Products

DataLemur

Established Leader

Ace the SQL & Data Science Interview

datalemur.com HR & Careers / Interview Preparation

AI Benchmark
Desktop
Mobile
Monthly visits
523.3K
Down17.7%MoMSep 2026
MRR
$1,500Claimed
Disclosed 2026-09-29Indie Hackers
Entry price
$15/mo
Higher than 53% of peersNiche median $13.125/mo
Creators
Nick Singh
@nicksinghtech· 32.9K followers
Launched
4y ago
2022-08-24 · Est.

Traffic & revenue

Monthly visitsData through Sep 2026 · Oct 2026 pending
MRRSelf-reported, unverified · Indie Hackers
  • Sep 2026$1,500Self-reported MRR · unverified
Events1 revenue disclosure · 1 change

Revenue evidence

Publicly disclosed & verified revenue figures, sorted by date

Marketing moves

Launches, search & content, referrals, promotions
  • DataLemur launched on Show HN (16 pts · 5 comments)Launch

    DataLemur – Ace the SQL Interview! — I just launched a new free SQL practice platform today called DataLemur! I'm the author of Ace the Data Science Interview, and a lot of ou…

    Aug 24, 2022 · 4y agoSource

Third-party reviews & case dossiers

Acquisition breakdowns, engineer reviews & open-source metrics
Show HN
2022-08-24Source
Post excerpt:
I just launched a new free SQL practice platform today called DataLemur! I'm the author of Ace the Data Science Interview, and a lot of our readers wanted to practice the SQL questions from the book, so we decided to make DataLemur free and open! Even if you aren't job hunting, these tricky SQL questions are pretty fun to practice on.

Traffic sources

Sep 2026

Traffic breakdown

Channels

  • Direct52%
  • Organic Search23%
  • Referrals11%
  • Social8%
  • Other6%

Countries

  • India31%
  • United States26%
  • Nigeria4%
  • United Kingdom3%
  • Indonesia3%

Search

Domain authority —Domain registered 2021-06-10

KeywordMonthly volume
datalemur18.8K
sql cheat sheet14K
data lemur9,690
sql game5,610
data lemur sql1,230

Traffic data: Vaneform

Pricing

1:1 Coaching + Signed Book + Lifetime Access
$300/once
Yearly
$60/yr (billed annually)
Billed annually $180/yr
100+ SQL Interview questions · 70+ Data Science interview questions
Monthly
$15/mo

Trial: None · 3 paid tiers ($15–$300) · Observed 2026-11-03 · Pricing page

Entry price $15/mo, Higher than 53% of peers; “Interview Preparation” median is $13.125/mo.View pricing benchmark

Pages & changes

Tracked since 2026-07-31

Key pages

Weekly snapshots

Official blog & changelog

Recent articles & product updates

Changes

  1. Nov 1 · 13d ago

    Adopted technology: Priority HintsFeatures

    —→Priority Hints

Design

First-screen visual analysis & :root CSS

Minimal Monochrome (Light canvas, dense density) featuring full-bleed canvas / video / 3d layout and pure typography & geometry visuals.

First-screen preview · click to zoom

First-screen pitch & conversion flow

“Ace the SQL & Data Science Interview”

Full-Bleed Canvas / Video / 3D hero structure paired with start free / sign up CTA and no explicit trust bar.

Conversion path: Full-Bleed Canvas / Video / 3D + Pure Typography & Geometry → Start Free / Sign Up

  • Outcome & Speed Promise

Palette · click to copy

5-D design score5.5 / 10
Typography
6.0
Color & Contrast
6.0
Layout & Spacing
6.0
Craft & Polish
5.0
Distinctiveness
4.0

Structure

Fonts
Lato
Primary visual
Pure Typography & Geometry
Conversion CTA
Start Free / Sign Up
Social proof
No Explicit Trust Bar
Navigation
Full-Width Top Bar
Theme & density
Light · Dense
Corners & depth
Small Radius · Hairline borders
Preview full AI design brief (includes :root CSS variables & layout rules)Style tokens only; never copy brand names, logos, copy, or images
# Design Brief: Minimal Monochrome

Monochrome palette with a single accent color, hairline dividers, and generous whitespace.

## Design Tokens

```css
:root {
  --background: #fcfcfc;
  --surface: #ffffff;
  --foreground: #20242c;
  --muted-foreground: #686868;
  --accent: #ef1026;
  --radius: 4px;
  --font-heading: "Lato", ui-sans-serif, system-ui, sans-serif;
  --font-body: "Lato", ui-sans-serif, system-ui, sans-serif;
}
```

Color area ratio: Background #FCFCFC (~43%) · Surface #FFFFFF (~49%) · Text #20242C (~5%) · Muted Text #686868 (~2%) · Accent #EF1026 (~1%). Background and surface dominate the canvas; reserve the accent color for primary buttons and active states.

## Layout & Conversion Structure

- Hero layout: Full-Bleed Canvas / Video / 3D
- Navigation: Full-Width Top Bar
- Theme & density: Light · Dense
- Border radius & elevation: Small Radius; no drop shadows—separate layers with hairline borders and whitespace
- Primary visual medium: Pure Typography & Geometry
- Conversion CTA: Start Free / Sign Up
- Headline hook: Outcome & Speed Promise
- Spatial layout notes: Full-Bleed Canvas / Video / 3D hero structure paired with start free / sign up CTA and no explicit trust bar.
- Visual summary: Minimal Monochrome (Light canvas, dense density) featuring full-bleed canvas / video / 3d layout and pure typography & geometry visuals.

## Avoid

- Multi-stop neon gradients
- Heavy drop shadows
- More than one competing accent color

Implement the UI following the design tokens and layout specifications above: use only these color variables, and reserve the accent color strictly for primary actions and active states. Adopt only this visual style—never copy any reference product’s brand name, logo, copy, or imagery.

Questions & evidence

How much does DataLemur cost?
1:1 Coaching + Signed Book + Lifetime Access: $300/once; Yearly: $60/yr (billed annually) (annual billing available); Monthly: $15/mo. Observed 2026-11-03. Check the source for current billing terms, usage limits and taxes.Source
How much website traffic does DataLemur get?
Vaneform estimates 523.3K website visits in 2026-09. Visits can include repeat visits; this estimate measures web traffic separately from paying customers or revenue.Source
What is DataLemur and what platforms does it support?
DataLemur is catalogued under Interview Preparation: Ace the SQL & Data Science Interview. Supported platforms: Web.
What is DataLemur's publicly disclosed revenue?
Indie Hackers records a founder-reported figure of $1,500 /mo stated on 2026-09-29.Source

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