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The bottom line
One integration for multiple ramps, with paid plans and provider-level fees to weigh.
Onramper is a hosted ramp aggregator for apps, wallets and exchanges. It connects teams to 30+ onramps through one integration, with widget and headless options, offramps, swaps and routing recommendations.
Plans start at $199 monthly, or $150/month when billed annually; there is no free plan, but a 14-day trial is available. Reddit feedback is limited and mixed: one user reports integrating it, while commenters in another thread recommend buying through a centralized exchange because of fees.
Good fit if
- Wallets adding multiple fiat ramps
- Teams needing offramps and swaps
- Apps targeting multiple countries
Skip it if
- Teams requiring a free tier
- Projects needing self-hosted infrastructure
- Buyers optimizing only for lowest fees

ScoresHow it rates
What works
- One integration connects to 30+ onramps
- Offers widget and headless ramp flows
- Includes offramps and cross-chain swaps
- Routing considers price, conversion and KYC friction
- Premium includes a dedicated support agent
What doesn't
- No free plan; trial lasts 14 days
- Essentials covers six onramps, not the full network
- No published per-request pricing or overage schedule
- SDK languages and API protocol are not named
- Reddit commenters warn that fees can be high
01What Onramper is, technically
Onramper is a hosted fiat-to-crypto ramp aggregation service: apps, wallets and exchanges integrate once to connect users with multiple payment providers. It sits between your product and the ramp network, rather than acting as a crypto exchange, a client library or infrastructure you run yourself. The company describes a single API integration, along with a plug-and-play widget and headless ramps for teams that want control over the user interface.
The routing engine recommends providers using factors including price, expected conversion and KYC friction. The product suite also includes offramps, cross-chain swaps and Terminal, which provides conversion insights. Onramper says its network covers 30+ onramps, 175+ payment methods, 1,500+ cryptocurrencies and 190+ countries. Its homepage also mentions 130 payment methods in one section, so confirm current country, asset and payment-method coverage for your launch markets before you depend on those figures.
02Onramper API, SDKs and docs
The documented integration surfaces are a single API integration, an embeddable widget and headless ramps. The homepage says the widget can be embedded in roughly eight lines of code, and describes webhooks as a way to connect existing ramp integrations to Terminal for performance comparisons. It does not name an API protocol, SDK, programming language, CLI or plugin. Confirm SDK support and the API details in Onramper’s docs before choosing an implementation path.
The widget is the shortest route to a provider-backed purchase flow; headless ramps are for teams building a native interface with UI control. Onramper says provider, payment-method and compliance updates are handled by its team, reducing maintenance work on your side. You can also keep existing ramp integrations and add Onramper alongside them, rather than replacing them. Ask how the integration handles callbacks, errors, quote expiry and payment-provider failures, and whether the documented webhooks cover the events your product needs.
03Onramper pricing for developers
Onramper has no free plan. The pricing page lists a 14-day free trial. Essentials costs $199 monthly or $1,800 per year ($150/month) and includes six onramps and Terminal; it excludes Sardine, BTCDirect, Simplex, Revolut, Itez, Skrill Crypto and DFX. Premium costs $599 monthly or $5,750 per year ($479.17/month) and includes 30+ onramps, Terminal Pro, offramps, P2P, crypto-to-crypto swaps, a dedicated support agent and the ability to add your own fees.
White-Label includes Premium, a volume advantage and a fully white-labeled solution, but its price is not published. Optional add-ons include custom routing engines for $400/month, Terminal success and authorization analysis for $300/month, Terminal data segmentation and exports for $300/month, fee and spread analysis for $300/month, and bespoke data analysis for $200/month. These are fixed plan and add-on prices; the pricing details do not list per-request charges or overage rates. Ask how transaction volume, provider fees and any negotiated commercial terms affect your total bill.
04Onramper: open source, self-hosting and lock-in
Onramper is presented as a managed aggregation service, with a widget, API integration and headless ramp option. The vendor does not publish an open-source licence or say that the service can be self-hosted. Teams should treat the integration as dependent on Onramper unless the vendor confirms otherwise in writing.
The homepage describes Terminal exports as an add-on, but does not establish what data can be exported, in which formats, or whether you can retrieve all transaction and routing records. Ask about data ownership, retention, export access and what happens to active transactions if you leave. Migration would mean reconnecting to providers directly or selecting another aggregator; the effort depends on how much of your product relies on Onramper’s routing, widget and provider-specific flows. Keep your own transaction records and abstract provider-specific logic where practical.
05Onramper in production
Before launch, confirm rate limits, uptime commitments, incident support, webhook retry behavior and the handling of expired quotes or provider outages. The published pricing details do not include rate limits or a reliability commitment. Validate provider coverage and payment availability by country: an aggregated network does not mean every ramp supports every asset, payment method or user. The homepage says KYC can be reused across ramps, but teams should confirm which providers and jurisdictions support that flow and what compliance responsibilities remain with them.
The homepage presents smart routing around conversion, price and KYC friction, but gives no production success-rate figures. On Reddit, one user says they integrated Onramper into a website. In another thread, commenters advise using a centralized exchange instead, citing fees. That is anecdotal feedback, not a broad reliability assessment, but it flags a product decision: compare the full user cost and conversion path against direct ramps or exchange transfers. Test provider failures, refunds and support escalation paths before making the flow a critical dependency.
From the threadsWhat users say
The small amount of Reddit discussion is mixed. One user reports integrating Onramper, while commenters in a separate thread point to fees and recommend a centralized exchange instead.
Yes i even integrated it onto my own website www.buyanycrypto.com
yes onramper can do that
Fees will eat you. Buy it from a CEX
From from a cex and send it there simple and easy
Questions people ask
What does Onramper do?
Onramper connects apps, wallets and exchanges to multiple fiat-to-crypto onramps through one integration. It also offers offramps, swaps, routing recommendations, a widget, headless ramps and Terminal analytics.
How much does Onramper cost?
Essentials costs $199 monthly or $1,800 per year. Premium costs $599 monthly or $5,750 per year. White-Label pricing is not published. There is no free plan, but the pricing details list a 14-day free trial.
Does Onramper support existing ramp integrations?
Yes. Onramper says its API can sit alongside ramps you already use. It also describes connecting existing integrations to Terminal with webhooks to compare provider performance.
Which payment methods and countries does Onramper support?
Onramper says its network covers 175+ payment methods, including cards, bank transfers and local options, and 190+ countries. The homepage also gives a 130-method figure in one section. Confirm current coverage for your markets and payment flows.
Does Onramper add fees to transactions?
Onramper says it generally does not add a fee on top of the rate offered by each onramp and typically earns referral fees. Provider prices and fees can still affect what users pay; compare live quotes and confirm commercial terms with Onramper.
