Side by side
Kelviq vs NDEIGHT
Both stand on merchant of record software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Paid APIWeb
Kelviq combines billing, payments, usage metering, and merchant-of-record tax handling for digital sellers. Review its transaction charges and eligibility limits before adopting it.
Visit Kelviq Paid APIWeb
Choose NDEIGHT if your software business needs Merchant of Record services with checkout, subscriptions, and tax collection. Look elsewhere if creating payment links through API key authentication is essential, or if you need pricing before the onboarding process shares a fee schedule.
Visit NDEIGHTThe facts
| Kelviq | NDEIGHT | |
|---|---|---|
| Free plan | No | Not published |
| Open source | Not published | Not published |
| Runs on | API, Web | API, Web |
| Lowest paid plan | Free or on request | Growth: $49 a month |
| Plans published | 1 | 1 |
| Maker | Not published | Not published |
| Website | kelviq.com | ndeight.com |
| On merchant of record software | #21 of 32 | #22 of 32 |
Kelviq: what it does well
- Supports multiple pricing models, including hybrid pricing
- Real-time usage metering with alerts and limits
- Handles sales tax, VAT, and GST
- Hosted checkout and customer portal
- REST API and typed SDKs
What to know first
- No free plan
- Original transaction fee is retained on refunds
- Charge disputes incur a $15 fee
- Does not support physical goods or marketplaces
NDEIGHT: what it does well
- Supports card, local rail, payment link, and subscription payments.
- Hosted checkout, refunds, payment reads, and webhooks are documented in the API.
- Subscriptions include plans, trials, and renewals.
- Full and partial refunds retain the original sale and audit trail.
- Webhook events support HMAC-SHA256 verification.
What to know first
- Payment links must be created in the dashboard, not through API key authentication.
- NDEIGHT onboards a limited number of merchants.
- Pricing depends on payment mix, volume, and collection method.
Alternatives to Kelviq Alternatives to NDEIGHT The whole list