers can deploy this for their customers to expand their mobile IP offerings.
- High-quality VoIP calls over Wi-Fi/cellular data
- Integrates with existing address book
- Intercepts cellular calls and SMS
- Runs in background for incoming calls
- 3-way calling
- Call logs
- Bluetooth support
Read full descriptionHide full description
AudioCodes Mobility+™ is a Mobile VoIP Solution from AudioCodes comprised of a Client Management System (CMMS) and a variety of Mobile Soft Clients for leading Mobile Operating Systems and Smartphones. The solution is designed for deployment by service providers to their customers. Mobility+ Client provides high quality Voice over IP calls via existing mobile phones (using WiFi and cellular data). This enhances standard GSM Mobile Networks by taking advantage of widespread data connectivity available today via WiFi hotspots and cellular data networks. NOTE: Service providers, please contact AudioCodes representative at www.audiocodes.com/Mobility+ for more information and activation of the client. End-User Features • Simple and Intuitive UI – enabling rapid access and maintaining a familiar user interface for common users • Data Connectivity - Mobility+ Clients use the mobile phone’s existing data connectivity options (Wi-Fi or 3G/4G) to connect to a Service Provider operating a SIP-based network • Existing Address Book - Clients use the mobile device’s existing contacts - no modification or duplication of contacts is needed • Cellular Operation Interception - Automatically intercepts cellular calls and SMS text messages and diverts them into the SIP network, when it is available • Runs in background so you can receive calls anytime • Chat with other contacts • Make 3-way calls • Call Logs - Mobility+ Clients support their own Call Logs to display information regarding dialed, missed and received calls • Bluetooth support • Support iOS Push Notifications Service Provider Benefits NGN Service Providers can expand their current offering from the traditional, wireline Voice over Broadband services to mobile handsets, allowing them to evolve into Mobile IP Providers. Mobile Service Providers can increase the use of their network by roaming users, utilizing public WiFi networks, saving international termination costs. • Efficient Distribution - Enabling efficient distribution of the clients to the relevant mobile handsets • Interoperability - Wide interoperability with all major SIP Softwitches, gateways and clients • Flexible Branding - Mobility+ offers the possibility to brand the application according to the Service Provider’s needs, including pre-configuring and shipping the mobile device ready for use Flexible Provisioning - Ability to pre-configure and lock the Service Provider’s configuration, thereby eliminating risk of possible customer fraud • Device - Independent - The Mobility+ Client is a stand-alone application - it cannot be blocked or disabled by the phone manufacturer • Platform - Independent - Available on leading mobile devices and operating systems ***VOIP OVER 3G/4G/LTE - IMPORTANT NOTICE - PLEASE READ*** Be aware that some mobile network operators prohibit or restrict the use of VoIP (Voice over Internet Protocol) over their network. They may prohibit the use of VoIP over their network or impose additional fees and/or charges when using VoIP over their network. By using AudioCode Mobility+™ for iOS over Data Cellular, you agree to familiarize yourself with and abide by any restrictions your cellular carrier imposes and agree that AudioCodes will not be held liable for any charges, fees or liability imposed by your carrier for using AudioCode Mobility+™ for iOS over their data cellular network. *IMPORTANT: Mobility+ for your phone requires Mobility+ account at your company. Follow us for updates and news: Facebook: http://www.facebook.com/audiocodes Twitter: http://twitter.com/AC_Mobility+
Second Phone Number
This app provides a second phone number for private communication, business, or travel. It features an AI receptionist, IVR call routing, and travel eSIMs. Manage calls and texts without needing a second device or physical SIM.
