Why Tambua. Sinch Verification supports SMS, flash call and voice methods and native mobile SDKs. Tambua uses SMS, WhatsApp, voice, email and M-PESA, and adds an ordered fallback journey per app.
Why teams choose Tambua over Sinch Verification
- You need WhatsApp, email or M-PESA verification
- You want public per-country rates
- You want a web-first, key-based API with a free test mode
Pricing: Tambua vs Sinch Verification
| Topic | Tambua | Sinch Verification |
|---|---|---|
| How you are charged | KES 0.50 per SMS OTP in Kenya, with no separate verification fee | Per-message pricing by destination and verification method. |
| Failed attempts | Free | See Sinch Verification's pricing page |
| Sender ID and numbers | Shared Tambua sender included, nothing to buy | See Sinch Verification's pricing page |
| Fallback to another channel | A setting, not an add-on fee | See Sinch Verification's pricing page |
See Tambua's full per-country rates, or check Sinch Verification's own pricing for your destination before you compare.
Tambua at a glance
| Topic | Tambua |
|---|---|
| Focus | OTP generation, delivery and verification API for Africa |
| Channels | SMS, WhatsApp, voice, email, M-PESA, Reverse OTP (Telegram, USSD and shortcode are coming soon) |
| Sender ID and numbers | Shared Tambua sender ID and numbers included. Nothing to buy, lease or register |
| Channel fallback | Ordered journey of up to three channels per app, on failure or after a timer; one code across attempts |
| Failed attempts | Not billed; only carrier-accepted attempts are charged |
| Pricing | Public per-country rates on the pricing page |
| Free testing | Test keys return the code in the API response, no messages sent |
| Webhooks | Signed webhooks for sent, delivered, verified and fallback events |
What Sinch Verification publishes
| Topic | Sinch Verification |
|---|---|
| Verification methods | SMS, flash call, phone call and data verification source |
| Mobile SDKs | Native mobile SDKs are offered source |
Frequently asked questions
Why choose Tambua over Sinch Verification for OTP?
You need WhatsApp, email or M-PESA verification. You want public per-country rates. You want a web-first, key-based API with a free test mode. Tambua is built only for sending and verifying one-time codes across Africa, so you integrate in two calls and start free with test keys.
How do I switch from Sinch Verification to Tambua?
Create a free test key, call send to deliver a code and verify to check it. Most teams replace their existing send and check logic in an afternoon, then swap to a live key.