CallSpark
callspark.app
Pay-as-you-go international calling from the browser, with no app or subscription.
Solo dev behind CallSpark, browser-based international calling
Ahmed Ali is a solo developer who built CallSpark, a service for making cheap international calls to mobile and landline numbers straight from the browser, with no app or subscription and pay-as-you-go rates.
He says on X that CallSpark has passed $3,056 in revenue, and that he is also shipping three iOS apps.
callspark.app
Pay-as-you-go international calling from the browser, with no app or subscription.
CallSpark is Ahmed Ali's web app for making international calls from a browser on pay-as-you-go pricing.
Ahmed Ali reports on X that CallSpark has crossed $3,056 in total revenue.
@johnrush Türkiye118K followers
Running a bootstrapped empire of 24+ SaaS products and directories
Unicorn Platform, SEObot, ListingBott +20$3M/yr
@marclou Indonesia414K followers
French solopreneur from Bali behind TrustMRR, DataFast, ShipFast and 30+ startups
TrustMRR, DataFast, CodeFast +7$98K/mo
@levelsio Portugal979K followers
Solo maker behind Photo AI, Nomads.com, Remote OK, Interior AI and the MAKE book
Photo AI, Vibe Jam, Interior AI +5~$219K/mo across products
@tibo_maker France215K followers
Built and sold Tweet Hunter and Taplio; now runs a $1M/month AI portfolio led by Revid
Revid, Outrank, SuperX +6~$1M/mo across products
@tdinh_me205K followers
Vietnamese indie hacker behind TypingMind, DevUtils, and exits Black Magic and Xnapper
TypingMind, DevUtils, Black Magic +3$142K/mo
@jackfriks Canada181K followers
Self-taught Canadian solo builder of Post Bridge and a string of consumer apps
Post Bridge, Lovelee, Curiosity Quench +4$48.9K MRR