Comparison

Red Phone vs SLYNUMBER

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Red Phone

This app allows you to set a specific phone number for one-touch dialing directly from your home screen. Once configured, a single tap initiates a call to your chosen contact. You can easily change the number through the app's preferences.

Highlights
  • One-touch calling
  • Home screen shortcut
  • Customizable phone number
  • Easy number changes
  • Speed dialing functionality
Features
Read full description

Red Phone - the One Touch Call App Presidents around the world, Stargate®-General Hammond or Batman® use it. Now, it's also available for iPhone. How it works: 1) The first time the app is launched, a specific phone number can be selected. 2) After that, you can do one-click calls from your home screen to the selected number. 3) If you want to change the phone number, you have to switch on the edit toggle in Preferences -> Red Phone. Enjoy this great, helpful App!

About

SLYNUMBER

Get a real, private mobile number for calls and texts without a carrier contract. Protect your personal information and separate your communications for business, dating, or travel.

Highlights
  • Real mobile numbers, not VoIP
  • Unlimited inbound calls & texts
  • 100 outbound credits monthly
  • Privacy and anonymity
  • Spam blocking & do-not-disturb
  • AI-powered features
  • eSIM for global data
Features
Read full description

NOT TO BRAG, WE ARE THE BEST SLYNUMBER is not just another second number app. SLYNUMBER is the ONLY provider on the market to offer real mobile numbers. We don't provide VoIP, fake phone numbers, or second lines that only work for a week. This distinction is crucial because many apps and online services do not accept VoIP numbers. SLYNUMBER works everywhere! To put is simply - unless you're willing to sign up with a major carrier like T-Mobile, Verizon, or AT&T and commit to an expensive plan with a SIM card and monthly bills, we are your ONLY alternative for obtaining an actual mobile number. Moreover, we prioritize your privacy and anonymity, allowing you to share your number with strangers, clients, acquaintances, blind dates, or anyone else without the fear of being tracked or spied on. HOW SLYNUMBER WORKS Setting up SLYNUMBER is fast and easy! Simply, download the app onto your phone, pick your number and start calling and texting. SLYNUMBER can do everything your primary mobile number can but with added privacy and some really cool features. We offer the most reliable and fully featured virtual phone number app available, with calling & texting features that include free toll-free calls, blocking, muting, and do-not-disturb mode, caller name & ID settings, SlyAI (running on ChatGPT-4), call forwarding, and number porting. And now we also offer an eSIM feature that will allow you to activate cellular data anywhere in the world. We are you one-stop shop for all things mobile. Use it for: -Privacy & keeping your information safe -Separating personal and transactional numbers -Your business needs -Job applications -Traveling abroad -Communicating freely with spam blocking & muting -Setting boundaries with do-not-disturb settings -Online or in-person dating Your private phone number can be risky if it falls into the wrong hands. Our main protective measure is ensuring that SLYNUMBER does not gather any personal information apart from what is required for processing payments, which remains inaccessible. Using SLYNUMBER, you can establish barriers through features like spam call blocking and do-not-disturb settings to guarantee that you always have control over your communications. PLANS & PRICING SLYNUMBER is a subscription-based app, offering you two simple ways to enjoy a second mobile number & complete privacy that comes with it. 3-MONTH BASE PLAN: $4.99/mo (billed every 3 months at $14.99). The plan includes unlimited inbound calling and texting and 100 monthly outbound credits for calling and texting ANNUAL PLAN: $4.18/mo (billed annually at $49.99) The plan includes unlimited inbound calling and texting and 100 monthly outbound credits for calling and texting ADDITIONAL OUTBOUND CREDITS: 1000 credits for $10 (1 credit equals to 1-min call or 1 text message) SUBSCRIPTION DETAILS All subscriptions include unlimited inbound calls and texts, and 100 outbound credits (1 credit equals to 1-min call or 1 text message). If credits are used additional outbound credits may be purchased. Subscriptions automatically renew unless canceled. Subscriptions can be managed by the user through the app. For any further assistance, contact support@slynumber.com International calling rates vary based on the country you're calling. THE FINE PRINT Privacy Policy: https://slynumber.com/privacy-policy.html Terms of Use: https://slynumber.com/terms.html IMPORTANT: Please review our pricing before purchasing - SLYNUMBER has no free trial period. Outbound phone calls and text messages require an additional purchase of credits. Area code availability varies.

