New tools and improvements, newest first. The version number in the footer of every page shows which version you are using.
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When a new tool or improvement comes from your suggestion, it will be listed here. Is there something you'd use every week? Tell us.
Version 1.0.1 · November 2026
- Plate layout: start from any well
Choose the well that auto-fill starts from, instead of always A1. Wells before it are left as they are, so you can finish a part-used plate or lay out two assays on one plate. The start well is outlined on the plate. Plate layout designer.
Version 1.0 · November 2026
The first full release of WellSpotted: free lab calculators that work on your phone at the bench, show their working and keep your data on your device.
- Prepare solutions
Molarity, C1V1 dilution with intermediate dilutions planned when a volume is too small to pipette, serial dilution and concentration unit conversion. - Set up experiments
PCR and qPCR master mixes, RPM to RCF, cell seeding by cells per well or per cm², and a plate layout designer for 6 to 384-well plates. - Analyse results
DNA and RNA concentration with purity ratios, standard curve fitting (4PL, 5PL and seven other models) with back-calculated samples, and an IC50 and EC50 calculator with confidence intervals, pIC50 and absolute IC50. - Curve fitting your way
Fix the top or bottom of a 4PL or 5PL curve, compare several curves on one chart or separate charts, add chart titles and axis labels, and import readings straight from your plate layout. - Checked before every release
Every calculator is tested against independently worked-out answers, and curve fits and IC50s against SciPy. How we check. - Works offline, easy to share
Install WellSpotted on your phone and it works without a connection. Share any tool with a colleague using the Share this tool button, and suggest a tool or report a problem from any page with the feedback form.