SaaSwhat they say

CallSpark

Make affordable international calls right from your browser. Best alternative to skype and google voice.

Website ↗ TrustMRR ↗

what mrrlens sees

Revenue · 30 d · Verified 30-day revenue$120

Opportunity—

Buyer threads · 30 d0

No complaints read yet.

The reviews crawler visits every product weekly.

01Revenue

$120

Verified revenue · last 30 daysThe last 30 days of revenue, read at the payment provider by TrustMRR. No subscriptions, so it is revenue, not MRR.

Revenue published by the founder on TrustMRR, which reads it from the payment provider; MRRLens shows TrustMRR's figure and links to it. Updated 6 h ago. Listed since 2025.

02Why users leave CallSpark

No public reviews of CallSpark found yet on Trustpilot or Capterra; both are checked weekly. Threads about it still appear below.

03How to build a better CallSpark

The blueprint is written from the complaint clusters, so it appears once negative reviews have been read.

04Who wants a better CallSpark

0 buyer threads in the last 30 days name CallSpark.

05Questions about CallSpark

How much revenue does CallSpark make?

CallSpark's founder publishes its revenue through a payment-provider API on TrustMRR: $120 in the last 30 days. It has no subscriptions, so this is revenue, not MRR.

What are the best CallSpark alternatives?

The closest alternative MRRLens found is BoraPhone. Why users leave is on the CallSpark alternatives page.

See the full x-ray of CallSpark

Full 1-star breakdown with verbatim quotes, the build blueprint and every live thread — on every product.