Comparison

Numero vs Spectra Protocol

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

Head to head
About

Numero

Get a second phone number for calls and texts, or purchase travel eSIMs for data connectivity abroad. Make affordable international calls and manage your communication needs all in one place.

Highlights
  • Virtual phone numbers
  • Travel data eSIMs
  • Affordable international calls
  • SMS and call forwarding
  • Voicemail
  • WhatsApp compatible numbers
Features
Read full description

Numero provides virtual numbers, travel eSIMs, and affordable international calls in one app. 2ND VIRTUAL NUMBERS Need another mobile number or landline for work, travel, business, WhatsApp Business, marketplace chats, freelance, toll free, or privacy? Numero lets you add second or multiple numbers without switching or removing your SIM. Choose numbers from many countries, including the USA. Virtual numbers work through the cloud anywhere in the world. Choose a number to: • Receive SMS and calls only. • Receive and send SMS and make calls. Add credit later if you need outgoing SMS or calling. WhatsApp: Not every Numero number supports WhatsApp. If you need WhatsApp, choose a number from the dedicated WhatsApp-compatible section in the app. Toll-free numbers let customers call you without call charges. Numero toll-free numbers offer up to 5 lines, no setup fees, low number costs, no long-term commitment, and affordable outgoing calls. TRAVEL DATA & FULL eSIMs Going abroad and don't want expensive roaming, SIM swapping, store searches, or removing your SIM? Manage your connectivity in Numero. Choose from these data eSIMs: • Local eSIMs for single-country trips. • Regional eSIMs for multi-country trips. • Global eSIMs covering 120+ countries in one eSIM. • Unlimited eSIMs, terms apply. Activate before you fly by scanning a QR code, then connect after landing. A Data eSIM is data-only: no phone number for regular calls or SMS. You can still call and message through internet apps such as WhatsApp, Telegram, and FaceTime. A Full eSIM combines a real phone number, mobile data, SMS, and calling minutes, letting you call, text, and browse from one eSIM. AFFORDABLE INTERNATIONAL CALLING Want to stay connected to home without expensive roaming? Numero lets you call mobile phones and landlines internationally at affordable rates. Call from your primary or second number. Forward incoming calls to a local or international second number to help avoid roaming charges. VoIP calls require internet. On the other hand, the person you call doesn’t need Numero or internet connection. Calling options: • Limited-time calling offers. • Local calling plans for supported countries; a local virtual number is required. • EU Calling plans with UK virtual numbers and up to 70% discounts on supported destinations. CALL FORWARDING & VOICEMAIL Don't want calls interrupting your vacation or risk missing them? Forward calls to your second number, another person's number, or voicemail. PLANS, SUPPORT & REFERRALS Phone numbers are available with 1, 3, or 12 month subscription options. Auto-renewal is ON by default. To cancel a phone number subscription, use the method that matches your payment method: • App Store: manage or cancel through the store. • Stripe / Numero Money: open Numero and go to the number linked to the subscription. • Website: manage or cancel through the website. Get 24/7 Customer Support. Refer a friend: share your link and earn Numero Money when they buy an eSIM. Friends get €3 off. Sign up with your number and start using Numero! Email: support@numeroesim.com Instagram & Facebook: @numeroglobal Privacy Policy: https://www.numeroesim.com/privacy-policy/ Terms of Use: https://www.numeroesim.com/terms-and-conditions

About

Spectra Protocol

This app offers a secure, privacy-focused messaging and self-custody wallet experience. It uses wallet-based identity for communication and allows users to manage digital assets securely from their device.

