Second Line Calling/Texting vs BondBoost
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Second Line Calling/Texting
Add a second phone number to your device for private texting and calling. Protect your personal number from spam and unwanted calls when dating, selling online, or for any project. Easily manage multiple numbers and contacts within the app.
- Add a second phone number
- Keep personal number private
- Unlimited texts and calls (premium)
- Create multiple numbers
- Separate contacts
- Burn temporary numbers
- Mask caller ID
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Flexible Numbers - Add another phone number on your existing device Keep your personal phone number private Instead of giving out your personal number, create a new one and never worry about privacy or receiving spam calls. Use it for dating, online ads or anything else! Get a number in seconds Getting started is simple! Just download the app and start texting or calling right away Unlimited Texts & Calls With the premium plan, get unlimited texting and calling in the US and Canada Create multiple numbers Stay in control by creating multiple numbers on the same device Unlimited calling, texting and picture messaging Make calls and send and receive messages right from the app, using any of your numbers. Easily switch between your numbers at any time Separate contacts Manage your contacts separately from your phone's contacts Protect your privacy Protect your app with a passcode, Touch ID or Face ID Temporary numbers When you are done with a phone number, simply burn it Mask your caller ID with a new, private, flexible and reliable phone number Flexible Numbers Phone is a second phone number for everyday situations such as dating, relationships and more The best number changer app for private texting and calling! It's just like any other phone number but it protects your carrier number and safeguards your identity. A layer of security between you and the ones you are texting and calling. Flexible Numbers Phone is the perfect temporary number for: • buying things online (like craigslist, ebay, etc) • online dating (stay safe!) • applying for jobs • hosting airbnbs • any other kind of project! Avoid giving out your real carrier number to strangers and give out your Flexible Numbers Phone number instead! To get started download the app and get your new number now! Premium Number Plan: - We offer a monthly premium subscription plan that offers unlimited calls, texts and MMS messages within North America - We also offer a monthly basic subscription plan that offers a phone number for texting and calling within North America - Payment will be charged to iTunes Account at confirmation of purchase and at the end of each month - Your subscription automatically renews unless auto-renewal is turned off at least 24 hours before the end of the current monthly subscription - You can manage your subscription and switch off the auto-renewal by going to your account settings after purchase - You cannot cancel the current subscription during the active subscription period - Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable - Privacy Policy: https://flexiblenumbers.com/privacy/ - Terms: https://flexiblenumbers.com/terms/ You may not use the service for sending fake texts, prank texts, spoof texts or for anonymous texting or anonymous calling. The recipient you text or call will not know who you are (unless you tell them), however you are never completely anonymous when texting or making calls. If you break these terms, your device will be banned and your identity might be revealed to the authorities upon request. You must be at least 13 years old to use the service. Not for 911 emergency services. Have questions, problems, or feedback? Contact us at contact@flexiblenumbers.com
BondBoost
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Bond Boost strengthens bonds by helping you stay in touch without excuses. The app sends personalized reminders for check‑ins with family, friends and work contacts, so important relationships never fade. Set targets for weekly calls, monthly catch‑ups or custom schedules and receive gentle notifications when a check‑in is due. Organize your network into circles such as family, close friends, classmates or colleagues and assign priorities to give extra attention to those who need it most. Every interaction becomes part of a rich history. After each call, message or meeting, log memorable details such as birthdays, hobbies, shared experiences, upcoming events or life changes. The notes section supports text so you remember important moments, gift ideas or topics that made your last conversation meaningful. When you feel stuck for a conversation starter, Bond Boost provides curated prompts tailored to each connection. These prompts range from simple catch‑up questions to deeper topics about goals, achievements and personal interests. Before a birthday, milestone or holiday, the system alerts you, reducing last‑minute stress. Privacy sits at the core of the experience. Bond Boost syncs with your contacts but keeps data on your device or within your private cloud storage. No account is required, and no data is shared with third parties. With built‑in encryption, personal notes, tags and reminders remain accessible only to you. A smart tagging system allows you to label contacts by interests, groups or priority. Use tags like “soccer buddies,” “work mentors” or “holiday gift list” to sort and filter your network. The dashboard offers a timeline that highlights upcoming check‑ins, recent activity and missed connections. Visual indicators reveal who you have not reached out to recently, while charts show patterns in your interactions and encourage balanced outreach. Designed for busy schedules, Bond Boost reduces mental load by managing social commitments in one place. Customizable widgets and summaries on the home screen keep your relationships top of mind without requiring you to open the app. Automatic follow‑up reminders after birthdays, anniversaries or significant events ensure no important moment goes unnoticed. Additional features include: – Event planner: schedule and manage group activities or personal events and integrate them with your calendar. – Habit builder: track streaks of regular contact and celebrate milestones when you reach connection goals. – Quick actions: call, message or video chat directly from within the app. – Search and filter: find contacts or notes quickly using names, tags or keywords. With Bond Boost you nurture every relationship with thoughtfulness and consistency. Whether reconnecting with a high school friend, sharing updates with extended family, supporting a colleague or planning a surprise for your partner, the app offers practical tools to foster strong connections.
Screenshots
Verdict
The clearest difference is in-app purchases: BondBoost at none against Second Line Calling/Texting's 8. BondBoost also leads on update cadence (every 3 weeks vs every 2 months). Second Line Calling/Texting's advantage is iOS requirement (15.6 vs 18.6). On price, ads and device support 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 Line Calling/Texting sells 8 in-app purchases, starting at $9.99 per month. BondBoost asks for nothing beyond the download.
Second Line Calling/Texting ships an update every 2 months, BondBoost every 3 weeks. The most recent releases landed on September 30, 2026 and October 3, 2026 respectively.
| Parameter | Second Line Calling/Texting | BondBoost |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (2K ratings) — better | — |
| Positive reviews | 67.6% of reviews | — |
| Number of ratings | 2K — better | — |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.6 — better | 18.6 |
| Further details — not scored | ||
| Size | 11 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | BinaryPattern | Marc David |
Bugs and requests
Second Line Calling/Texting
Reported bugs
4 issues- Dropped calls
- Failed message deliveries
- Disappearing contacts
- Billing/subscription problems
Requested features
4 requests- Ability to send images/videos
- More free credits/minutes
- Improved customer support channels
- Compatibility with newer OS versions
BondBoost
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Second Line Calling/Texting
- Premium Line$9.991 Month
- Premium Number Plan3 Days trial$9.991 Month
- Premium Number Plan Upgrade$9.991 Month
- 3 Coin Pack$2.99
- 8 Coin Pack$5.99
- 15 Coin Pack$9.99
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- 25 Coin Pack$13.99
- 60 Coin Pack$27.99
BondBoost
No in-app purchases
Questions
Is Second Line Calling/Texting free?
Is BondBoost free?
Do Second Line Calling/Texting or BondBoost have ads?
Which is updated more often, Second Line Calling/Texting or BondBoost?
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