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A teacher-built feedback workflow that turned repetitive online lesson reports into a lean subscription business.
$10–$15 monthly plan · two founders
Fewer bars = easier, cheaper, or faster for an AI-assisted solo builder. Editorial judgments based on the case details.
FeedbackPanda began as an internal fix for an online English teacher’s repetitive after-class reporting. Danielle was teaching roughly 24 students a day and spending unpaid time writing nearly identical lesson feedback. Arvid built a templating and student-history tool, then made it usable by other teachers at Chinese online English schools. The founders reached $50,000 in monthly recurring revenue with two people and did not hire employees. They sold subscriptions, adding an annual plan after finding recurring card charges difficult for some US customers of their German company. A year in, they raised the monthly price from $10 to $15 and added a referral reward. Facebook groups and Instagram supplied organic discovery; a comment describing Danielle’s own tool triggered sharing. At maturity, the business had a few thousand customers, a highly automated support operation, and expenses reported at 5–15% of revenue before founder compensation. The sale price was not given. The founders described receiving acquisition interest after publishing Stripe-confirmed revenue on Indie Hackers.
The quick-reference card — acquisition channels, replication playbook, and risk map — is members-only.
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Two production-grade prompts per idea — a full build spec and an SEO growth plan — plus 10 tailored build specs a week. Members only.
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Source links and the full captured transcripts — the raw material behind every number — are members-only.
Join the Unicorn Club — $5/moCancel anytime, in one clickData credibility: The founders reported $50,000 in monthly recurring revenue in an interview. They said Stripe revenue was publicly confirmed on Indie Hackers, but this episode itself does not provide an independently inspected dashboard. Treat the MRR, customer count, expense ratio, and growth narrative as founder-reported, not audited. The sale price was not disclosed.
9 more sections — how the first customers came, how the first dollar landed, what turned the flywheel, and how they got through the silent stretch. Members read all of it.
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