Highlights
  • Wallet-linked identity
  • End-to-end encrypted messaging
  • Secure voice and video calls
  • Self-custody wallet
  • Biometric app protection
  • Offline encrypted relay
Read full description

Spectra is a privacy-focused messaging and self-custody wallet app built for secure communication and user-controlled identity. Create or import your wallet, unlock with PIN or Face ID, and use your wallet as your account identity. Send encrypted direct messages and media, make secure voice and video calls, and manage supported digital assets from your own device. Spectra combines wallet-based authentication, end-to-end encrypted messaging, encrypted media, optional Bluetooth relay for nearby/offline delivery, and privacy-focused network features where available. Key features: - Wallet-linked identity without traditional email/password login - End-to-end encrypted direct messages and media - Secure voice and video calls - Self-custody wallet support - PIN and biometric app protection - Optional nearby/offline encrypted relay - Privacy-focused design with no advertising trackers Spectra is designed for users who want private communication, personal control over their identity, and secure access to wallet-based features.

Screenshots

Numero4 screens
Spectra Protocol4 screens

Verdict

The call

The clearest difference is rating: Spectra Protocol at 5.0 against Numero's 4.0. Spectra Protocol also leads on in-app purchases (none vs 10) and ads (none vs shown). Numero's advantage is ratings volume (4.5K vs 3) and chart position (#188 vs unranked). On price, review sentiment, device support and iOS requirement 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. Numero sells 9 in-app purchases, starting at $3.49 per month. Spectra Protocol asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Spectra Protocol holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: Numero has 4.5K ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 58% of Numero's written reviews are positive against 50% of Spectra Protocol's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Numero ships an update fortnightly, Spectra Protocol weekly. The most recent releases landed on November 8, 2026 and October 31, 2026 respectively.

Scorecard7 real differences · 4 level
Numero versus Spectra Protocol: the parameters behind the verdict, then further details
ParameterNumeroSpectra Protocol
PriceFreeFree
Rating4.0 (4.5K ratings)5.0 (3 ratings) — better
Positive reviews57.6% of reviews — better50.0% of reviews
Number of ratings4.5K — better3
Update frequencyFortnightlyWeekly — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
Best chart rank#188 — better—
DevicesiPhone, iPodiPhone, iPod
Requires iOS15.615.1 — better
Further details — not scored
Size302 MB87 MB
Age rating4+17+
DeveloperSmarteletec S.L.Mozaga Foundation

Customer experience

Numero

All ratings4,510 ratings
Positive72.8%
Neutral3.9%
Negative23.3%
Written reviews1,825 reviews
Positive57.6%
Neutral2.5%
Negative39.8%

Spectra Protocol

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

Bugs and requests

Numero

Reported bugs

4 issues
  • Numbers not working as advertised
  • Inability to receive calls and messages
  • App crashes and freezes frequently
  • Billing and subscription issues

Requested features

4 requests
  • Improve app stability and performance
  • Provide clear and transparent pricing information
  • Enhance customer support and communication
  • Offer more reliable and consistent service

Spectra Protocol

Not enough reviews yet to summarise bugs or requests.

In-app purchases

9 purchases

Numero

Subscriptions5
  • USA Mobile Number Monthly Plan$3.491 Month
  • Numero - €5 WhatsApp2 variants$3.491 Month
  • Numero - €4 Package$4.491 Month
Show 2 more
  • Numero - €5/M Package - Online$4.991 Month
  • USA Mobile Number Annual Plan$18.991 Year
One-time4
  • Numero €1 Recharge$0.99
  • Numero €2 Local Minutes Plan$1.99
  • Numero €2 Recharge$2.99
Show 1 more
  • Numero €5.00 Recharge$6.99
None

Spectra Protocol

No in-app purchases

Questions

Is Numero free?
Numero is free to download, with in-app purchases available.
Is Spectra Protocol free?
Spectra Protocol is free to download, with no in-app purchases.
Which has better reviews, Numero or Spectra Protocol?
Spectra Protocol is rated higher. Numero averages 4.0 out of 5 from 4.5K ratings, while Spectra Protocol averages 5.0 from 3 ratings.
Do Numero or Spectra Protocol have ads?
Numero shows ads; Spectra Protocol does not.
Which is updated more often, Numero or Spectra Protocol?
Numero ships an update fortnightly, and Spectra Protocol weekly. Most recently, Numero was updated on November 8, 2026 and Spectra Protocol on October 31, 2026.

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