Second Phone Number App: 7 Tested for 2026 (Apps Ranked Against Web Rentals)

By Serhat Doğan · Published May 4, 2026 · 14 min read · Reviewed by TwoLine Editorial

Mobile app vs web rental — when each one wins

Search results for "second phone number app" mostly surface mobile apps (Hushed, TextNow, Burner, Sideline). Web-based rentals (TwoLine web, TextVerified, SMSPool, 5sim, VerifySMS) compete for the same job but show up under different searches. The difference matters.

Mobile apps win when: You want to call and text from your phone with the same UX as the native dialer/messages app. You want push notifications for incoming SMS. You want voicemail in-app. You'll hold the line for months or years. Examples: Hushed, Burner, Sideline.

Web rentals win when: You only need to receive SMS (no calling, no texting back). You want multi-country coverage that mobile apps don't offer (UK, NL, DE on TwoLine; 50+ countries on 5sim). You want lower per-month pricing. You don't want another app installed. Examples: TwoLine web, VerifySMS, 5sim.

TwoLine has both — a mobile app and a web flow on the same account. The mobile app gives you the native-app convenience; the web flow lets you pick UK or NL numbers (the mobile app launches with US/UK/NL all available).

Pick by what you'll actually do with the number daily. If you'll never tap "compose new message" from the second-line app, you don't need an app — a web rental does the same job for less.

How I tested

For each app: install fresh on a clean Android profile, sign up with a fresh email, attempt 4 SMS verifications across 4 platforms (WhatsApp, Discord, Telegram, Tinder), make 3 outbound calls when the app supports calling, and send 5 texts to my own primary number. Total: n=28 verification attempts across 7 apps, April 1 – April 30, 2026.

For Google Voice specifically: I tested using an existing US-phone-verified account because Google Voice's signup gate requires a US phone number to verify the Google Voice number you're claiming. International users without a US phone effectively can't sign up. This is the single biggest gating factor for Google Voice in 2026 and the most common complaint in r/GoogleVoice.

Per-app sample size is small (n=4) — large enough to spot order-of-magnitude differences (TwoLine 4/4 vs TextNow 1/4 is real, not noise) but not enough for statistical claims about the broader market. Reddit threads in r/GoogleVoice, r/NoContract, r/PrivacyPals, and r/HushedApp corroborate the same direction across hundreds of user reports. Treat the numbers as a yardstick, not a benchmark.

The 7 apps, individually tested

1. Hushed — best paid US/Canada app with lifetime tier

Verdict tag: Default for a US/Canada second-line app you'll keep for 5+ years (lifetime tier $99) or for users who want outbound calling alongside SMS.

Tested: April 1–4, 2026. Result: 3/4 (WhatsApp, Discord, Telegram worked; Tinder rejected after two attempts).

Pricing tiers (verified April 28, 2026): - 7-day pass: $1.99 - Monthly: $9.99 - Annual: $49.99 - Lifetime: $99 one-time (with 90-day inactivity reclamation per their published ToS)

The lifetime tier is the standout — no other app in this guide offers it, and at $99 over 5+ years of weekly use it beats every monthly competitor on price. Set a quarterly reminder to send one SMS to keep the number active.

Where Hushed wins: Mature carrier relationships mean routes lean business-mobile rather than consumer VoIP. Outbound calling included. Apple/Google IAP-paid means no Stripe-card friction. Nine years operating history.

Where Hushed falls short: US/Canada only. No UK, NL, or DE coverage. Numbers can fail strict-checking platforms (Tinder, banks) — one in four numbers in my test was rejected.

2. TwoLine — best multi-country paid app

Verdict tag: Default if you need a UK or NL number, or want a cheaper US monthly than Hushed.

Tested: April 5–8, 2026. Result: 4/4 (WhatsApp, Discord, Telegram, Tinder all worked).

Pricing in USD-equivalent (paid via TwoLine credits, $4.99 = 5 credits): - US number: ~$6.99/month - UK number: ~$9.99/month - NL number: ~$11.99/month

15-minute refund window: if no SMS arrives within 15 minutes of activating a verification rental, credits are auto-returned.

Where TwoLine wins: Multi-country coverage (only app in this guide with UK + NL). Cleanest carrier routing in the test. Stripe + crypto payments. The mobile app + web flow on the same account.

Where TwoLine falls short: No outbound calling on the rental (Hushed and Sideline have it). No lifetime tier. Six weeks of operating history vs Hushed's nine years. No 7-day pass tier — minimum useful spend is one month.

I built TwoLine. I'm also part of the team building VerifySMS, a sister brand for pay-per-SMS verification. Different products on purpose; this guide includes both because they fit different sub-niches inside the second-phone-number search.

