On the radar
Spark Playground logo

Spark Playground

Revenue verified · Stripe
On the radar
Education

Learn Spark with hands-on tutorials and real interview questions. Practice writing PySpark code, solve data engineeri…

by @rizal_rovins sparkplayground.com Synced just now
0 waiting for this round
MRR · Stripe
$2,418
Growth · 6 mo
+-83%
Active customers
274
SaaS age
11 mo

MRR — last 12 months

Computed from raw Stripe subscriptions, refreshed hourly.

+-83% · 6 mo
$1k$1.8k$2.5kSepNovJanMarMayJul

No round terms yet — on purpose

Rounds only open in regions where we can execute them (EU and UK today). Spark Playground's revenue is verified and updating, but until its region goes live we don't show terms we can't stand behind — and we don't take pledges whose conditions we don't control. Follow it instead, and you'll be first in line.

About Spark Playground

Learn Spark with hands-on tutorials and real interview questions. Practice writing PySpark code, solve data engineering problems, and prepare for your next job interview.

r

Backrail

Back indie founders on verified revenue. Angel-invest in profitable micro-SaaS from $100 — with metrics verified straight from Stripe.

@backrailhq

Backrail is not a bank, broker-dealer, investment adviser or crowdfunding service provider. Pledges made on Backrail are non-binding expressions of interest, not offers or commitments to purchase securities. No funds are collected, held or transferred on this platform. When investment rounds execute, they will do so through a licensed crowdfunding service provider under applicable regulation (ECSPR in the EU). Investing in early-stage companies involves significant risk, including illiquidity, lack of dividends and total loss of capital. Past revenue is not indicative of future performance. Revenue figures shown are computed from data provided by founders' Stripe accounts and refreshed periodically; Backrail does not guarantee their accuracy.

© 2026 Backrail · backrail.io — Made for the indie web.

Built by

@seergiue