- Second phone number for calls and texts
- AI receptionist and IVR call routing
- Virtual number for private communication
- Travel eSIM data plans
- Mobile top-ups
- AI voice avatars for greetings
Read full descriptionHide full description
Simbuster gives you a second phone number, AI receptionist, IVR call routing, travel eSIMs, mobile top-ups, calling and texting app in one communication telecom app. Get a second phone number for work, business, travel, online selling, customer calls or private communication. Keep your personal number separate, make and receive calls through virtual number, manage messages, route caller and stay connected without carrying another phone or swapping your physical SIM. SECOND PHONE NUMBER FOR CALLS & TEXTS NOW Get a second phone number for work, travel, online marketplaces, customer calls, side projects or unlimited private communication. Use your second number to: * Keep your personal number private * Separate work and personal communications * Communicate with customers plus clients * Manage online selling and marketplace contacts * Stay reachable while travelling * Avoid carrying a second phone or physical SIM Number availability, unlimited calling and messaging features vary by country, number type and provider support. AI RECEPTIONIST & IVR TELECOM CALL ROUTING Turn your second phone number into a professional business phone system. Create telecom call flows directly from your phone: * Build IVR menus * Create professional greetings * Route caller to the right person or department * Send free calls to voicemail * Manage business hours and call handling * Use AI tools to answer incoming calls when you're unavailable Simbuster helps freelancers, founders, small businesses, property managers, coaches, consultants, online sellers and remote teams handle calls without a complicated phone system. AI VOICE AVATARS & PROFESSIONAL GREETINGS Create memorable greetings and receptionist prompts with AI voice avatars and character-style voices. Use them for: * Business greetings * Welcome messages * IVR prompts * Receptionist messages * After-hours messages * Branded or creative call experiences usind second phone number Create professional audio without a studio or voice actor. CALLING APP & CALL COMMUNICATION Make and receive supported calls through Simbuster and manage your unlimited calling phone service provider in one place. Depending on your number and plan, you can access: * International calling * Calling credits * Call routing * Voicemail * AI call handling * 2nd line phone number * Professional greetings * Smart call management tools TRAVEL ESIM DATA Stay connected while travelling with supported eSIM data plans. Activate mobile data without swapping your physical SIM card. Simbuster travel eSIMs can help you stay connected on holidays, business trips and international travel. Useful for travellers, digital nomads, students and people living or working abroad. MOBILE TOP-UPS Send prepaid mobile top-ups to supported networks and countries. Top up your own mobile or help friends, family and team members stay connected when they need it using Simbuster phone service providers. BUILT FOR WORK, TRAVEL & PRIVATE COMMUNICATION Simbuster is designed for: * Second phone numbers * Business phone numbers * Private calling and texting app * Customer communications * AI receptionist phone service provider * IVR and call routing * International communication * Travel eSIM data * Mobile top-ups * Freelancers and small businesses * Remote teams * Expats and digital nomads One app for your numbers, calls, receptionist tools, travel connectivity and unlimited mobile phone services. Feature availability varies by country, number type, plan and telecom provider. SMS, verification codes, calls, eSIMs, caller id, top-ups, AI tools, IVR and voicemail may not be available for all users or phone numbers.
Screenshots
Verdict
The clearest difference is in-app purchases: Mobility+ at none against Second Phone Number's 10. Mobility+ also leads on iOS requirement (9.0 vs 15.1). Second Phone Number's advantage is update cadence (weekly vs every 8 months). On price, rating, ratings volume and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Second Phone Number sells 10 one-off in-app purchases. Mobility+ asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for Mobility+ against 5.0 for Second Phone Number. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
Mobility+ ships an update every 8 months, Second Phone Number weekly. The most recent releases landed on November 1, 2026 and October 30, 2026 respectively.
| Parameter | Mobility+ | Second Phone Number |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (1 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 1 | 1 |
| Update frequency | Every 8 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 9.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 90 MB | 63 MB |
| Age rating | 4+ | 4+ |
| Developer | AudioCodes | Tierra Digital Limited |
Customer experience
Mobility+
Second Phone Number
In-app purchases
Mobility+
No in-app purchases
Second Phone Number
- Speech credit 1.99$1.99
- Sms Credit $1.99$1.99
- Speech Credit 1.99$1.99
Show 7 moreShow fewer
- Sms credit 3.99$3.99
- Speech credit 3.99$3.99
- Speech Credit 3.99$3.99
- Sms Credit $3.99$3.99
- Speech credit 6.99$6.99
- Speech Credit 6.99$6.99
- Sms Credit 6.99$6.99
Questions
Is Mobility+ free?
Is Second Phone Number free?
Which has better reviews, Mobility+ or Second Phone Number?
Do Mobility+ or Second Phone Number have ads?
Which is updated more often, Mobility+ or Second Phone Number?
Other comparisons















