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Mobile Development · head to head

Firebase vs Superwall

Firebase logo

Firebase

Mobile Development

Google's platform for building web and mobile applications with cloud backend

From
Free
Rated
-
Full reviewWebsite
Superwall logo

Superwall

Mobile Development

Remotely configured mobile paywalls that can be tested and changed without shipping an app update

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Firebase spark plan limited to 1 GiB storage, 50,000 daily reads, 20,000 daily writes; Superwall it does not manage entitlements or validate receipts, so most teams still pay a subscription infrastructure vendor as well and carry the cost and complexity of two systems.
  • They diverge on capability: Firebase covers Real-time Database, Superwall covers Server driven paywalls.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Firebase and Superwall actually diverge.

Attributes where Firebase and Superwall differ
AttributeFirebaseSuperwall
Pricing modelfreemiumPer month by tracked revenue
PlatformsiOS, Android, Web, Flutter, C++, UnityiOS, Android
Founded1998Unknown

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

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 Firebase

  • Real-time Database
  • REST API
  • Authentication
  • Google Cloud
  • Cloud functions
  • Cloud Storage
  • Web support
  • Mobile support

Only in Superwall

  • Server driven paywalls
  • Paywall experiments
  • Audience rules
  • No release cycle dependency
  • Revenue analytics
  • Paywall editor

What people use each for

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

Firebase

  • Mobile app backend developmentnot Superwall
  • Real-time data synchronisationnot Superwall
  • Web application backendnot Superwall
  • Cross-platform app developmentnot Superwall

Superwall

  • A subscription app whose paywall conversion rate is the main lever on revenuenot Firebase
  • Teams blocked by App Store review times from testing pricing and copy at a useful cadencenot Firebase
  • Showing different paywalls by acquisition channel, region or user behaviournot Firebase
  • Letting design and growth staff change paywalls without consuming engineering sprintsnot Firebase

Where each one falls short

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

Firebase

  • Spark plan limited to 1 GiB storage, 50,000 daily reads, 20,000 daily writes
  • Spark plan restricts to 100 concurrent database connections
  • Spark plan limits Firebase Studio to 3 workspaces maximum
  • Document size capped at 1 MiB per document
  • Transaction time limited to 270 seconds with 60-second idle expiration
  • Maximum 100 databases per project (increase requires support request)

Superwall

  • It does not manage entitlements or validate receipts, so most teams still pay a subscription infrastructure vendor as well and carry the cost and complexity of two systems.
  • Pricing scales with tracked subscription revenue, which means the tool becomes more expensive precisely as it succeeds, and that cost sits on top of the store's own commission.
  • A server driven paywall adds a network dependency to the moment of purchase; the fallback paywall bundled in the app must be maintained or a connectivity failure costs a sale.
  • Statistically valid paywall experiments need substantial traffic, so small apps will run tests that never reach significance and will be tempted to act on noise.
  • The visual editor covers common paywall patterns, and anything unusual in layout or animation still requires native work, which reduces the promised independence from engineering.

Pricing, plan by plan

Firebase

Free
  • SparkFree
    • No-cost usage with daily-refreshing quotas
    • Cloud Firestore: up to 1 GB storage, 20K writes/day, 50K reads/day
    • Cloud Functions: up to 2M invocations/month, 400K GB-seconds/month
  • Blaze$null/variable
    • Pay-as-you-go usage beyond free tier
    • Cloud Firestore: $5/GB after 1 GB, writes beyond 20K/day at overage rates
    • Cloud Functions: $0.40 per million invocations beyond 2M/month, $0.12/GB for outbound networking beyond 5 GB/month

Superwall

Free
  • Free tier$undefined/month
    • Full paywall and experiment functionality below a monthly tracked revenue threshold
    • Intended to carry an app until subscription revenue is material
  • Paid tiers$undefined/month
    • Priced against monthly tracked subscription revenue, so cost rises as the app earns more
    • Charged in addition to any subscription infrastructure vendor you also run

Which should you pick?

Choose Firebase if

  • You need real-time database.
  • You want to start without paying.
  • You work on iOS, Android, Web, Flutter, C++, Unity.
  • You also want rest api.
Firebase review

Choose Superwall if

  • You need server driven paywalls.
  • You want to start without paying.
  • You work on iOS, Android.
  • You also want paywall experiments.
Superwall review

Questions people ask

Is Firebase or Superwall better?
Neither clearly leads. Firebase starts at Free and Superwall at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Firebase or Superwall?
Firebase starts at Free and Superwall at Free.
Does Firebase or Superwall run on more platforms?
Firebase runs on iOS, Android, Web, Flutter, C++, Unity. Superwall runs on iOS, Android.
Can I use Firebase for free?
Both have a free tier, so you can try either at no cost before committing.
What is Firebase best used for?
Firebase is most often used for mobile app backend development, real-time data synchronisation, web application backend, cross-platform app development. Of those, mobile app backend development and real-time data synchronisation are not what Superwall is typically brought in for.
What can Firebase do that Superwall cannot?
Firebase covers Real-time Database, REST API, Authentication, Google Cloud. Superwall covers Server driven paywalls, Paywall experiments, Audience rules, No release cycle dependency.

Answered from the vendors’ own pages

Firebase: What are Firebase's free tier limits?

Firebase Spark plan includes no-cost daily-refreshing quotas: Cloud Firestore up to 1 GB storage with 20K writes and 50K reads per day; Cloud Functions up to 2M invocations monthly; Cloud Storage 5 GB-months with 100 GB downloads monthly; Hosting 10 GB storage and 360 MB daily data transfer; Realtime Database up to 1 GB storage. No payment method required.

Source
Superwall: Do we still need RevenueCat or StoreKit?

Yes in nearly all cases. Superwall presents and tests the paywall; something else must own entitlements and receipts.

Firebase: How much does Firebase Blaze plan cost?

Firebase Blaze is pay-as-you-go beyond free tier limits. Pricing includes Cloud Firestore storage at $5/GB after 1 GB; Cloud Functions $0.40 per million invocations beyond 2M monthly; Cloud Storage $0.026/GB beyond 5 GB; Hosting $0.15/GB beyond 360 MB daily. New eligible customers receive $300 free credit.

Source
Superwall: Does Apple allow remotely configured paywalls?

Yes. Configuring presentation remotely is normal; the purchase itself still goes through the store billing APIs.

Firebase: Which Firebase services are always free regardless of tier?

A/B Testing, Analytics, App Check, Cloud Messaging, and Crashlytics are offered at no cost on both Spark and Blaze plans, with no usage limits stated.

Source
Superwall: How much traffic is needed for useful tests?

Enough paywall impressions per variant to detect a few percentage points of conversion difference. Below a few thousand a week, results will mislead.

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