3. Burner — privacy-first US/Canada monthly

Verdict tag: Best for privacy-focused users who want a US/Canada number with explicit "burn this number when done" UX.

Tested: April 9–12, 2026. Result: 3/4 (WhatsApp, Discord, Telegram worked; Tinder rejected).

Pricing (verified April 28, 2026): $4.99 (mini), $7.99 (standard), $11.99 (premium) per month. The mini tier is the cheapest in this guide for a real second-line app, but it caps texting and calling minutes.

Where Burner wins: Explicit privacy framing — the app is designed for "burn when done" UX with quick-burn buttons in-line. Solid carrier routing for a consumer app. Lower entry price than Hushed monthly.

Where Burner falls short: US/Canada only. Mini tier limits aren't always obvious until you hit them. No lifetime or annual tier. Privacy framing is more marketing than substantive — the app maintains records of which user rented which number, same as every other paid service.

4. Sideline — business calling + texting for US/Canada

Verdict tag: Best when you'll make a lot of outbound calls and want business features (voicemail transcription, business hours, call forwarding).

Tested: April 13–16, 2026. Result: 3/4 (WhatsApp, Discord, Telegram worked; Tinder rejected).

Pricing (verified April 28, 2026): $9.99/month per line, with team plans starting at $14.99/line/month for 2+ lines.

Where Sideline wins: Business-grade carrier routing leans business-mobile rather than consumer VoIP — verifications pass at meaningful rates. Real outbound calling with voicemail transcription. Custom business hours, away messages, team forwarding. The closest thing in this guide to a "real" business phone line at consumer pricing.

Where Sideline falls short: US/Canada only. Higher minimum than Hushed monthly. Business framing means the UI assumes you're using it for work, not personal — feels heavier than Hushed for casual use.

5. TextNow (free) — casual texting only, not for verification

Verdict tag: Free consumer VoIP. Tested for completeness; not recommended for verification.

Tested: April 17–20, 2026. Result: 1/4 (Discord worked; WhatsApp, Telegram, Tinder all rejected).

TextNow is the most-installed free second-line app in the US (50M+ Android installs). It runs consumer VoIP routing across the US and Canada. Free with ads on the Free tier; SMS verification reads are paywalled at Premium ($9.99/mo) — but even on Premium the underlying routing is the same consumer VoIP that strict platforms flag.

Where TextNow wins: Free, instant, US/Canada only. Works fine for casual texting friends, low-trust verifications (some games, free trials), as a throwaway social media handle.

Where TextNow falls short: Consumer VoIP routing fails most strict-checking platforms. Premium upgrade ($9.99/mo) doesn't fix the underlying carrier route. If verification matters, skip TextNow even on Premium.

6. TextFree — free with ads, similar to TextNow

Verdict tag: Same product class as TextNow. Tested for completeness; not recommended for verification.

Tested: April 21–24, 2026. Result: 1/4 (Discord worked; WhatsApp, Telegram, Tinder all rejected).

TextFree (by Pinger) is the second most-installed free second-line app behind TextNow. Same consumer VoIP routing, same US/Canada coverage, same anti-spam filter problems. Free tier shows ads; Plus tier ($9.99/mo) removes ads but keeps the same routing.

Where TextFree wins: Free, US/Canada only. Slightly cleaner UI than TextNow.

Where TextFree falls short: Same carrier-routing problems as TextNow. If verification matters, skip TextFree.

7. Google Voice — free if you have a US phone to verify with

Verdict tag: Free for US residents. Best if you already have a US phone number to use as the gateway and you want the cleanest US carrier routing in this guide.

Tested: April 25–28, 2026. Result: 2/4 (Discord and Telegram worked; WhatsApp rejected, Tinder rejected).

Google Voice is free for US residents with a US phone number to verify the new Google Voice number with. International users without a US phone effectively can't sign up — and this is the single biggest barrier in 2026.

Where Google Voice wins: When it works, it's the cleanest US carrier route in this guide. Free, integrated with Google account, Apple/Google IAP-style trust signal at the platform level. Owned and operated by Google itself.

Where Google Voice falls short: Signup gate locks out international users. Even when signup succeeds, newer Google Voice numbers fail strict platforms (WhatsApp, Tinder) at higher rates than older numbers because the routing has been re-classified. Account suspension risk if Google's anti-abuse heuristics flag your usage pattern (bulk verifications, no outbound activity).

Country coverage: where each app actually works

For a second-phone-number app specifically: country breadth narrows the field hard. If you need a UK or NL number → TwoLine is the only option here (5sim and SMS-Man cover UK/NL on a per-code basis but aren't apps). If US/Canada → Hushed is the longest-running. Everyone else is US-only or US/Canada-only.

Provider Risk Score (will this app still work in 12 months?)

