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Mobile Development · head to head

Adapty vs Firebase

Adapty logo

Adapty

Mobile Development

In-app subscription and paywall platform, free below 5,000 USD of monthly revenue then 1 percent, with add-ons charged separately

From
Free
Rated
-
Full reviewWebsite
Firebase logo

Firebase

Mobile Development

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

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Adapty the 1 percent headline is only the base rate; Refund Saver at 0.2 percent of revenue, Ads Manager at 3.5 percent of ad spend, Attribution at 0.03 USD per install and Adapty Mail at a 20 percent revenue share stack on top and are individually easy to switch on.; Firebase spark plan limited to 1 GiB storage, 50,000 daily reads, 20,000 daily writes
  • They diverge on capability: Adapty covers Visual paywall builder, Firebase covers Real-time Database.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Adapty and Firebase actually diverge.

Attributes where Adapty and Firebase differ
AttributeAdaptyFirebase
Pricing modelPer month by tracked revenuefreemium
PlatformsiOS, Android, Web, React Native, FlutteriOS, Android, Web, Flutter, C++, Unity
FoundedUnknown1998

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 Adapty

  • Visual paywall builder
  • A/B testing on paywalls
  • Cross-platform entitlements
  • Subscription analytics
  • Refund Saver add-on
  • Attribution and Ads Manager add-ons

Only in Firebase

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

What people use each for

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

Adapty

  • A growth marketer who needs to test paywall pricing weekly without an engineering ticket or an app releasenot Firebase
  • A small subscription app that wants to stay free longer than the 2,500 USD threshold offered by the main competitornot Firebase
  • Consolidating subscription analytics and paywall experimentation in one place rather than wiring an analytics tool to a billing SDKnot Firebase
  • Automating Apple refund responses where a measurable share of revenue is lost to refund requestsnot Firebase

Firebase

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

Where each one falls short

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

Adapty

  • The 1 percent headline is only the base rate; Refund Saver at 0.2 percent of revenue, Ads Manager at 3.5 percent of ad spend, Attribution at 0.03 USD per install and Adapty Mail at a 20 percent revenue share stack on top and are individually easy to switch on.
  • Revenue is calculated before platform fees, so the fee applies to money Apple and Google have already taken a 15 to 30 percent cut of, making the effective rate on received cash noticeably higher than the quoted figure.
  • Adapty Mail at a 20 percent revenue share is a large ongoing cost for a channel most teams would otherwise run through an email platform they already pay a flat fee for.
  • The integration ecosystem, third-party tutorials and hiring pool are smaller than the category leader, so engineers are less likely to have used it before and edge cases have fewer public answers.
  • Paywall configuration and entitlement state live with the vendor, so a migration later means rebuilding both the billing integration and every paywall the marketing team has created.

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)

Pricing, plan by plan

Adapty

Free
  • Pro under thresholdFree
    • Free until monthly revenue reaches 5,000 USD
    • All core features, no tiers and no fixed costs
    • Paywall builder and A/B testing included
  • Pro$undefined/month
    • 1 percent of monthly revenue above the 5,000 USD threshold
    • Refund Saver adds 0.2 percent of monthly revenue
    • Ads Manager adds 3.5 percent of monthly ad spend
  • Enterprise$undefined/year
    • Quoted
    • White-glove onboarding
    • 24/7 dedicated Slack support and a success manager

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

Which should you pick?

Choose Adapty if

  • You need visual paywall builder.
  • You want to start without paying.
  • You work on iOS, Android, Web, React Native, Flutter.
  • You also want a/b testing on paywalls.
Adapty review

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

Questions people ask

Is Adapty or Firebase better?
Neither clearly leads. Adapty starts at Free and Firebase at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Adapty or Firebase?
Adapty starts at Free and Firebase at Free.
Does Adapty or Firebase run on more platforms?
Adapty runs on iOS, Android, Web, React Native, Flutter. Firebase runs on iOS, Android, Web, Flutter, C++, Unity.
Can I use Adapty for free?
Both have a free tier, so you can try either at no cost before committing.
What is Adapty best used for?
Adapty is most often used for a growth marketer who needs to test paywall pricing weekly without an engineering ticket or an app release, a small subscription app that wants to stay free longer than the 2,500 usd threshold offered by the main competitor, consolidating subscription analytics and paywall experimentation in one place rather than wiring an analytics tool to a billing sdk, automating apple refund responses where a measurable share of revenue is lost to refund requests. Of those, a growth marketer who needs to test paywall pricing weekly without an engineering ticket or an app release and a small subscription app that wants to stay free longer than the 2,500 usd threshold offered by the main competitor are not what Firebase is typically brought in for.
What can Adapty do that Firebase cannot?
Adapty covers Visual paywall builder, A/B testing on paywalls, Cross-platform entitlements, Subscription analytics. Firebase covers Real-time Database, REST API, Authentication, Google Cloud.

Answered from the vendors’ own pages

Adapty: How much does it cost above the free threshold?

1 percent of monthly revenue, measured in USD before platform fees, with billing starting once you exceed 5,000 USD in a 30 day period.

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
Adapty: Is the free tier really more generous than RevenueCat?

On the base product yes, 5,000 USD against 2,500 USD of monthly revenue, but add-ons are priced separately where the competitor bundles more into its single rate.

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
Adapty: Can marketing change paywalls without a release?

Yes, that is the main reason teams choose it; paywalls are configured server side and published without going through app review.

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
Adapty: What does Refund Saver actually do?

It responds to Apple refund requests with transaction evidence to contest them, and it costs an additional 0.2 percent of monthly revenue.

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