Screenshots

Red Phone2 screens
SLYNUMBER4 screens

Verdict

The call

The clearest difference is rating: SLYNUMBER at 4.5 against Red Phone's 1.7. SLYNUMBER also leads on update cadence (every 2 weeks vs every 12 months) and ratings volume (2.6K vs 3). Red Phone's advantage is in-app purchases (none vs 8) and iOS requirement (10.0 vs 17.0). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. SLYNUMBER sells 8 in-app purchases, starting at $10.00 per year. Red Phone asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

SLYNUMBER holds the better App Store score, 4.5 against 1.7. That said, the two scores are not equally well evidenced: SLYNUMBER has 2.6K ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 20% of Red Phone's written reviews are positive against 33% of SLYNUMBER's.

UpkeepUpdate frequency

Red Phone ships an update every 12 months, SLYNUMBER every 2 weeks. The most recent releases landed on October 23, 2026 and October 30, 2026 respectively.

Scorecard8 real differences · 3 level
Red Phone versus SLYNUMBER: the parameters behind the verdict, then further details
ParameterRed PhoneSLYNUMBER
PriceFreeFree
Rating1.7 (3 ratings)4.5 (2.6K ratings) — better
Positive reviews19.7% of reviews33.3% of reviews — better
Number of ratings32.6K — better
Update frequencyEvery 12 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterSubscription
Best chart rank—#182 — better
DevicesiPhone, iPodiPhone, iPad
Requires iOS10.0 — better17.0
Further details — not scored
Size21 MB96 MB
Age rating4+4+
DeveloperEmoji Apps GmbHMobileSphere, Ltd

Customer experience

Red Phone

All ratings3 ratings
Positive0.0%
Neutral33.3%
Negative66.7%
Written reviews61 reviews
Positive19.7%
Neutral3.3%
Negative77.0%

SLYNUMBER

All ratings2,556 ratings
Positive87.4%
Neutral3.7%
Negative9.0%
Written reviews222 reviews
Positive33.3%
Neutral8.6%
Negative58.1%

Bugs and requests

Red Phone

Not enough reviews yet to summarise bugs or requests.

SLYNUMBER

Reported bugs

4 issues
  • App won't load past the launch screen
  • Incoming calls have no audio
  • Text messages fail to deliver
  • Subscription issues and inability to cancel

Requested features

4 requests
  • Add ability to send and receive pictures and videos
  • Improve app stability and reduce crashes
  • Provide better customer support and communication
  • Offer more affordable pricing options

In-app purchases

None

Red Phone

No in-app purchases

8 purchases

SLYNUMBER

Subscriptions3
  • Global eSIM data plan$10.001 Year
  • Three-Month Plan$14.993 Months
  • Yearly Plan$49.991 Year
One-time5
  • SLYNUMBER eSIM$3.00
  • 10 Dollar Credit Bundle$10.00
  • 25 Dollar Credit Bundle$25.00
Show 2 more
  • 50 Dollar Credit Bundle$50.00
  • 100 Dollar Credit Bundle$100.00

Questions

Is Red Phone free?
Red Phone is free to download, with no in-app purchases.
Is SLYNUMBER free?
SLYNUMBER is free to download, with in-app purchases available.
Which has better reviews, Red Phone or SLYNUMBER?
SLYNUMBER is rated higher. Red Phone averages 1.7 out of 5 from 3 ratings, while SLYNUMBER averages 4.5 from 2.6K ratings.
Do Red Phone or SLYNUMBER have ads?
Neither Red Phone nor SLYNUMBER shows ads.
Which is updated more often, Red Phone or SLYNUMBER?
Red Phone ships an update every 12 months, and SLYNUMBER every 2 weeks. Most recently, Red Phone was updated on October 23, 2026 and SLYNUMBER on October 30, 2026.

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