Products

CalliCoder

In-depth programming tutorials for Java, Spring Boot and Golang

callicoder.com Education / Coding Education

AI Benchmark
Desktop
Mobile
Monthly visits
<5K
Oct 2026
MRR
$1,300Claimed
Disclosed 2026-09-29Indie Hackers
Entry price
Free
No monthly subscription pricing
Creators
Rajeev Kumar Singh
@callicoder· 938 followers
Launched
9y ago
2017-06-23 · Est.

Traffic & revenue

Monthly visitsData through Oct 2026
MRRSelf-reported, unverified · Indie Hackers
  • Sep 2026$1,300Self-reported MRR · unverified
Events1 revenue disclosure · 14 changes

Revenue evidence

Publicly disclosed & verified revenue figures, sorted by date

Marketing moves

Launches, search & content, referrals, promotions
X accounts@callicoder

  • New product launchLaunch

    Jun 23, 2017 · 9y agoWebsite

Traffic sources

Oct 2026

Traffic breakdown

Channels

  • Organic Search40%
  • Direct32%
  • Referrals9%
  • Social6%
  • Other13%

Countries

  • United States69%
  • India31%

Search

Domain authority —Domain registered 2017-06-23

KeywordMonthly volume
find minimum in rotated sorted array6,240
squares of a sorted array1,400
stock span problem1,070
floor and ceil in sorted array990
java date object add/subtract date—

Traffic data: Vaneform

Pricing

Website does not list public plan prices.

Trial: None · Observed 2026-11-09 · Source page

Pages & changes

Tracked since 2026-08-10

Key pages

Weekly snapshots
www.callicoder.com/ Snapshot 2026-11-09

Changes

  1. Nov 1 · 14d ago

    Homepage headline (H1) changed to “In-depth programming tutorials for Java, Spring Boot and Golang”Positioning

    Deploying a full-stack Spring boot, Mysql, and React app on Kubernetes with Persistent Volumes and S...→In-depth programming tutorials for Java, Spring Boot and Golang

    At the time: <5K visits/mo13 concurrent moves
  2. Nov 1 · 14d ago

    Adopted technology: AstroFeatures

    —→Astro

    At the time: <5K visits/mo13 concurrent moves
  3. Nov 1 · 14d ago

    Adopted technology: CloudflareFeatures

    —→Cloudflare

    At the time: <5K visits/mo13 concurrent moves
  4. Nov 1 · 14d ago

    Adopted technology: Cloudflare Browser InsightsFeatures

    —→Cloudflare Browser Insights

    At the time: <5K visits/mo13 concurrent moves
  5. Nov 1 · 14d ago

    Removed technology: GatsbyFeatures

    Gatsby→—

    At the time: <5K visits/mo13 concurrent moves
  6. Nov 1 · 14d ago

    Removed technology: Google AnalyticsFeatures

    Google Analytics→—

    At the time: <5K visits/mo13 concurrent moves

Questions & evidence

How much website traffic does CalliCoder get?
Vaneform estimates <5K website visits in 2026-10. Visits can include repeat visits; this estimate measures web traffic separately from paying customers or revenue.Source
What is CalliCoder and what platforms does it support?
CalliCoder is catalogued under Coding Education: In-depth programming tutorials for Java, Spring Boot and Golang. Supported platforms: Web.
What is CalliCoder's publicly disclosed revenue?
Indie Hackers records a founder-reported figure of $1,300 /mo stated on 2026-09-29.Source

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