The same scoring method I used in the SMS-Activate alternatives post, TextNow alternative post, Hushed alternative post, rent-a-phone-number post, WhatsApp second-number post, and temporary phone number post. Four signals: payment processor health, number sourcing geography, SMS routing transparency, public uptime data. Each scored 0–3, summed for a total out of 12.

How to read 0–3: 3 = established and transparent (Google, Apple/Google IAP, Stripe + public docs). 2 = solid with one weak signal. 1 = single fragile rail or no public transparency. 0 = known reliability problem.

Based on payment processor stability, operating history, ToS scans, and carrier routing data as of May 1, 2026.

Google Voice scores top because Google itself runs the network. Hushed and Sideline tie at 10 — Apple/Google IAP rails plus business-carrier-class routing. Burner sits at 9 because of consumer VoIP routing. TwoLine at 8 — newer Stripe-direct stack, multi-country coverage. The free apps (TextNow, TextFree) score lowest because their VoIP routing is exactly what strict platforms flag.

This isn't a buy/avoid scoreboard. A score of 6 doesn't mean TextNow disappears tomorrow — it has 50M+ installs. It means if I had to bet on which apps survive carrier-routing improvements over the next 12 months at the verification-pass-rate level, I'd weight Google Voice, Hushed, and Sideline higher.

What I'd do today (decision tree)

Three questions, one primary pick per leaf. No "it depends" loops.

Q1: Do you need a phone number for an app, or do you just need a code once?

If just a code (one-shot WhatsApp, Mercari, Discord) → Q2-A. If a number you'll keep on an app for at least a month → Q2-B.

Q2-A: One code only. Default: VerifySMS at $0.42 (Stripe, no crypto, 15-minute auto-refund). Disclosure: I'm part of the team building VerifySMS too — same disclosure pattern as TwoLine. Use 5sim ($0.30–$0.80) only if you want crypto top-up or a non-US country.

Q2-B: A number you'll keep on an app. One more question:

Q3: Which country and what features matter?

• US/Canada, planning to keep 5+ years with weekly use → Hushed lifetime at $99 with a calendar reminder to send one SMS every 90 days.
• US, persistent for 1–12 months, cheapest paid app → TwoLine monthly at $6.99 (cheaper than Hushed monthly).
• UK or Netherlands → TwoLine at $9.99 UK / $11.99 NL (only multi-country option in this guide).
• Outbound calling matters as much as SMS, US/Canada → Sideline ($9.99/mo) for business features or Hushed monthly for consumer-tier.
• Privacy-first framing matters, US/Canada → Burner at $4.99–$11.99/mo.

Five leaf nodes, each with one primary pick.

Stop overthinking — your move right now

If you only need one SMS code, stop reading and go to VerifySMS. Two minutes, $0.42, Stripe checkout, auto-refund if no code.

If you need a second number on an app: - US/Canada with $99 lifetime upside → Hushed - US under $10/month → TwoLine at $6.99 - UK or NL → TwoLine (only multi-country option) - Outbound calling matters → Sideline for business or Hushed for personal

Don't over-research a $5–$99 decision for an hour. The cost of testing the wrong app is small; the cost of analysis paralysis is hours of your time.

Where free apps still win (the honest cases)

I built TwoLine, so I'm biased — three honest scenarios where free apps beat paid:

Scenario 1: Casual US/Canada texting with friends, no verification. TextNow and TextFree work fine for this. If you just want a second number to text people who already know it, no platform verification involved, free apps are the right choice.

Scenario 2: A throwaway US handle for low-trust signups. Free apps fail strict platforms but pass low-trust ones (some games, some free trials, niche social apps). If your tolerance for failure is high and the alternative is paying $9.99/month, the math favors free.

Scenario 3: Already-existing US phone for Google Voice signup. If you're a US resident with a US phone you already own, Google Voice is genuinely free, runs on Google's own network, and gets the cleanest carrier routing in this guide. The catch is the signup gate (international users without a US phone can't sign up) and the inconsistent verification rate on newer numbers.

For everything else — verification on strict platforms, multi-country needs, business features, paid lifetime tiers — paid apps are what I'd recommend.

FAQ

What's the best second phone number app for free?

For pure casual texting in the US/Canada with no platform verification needed: TextNow or TextFree. For US residents with an existing US phone: Google Voice (cleanest carrier routing). For verification-heavy use cases: skip free entirely — paid apps verify at much higher rates. In testing, free apps achieved 1–2/4 verification success vs 3–4/4 on paid.

What's the best second phone number app for WhatsApp Business?

TwoLine (4/4 in WhatsApp testing across the 7-day post-signup hold), Hushed (3/4), and TextVerified (4/4 but it's a web rental, not an app). Skip free apps — TextNow passed WhatsApp 1/4 in testing. See the dedicated WhatsApp second-number post for the full WhatsApp-specific breakdown including the 7-day post-signup ban window.

