Backstrip
Backstripping made easy
Free
Backstrip makes it easy to calculate the accommodation needed to generate a stratigraphic section. Data is easily entered in a table, and performing the calculations is just a click of a button. You get a nice plot of accommodation through time, complete with an uncertainty envelope. Save your plot as a pdf and save your results as a text file — you get everything you need. Read more about Backstrip and how to use it.
Analytic Rarefaction
Quick individual-based rarefaction
Free
Analytic Rarefaction allows you to estimate diversity in a sample smaller that what you obtained. Easily import files of species abundance. Analytic Rarefaction produces a file of estimated diversities that you can plot in most plotting apps, including R. Read more about Analytic Rarefaction and how to use it.
Taxon
Fast entry and analysis of ecological data
$4.99
Taxon is the easiest and fastest way to collect ecological data, perform basic analyses, and export it for heavy-duty data analysis. Enter your species tallies as lists, just as you do in the field, with autocompletion speeding your data entry. Add notes, geographic coordinates, and date and time to your censuses. Taxon automatically calculates many common diversity metrics for individual censuses and across your entire project.
Margin of Error
Error bars for percentages
Free
Margin of Error produces confidence intervals for percentages. You supply the observed percentage, the sample size, and the confidence level, and Margin of Error will you give you the upper and lower confidence limit. Use this whenever you want to convey the uncertainty in any estimate of percentage. Calculating error bars on percentages has never been simpler! Read more about Margin of Error and how to use it.