Every free payments tier that clears our bar in 2026: 12 offers meet the criteria and 0 offers are demoted with a named reason. Verified pricing, recorded changes, and a published ranking method.
Hosted backend for in-app purchases and subscriptions (iOS and Android). Free up to $2.5k/mo in tracked revenue.
One-stop solution with open-source SDK for mobile in-app subscription integration to iOS, Android, React Native, Flutter, Unity, or web app. Free for apps earning under $5,000/month (rolling 30-day revenue); Pro tier charges 1% of monthly revenue above the $5K threshold.
Reliable Exchange Rates and Currency Conversion for your Business, 100 API requests/month free.
Provides real-time and historical exchange rates. The free tier requires attribution.
Free currency conversion and exchange rate data API. Free 300 requests per month, 10 requests per minute for private use.
Provides cryptocurrency market data including the latest crypto and fiat currency exchange rates. The free tier offers 10K call credits/month.
Generate revenue from APIs via usage-based billing. Connect to Stripe, Chargebee, etc. The free tier offers 30,000 events/month.
Automatically adjust pricing based on visitor location to expand your business globally and reach new markets (purchasing power parity). The free plan includes 7,500 API requests/month.
An easy-to-use currency conversion JSON API. The free tier updates once per day with a limit of 1,500 requests/month.
All-in-one cross-platform subscription management platform offering analytics, A/B testing, Apple Search Ads, remote configs, and growth tools for optimizing in-app purchases and monetization. Compatible with iOS, Android, React Native, Flutter, Unity, Cordova, Stripe, and web. Free up to $10k in monthly tracked revenue. Best for open source projects.
Instant VAT number validation and EU VAT rates API, free 100 API requests/month
Nothing on this page is demoted today — we hold no disqualifying record against any of these offers.
| Vendor | Free Tier | Key Limits | Stability | Verified |
|---|---|---|---|---|
| RevenueCat | Free | Hosted backend for in-app purchases and subscriptions (iOS and Android). Free up to $2.5k/mo in tracked revenue. | stable | 2026-08-31 |
| Adapty.io | Free | One-stop solution with open-source SDK for mobile in-app subscription integration to iOS, Android, React Native, Flutter... | stable | 2026-09-09 |
| currencylayer | Free | Reliable Exchange Rates and Currency Conversion for your Business, 100 API requests/month free. | stable | 2026-08-14 |
| FxRatesAPI | Free | Provides real-time and historical exchange rates. The free tier requires attribution. | — | 2026-08-14 |
| Currencyapi | Free | Free currency conversion and exchange rate data API. Free 300 requests per month, 10 requests per minute for private use... | stable | 2026-08-11 |
| CoinMarketCap | Free | Provides cryptocurrency market data including the latest crypto and fiat currency exchange rates. The free tier offers 1... | stable | 2026-08-10 |
| Moesif API Monetization | Free | Generate revenue from APIs via usage-based billing. Connect to Stripe, Chargebee, etc. The free tier offers 30,000 event... | — | 2026-08-13 |
| ParityVend | Free | Automatically adjust pricing based on visitor location to expand your business globally and reach new markets (purchasin... | — | 2026-08-12 |
| Zoho Checkout | Free | Product Billing management with 3 pages & up to 50 payments. | stable | 2026-07-30 |
| exchangerate-api.com | Free | An easy-to-use currency conversion JSON API. The free tier updates once per day with a limit of 1,500 requests/month. | stable | 2026-08-30 |
| Qonversion | Free | All-in-one cross-platform subscription management platform offering analytics, A/B testing, Apple Search Ads, remote con... | stable | 2026-09-01 |
| vatlayer | Free | Instant VAT number validation and EU VAT rates API, free 100 API requests/month | stable | 2026-08-16 |
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