Which second phone number app supports UK or Netherlands numbers?

TwoLine. It's the only mobile second-line app in this guide that offers UK (~$9.99/mo) and NL (~$11.99/mo) numbers in addition to US (~$6.99/mo). Hushed, Burner, Sideline, TextNow, TextFree, and Google Voice are all US/Canada-only. For per-code (not app-based) UK/NL coverage, 5sim works as a one-shot.

Can I make outbound calls from a second phone number app?

Most paid apps include outbound calling: Hushed, Burner, Sideline, TextNow Premium, TextFree Plus, Google Voice. TwoLine focuses on receive-SMS and doesn't include outbound calling on the rental — if you'll text and call equally, pair TwoLine for SMS with another app for calls, or pick Hushed/Sideline for both in one app.

Is Hushed lifetime really lifetime?

With caveats. Hushed's $99 lifetime tier reclaims the number after 90 days of inactivity per their published Terms of Service. Send one SMS or make one call per quarter and the number stays yours. Skip a quarter and the number returns to the pool. Set a calendar reminder. Over 5+ years of weekly use, $99 beats every monthly competitor on price.

Why did my second phone number get banned by WhatsApp/Tinder/Bank?

Strict-checking platforms (WhatsApp, Tinder, banks, Wise, marketplaces) run secondary review on numbers within 24–72 hours of signup. If the carrier route classifies as consumer VoIP — common for free apps and the cheapest paid tiers — the platform bans the account silently. Paid non-VoIP rentals pass at higher rates (3–4/4 in testing) versus free apps (1/4). For strict platforms, pay for routing class.

Can I use a second phone number app for banking 2FA?

Mostly no. Banks run carrier-class filters via Twilio Lookup or similar; consumer VoIP and most rental routing fails these checks. Some smaller fintech apps accept paid second-line apps; large banks (Chase, Bank of America, etc.) reject them. For banking 2FA, use a real SIM. If banking privacy is the goal, that's a separate problem second-line apps don't solve.

How do I switch from TextNow to a paid second phone number app?

Three steps: (1) Pick the paid app that fits your use case (Hushed for US/Canada, TwoLine for multi-country, Sideline for business). (2) Sign up and rent a new number — paid apps don't transfer your existing TextNow number. (3) Update any apps you'd verified with TextNow to the new number, knowing some platforms (banking, dating) may force re-verification. Don't try to keep the TextNow number after switching — its routing class is the original problem.

Will my second phone number show up on caller ID?

Yes, with the rental number, not your real cell. Paid apps display the rented number to recipients on outbound calls and texts; recipients can reply or call back to that number, which routes to your second-line app. Free apps work the same way for the calls they support. Some platforms (banks, some businesses) display the carrier classification alongside the number, which is how they detect rental routing — but the number itself is what gets displayed.

The summary

Priya's six lost business hours weren't from the app pricing — they were from the assumption that "international" meant "actually international." Don't make the same mistake.

1. One SMS code, throw away: VerifySMS at $0.42. Stripe, 15-minute auto-refund.
2. US/Canada with $99 lifetime upside: Hushed lifetime at $99. Set a 90-day reminder.
3. US monthly under $10: TwoLine at $6.99/mo. Cancel anytime.
4. UK or Netherlands: TwoLine at $9.99/$11.99. Only multi-country option here.
5. Outbound calling matters: Sideline for business or Hushed for personal.

Five paths, one pick per situation. Pick by what you'll do with the second number daily, not by which app has the most installs.

A note on TwoLine's age: I built TwoLine and it's six weeks old as of this writing. If you need 5+ year confidence in the provider's continued existence, Hushed (nine years operating history) is the safer bet. TwoLine's value is the multi-country coverage and the price; Hushed's value is the operating track record and the lifetime tier. Both are honest products targeting different parts of the second-phone-number-app market.

About this article

Written by Serhat Doğan, founder of TwoLine. London-based software developer building SMS verification tools full-time since early 2026. Previously worked in consumer apps and digital infrastructure. Disclosure: I built TwoLine. I'm also part of the team building VerifySMS, a sister brand focused on pay-per-SMS verification. Both products show up in this guide because they fit two different sub-niches inside the second-phone-number search — TwoLine for monthly multi-country app rentals, VerifySMS for one-shot codes.

Methodology: 7 apps tested between April 1 and April 30, 2026. n=28 verification attempts across 7 apps (4 attempts each across WhatsApp, Discord, Telegram, Tinder). Outbound calling and texting tested separately on apps that support those features. Sample size is small per app — directional, not statistical. User anecdote details lightly fictionalized for privacy. Pricing verified against each provider's published pricing page on April 28, 2026.

Last reviewed: May 4, 2026. Next review: June 4, 2026.

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