Tutorials
Learn by doing
Each tutorial runs entirely in your browser. Your data never leaves your machine. Import a CSV, tweak the parameters, understand the results.
Capability + SPC Chart
Import your measurements, get Cp, Cpk, Pp, Ppk, histogram with normal curve, Xbar control chart and Western Electric violation detection.
Open the tutorial →Neural Network
Tune the architecture (layers, neurons, activation), import your CSV data, visualise forward/backward/update step by step. Automatic sizing recommendation.
Open the tutorial →Hypothesis Tests
Import your data, the tutorial recommends the right test (t-test, ANOVA, chi², Mann-Whitney, Kruskal-Wallis). Automatic calculation, visualisation of distributions and rejection zones, English interpretation.
Open the tutorial →Design of Experiments (DOE)
Define your factors and levels, choose a strategy (full factorial, fractional, Box-Behnken, CCD). Run matrix generated, effects and interactions computed, interaction plots.
Open the tutorial →ROI Calculator — Time wasted in Excel
Estimate the real cost of manual tasks (Excel, reports, data entry). Compute the payback and 3-year ROI of an automation. Cumulative cost chart, current vs automated.
Open the tutorial →AI Price Tracker
Evolution of LLM token and GPU hardware prices since 2023. Claude, GPT, Gemini, Mistral comparison. Cloud-vs-on-premise profitability calculator for industrial mid-caps.
Open the tutorial →Mini Factory — Top management
Run your daily AIC / production stand-ups. SQCDP indicators (Safety, Quality, Cost, Delivery, People), corrective actions, 5-min timer, CSV export. 100% browser.
Open the tutorial →Load / Capacity — Shop floor planning
Import your work orders and routings, visualise load per workstation, identify the bottleneck, simulate scenarios. Simplified VSM included. 100% browser.
Open the tutorial →R&R — MSA Analysis
Complete R&R tutorial (MSA 4th ed. AIAG): operators × parts × repetitions. ANOVA Gauge R&R in Python in the browser (Pyodide), variance decomposition, %Study Variation, NDC, measurement system verdict.
Open the tutorial →PCA (Principal Component Analysis)
Import multivariate data, visualise scree plot, PC1/PC2 biplot + correlation circle, loadings table. Industrial dataset provided. Pyodide + scikit-learn compute, 100% browser.
Open the tutorial →Regression — Linear & Polynomial
Import X and Y, fit a degree 1 to 5 model. R², adjusted R², RMSE, MAE, mean and prediction CI bands, residuals, overfit detection. Pyodide + scikit-learn.
Open the tutorial →OEE — Overall Equipment Effectiveness
THE no. 1 KPI in manufacturing. Enter your opening time, stoppages and parts produced: get Availability × Performance × Quality, waterfall of the 6 big losses, Pareto of stoppages and a priority recommendation. Pyodide in the browser.
Open the tutorial →Red/Green — Attribute MSA (Cohen & Fleiss)
Interactive Attribute Agreement Analysis tutorial (AIAG). Operators × parts × repetitions matrix, pairwise Cohen κ, global Fleiss κ, effectiveness vs reference, agreement heatmap, Landis-Koch verdict. For visual and sensory inspections. Pyodide in the browser.
Open the tutorial →Micro-stops — Distribution, Pareto & heatmap
Micro-stops (< 5 min) kill OEE Performance without showing up in logs. Import your events, get: fitted distribution (log-normal, Weibull), double-view Pareto (count AND duration), hour × day heatmap, MTBA, P95, OEE impact estimate. Data-driven maintenance.
Open the tutorial →Advanced SPC — CUSUM, EWMA & extended Western Electric
Shewhart ±3σ is blind to small shifts (< 1σ): CUSUM and EWMA catch them 50+ points earlier. Coupled with the 8 extended Western Electric rules (zones A/B/C, runs, trends, hugging, stratification), this is the full SPC arsenal. Import your series, view the 3 charts simultaneously, automatic detection of the 8 rules. Pyodide + numpy + scipy.
Open the tutorial →Time series & forecasting
Forecast demand, energy consumption or sensor drift. Import your series (date, value): STL decomposition, ADF stationarity test, ACF/PACF, automatic fit (Naïve, MA, Holt-Winters, SARIMA), MAPE / RMSE train vs test, forecast + 95% CI. 100% browser via Pyodide.
Open the tutorial →FMEA — Failure Mode and Effects Analysis
Indispensable risk analysis methodology (ISO 9001, IATF 16949, IEC 60812). Interactive FMEA grid: Severity × Occurrence × Detection rating, RPN = S×O×D, Action Priority VDA/AIAG 2019. Re-rating after actions, RPN Pareto, S×O matrix. Pyodide in the browser.
Open the tutorial →Decision Trees — Classification, regression & interpretability
Interpretable ML model, applicable to Quality / Maintenance / R&D. Fit a tree (sklearn) on a part-defect or tool-life dataset, play with max_depth, min_samples_leaf and the split criterion (Gini/Entropy/MSE). Tree visualisation, 2D decision boundary, learning curve, feature importance MDI vs permutation, extracted rules. Pyodide + scikit-learn.
Open the tutorial →Tax regime — Micro vs Real (FR)
Compare micro-entreprise and simplified real regime: flat-rate allowance (71%/50%/34%), 2026 progressive income tax, real expenses, visualised crossover point and VAT threshold alerts at €85,000 / €37,500.
Open the tutorial →Executive compensation SASU / EURL
Salary vs dividends: SASU social contributions (~82% employee+employer), EURL self-employed (~45%), corporate tax, 30% PFU flat tax, 2026 progressive income tax. 10% capital threshold for EURL. Comparative chart and optimal mix.
Open the tutorial →Holding — Parent-subsidiary regime (FR)
Dividends flowing up to the holding: 95% exempt, 5% added-back share (French CGI art. 145 & 216). Cascade profit → subsidiary corporate tax → holding corporate tax → net cash. Quantified savings vs double taxation.
Open the tutorial →SEO / GEO Audit — Technical checklist
Paste the HTML or provide a URL: automatic audit of title, meta description, canonical, Hn hierarchy, JSON-LD schema.org, Open Graph, image alt, lang, llms.txt, robots.txt. /100 score + prioritised recommendations.
Open the tutorial →Vibration analysis & industrial FFT
Condition-based maintenance: detect unbalance, misalignment, bearings (BPFO/BPFI), belt and cavitation via spectral signature. 6 synthetic-scenario signals + CSV import, FFT with windowing (Hann/Hamming/rect), Hilbert envelope analysis, FFT cascade, RMS/Crest/Kurtosis indicators with ISO 10816/20816 thresholds. Pyodide + numpy + scipy.
Open the tutorial →Need a tailored analysis?