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Communication · head to head

Novu vs Viber

Novu logo

Novu

Communication

Open-source notification infrastructure for multi-channel messaging

From
Free
Rated
-
Full reviewWebsite
Viber logo

Viber

Communication

Messaging app with its strongest user base in Eastern Europe and the Philippines, owned by Japans Rakuten

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Novu free plan activity feed retention is limited to 24 hours, restricting how far back teams can debug delivery issues.; Viber viber has limited relevance outside its strong regions, so building a communication strategy around it in North America or most of Western Europe reaches almost nobody.
  • They diverge on capability: Novu covers Multi-channel workflows, Viber covers End to end encryption.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Novu and Viber actually diverge.

Attributes where Novu and Viber differ
AttributeNovuViber
Pricing modelfreemiumFree to download, paid business messaging and out calls to landlines and mobiles
Platformsweb, apiiOS, Android, Windows, macOS, Web

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Communication).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Novu

  • Multi-channel workflows
  • Advanced email editor
  • Activity feed
  • Multi-environment support
  • Role-based access control
  • Self-hosting

Only in Viber

  • End to end encryption
  • Communities
  • Viber Business Messages
  • Free calling
  • Self-destructing messages
  • Rakuten integration

What people use each for

The jobs each tool is most often brought in to do.

Novu

  • Building multi-channel notification workflows for a SaaS productnot Viber
  • Self-hosting notification infrastructure for data controlnot Viber
  • Managing separate notification environments for staging and productionnot Viber
  • Tracking notification delivery history and activitynot Viber

Viber

  • A business communicating with customers in Eastern Europe or the Philippines where Viber, not WhatsApp, is the default appnot Novu
  • An individual making cheap international calls to family in a Viber-strong market before switching entirely to data callingnot Novu
  • A brand running a Community channel to reach an established Viber audience in a specific countrynot Novu
  • Someone wanting end to end encrypted chat on by default without configuring anythingnot Novu

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Novu

  • Free plan activity feed retention is limited to 24 hours, restricting how far back teams can debug delivery issues.
  • Overage on Pro and Team plans is billed at $1.20 per 1,000 additional workflow runs, which can add up at scale.
  • HIPAA BAA compliance and dedicated SSO are Enterprise-only and require custom pricing.

Viber

  • Viber has limited relevance outside its strong regions, so building a communication strategy around it in North America or most of Western Europe reaches almost nobody.
  • Ownership by Rakuten ties the app to a commerce and points ecosystem, and account data can be linked to Rakuten services in markets where that integration is active.
  • Business Messages pricing is metered per message, so a company sending high volumes of promotional content can find costs rise quickly compared with a flat fee model.
  • Viber has lost share even in some of its historically strong markets to Telegram and WhatsApp, so its regional dominance is not guaranteed to persist.
  • The desktop client depends on the phone app remaining active and connected, which is a limitation for anyone wanting a fully independent desktop messenger.

Pricing, plan by plan

Novu

Free
  • FreeFree
    • 10,000 workflow runs/month
    • All channels included
    • Up to 20 workflows
  • Pro$30/month
    • 30,000+ workflow runs/month
    • Advanced email editor
    • Remove Novu branding
  • Team$250/month
    • 250,000+ workflow runs/month
    • Up to 10 environments
    • 90-day activity feed retention

Viber

Free
  • ViberFree
    • Free messaging and calling between Viber users
    • Viber Out charges per minute for calls to non-Viber phone numbers
    • Business Messages priced per message sent to businesses on a metered basis

Which should you pick?

Choose Novu if

  • You need multi-channel workflows.
  • You want to start without paying.
  • You work on web, api.
  • You also want advanced email editor.
Novu review

Choose Viber if

  • You need end to end encryption.
  • You want to start without paying.
  • You work on iOS, Android, Windows, macOS, Web.
  • You also want communities.
Viber review

Questions people ask

Is Novu or Viber better?
Neither clearly leads. Novu starts at Free and Viber at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Novu or Viber?
Novu starts at Free and Viber at Free.
Does Novu or Viber run on more platforms?
Novu runs on web, api. Viber runs on iOS, Android, Windows, macOS, Web.
Can I use Novu for free?
Both have a free tier, so you can try either at no cost before committing.
What is Novu best used for?
Novu is most often used for building multi-channel notification workflows for a saas product, self-hosting notification infrastructure for data control, managing separate notification environments for staging and production, tracking notification delivery history and activity. Of those, building multi-channel notification workflows for a saas product and self-hosting notification infrastructure for data control are not what Viber is typically brought in for.
What can Novu do that Viber cannot?
Novu covers Multi-channel workflows, Advanced email editor, Activity feed, Multi-environment support. Viber covers End to end encryption, Communities, Viber Business Messages, Free calling.

Answered from the vendors’ own pages

Novu: What does Novu cost?

Novu offers a Free plan for 10,000 workflow runs per month, Pro from $30/month for 30,000+ runs, Team from $250/month for 250,000+ runs, and custom Enterprise pricing for 10M+ runs.

Source
Viber: Is Viber end to end encrypted?

Yes, by default for one-to-one and group chats, unlike Telegram where it is opt-in for secret chats only.

Novu: Is there a free plan, and what are its limits?

Yes, the Free plan includes 10,000 workflow runs per month, all messaging channels, up to 20 workflows, 2 environments, and up to 3 team members.

Source
Viber: Is Viber popular in the United States?

No, it has a comparatively small footprint there. Its real strength is in specific markets including parts of Eastern Europe and the Philippines.

Novu: How is usage metered?

Billing is based on the number of workflow runs per month rather than per user or per message, with overage on paid plans charged at $1.20 per 1,000 additional runs.

Source
Viber: Who owns Viber?

Rakuten Group, a Japanese e-commerce and internet services company, which bought Viber in 2014.

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