# DataAnalysis > iPad app for plotting, fitting, and analyzing x,y data with various mathematical models. (iPhone/iPad app by Data Evaluation Systems.) - Source: https://appshunter.io/ios/app/dataanalysis/id375603883 (this page in markdown: same URL + `.md`) - Developer: [Data Evaluation Systems](https://appshunter.io/developer/375603886) - Category: Productivity, Education - Price: Free - Rating: 4.10/5 from 106 App Store ratings · 67 written reviews indexed - Age rating: 4+ - Requires: iOS 14.0 · 26 MB - Languages: American English - Released: 2010-06-20 - Data updated: 2026-08-06 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/dataanalysis/id375603883/reviews.md ## What is DataAnalysis? DataAnalysis is a general purpose iPad App for the plotting and fitting of all types of data that can be formulated as x, y pairs. The program can be easily used by both students and professionals. It is particularly useful for quick analyses of various types of data by curve fitting, value prediction via a standard curve, and analysis of kinetic data including enzyme kinetics. Data can be entered directly via the keyboard or imported from a text file (.txt), or a comma separated value file (.csv). In addition, data can be pasted from the clipboard. After data entry the user has the option to average, baseline correct, and/or normalize the data before plotting and fitting. Plotting of the data is as simple as pressing the Plot button. The axes are autoscaled and the graph is immediately ready to add to a document or presentation. The user has a variety of options to customize the graph by altering the axes, axes labels, graph title, and changing the symbol, its size and color. Using touch and drag the user can create a selection box allowing the creation of a data subset. Once the data subset has been selected the user has two options: (1) To zoom in on the selected data. Any fitting done in this mode is global (e.g. uses all the data). (2) To zoom and perform a fitting only on the selected subset of the data. The data can be fit to a variety of mathematical equations by non-linear regression including simple functions such as linear, 2nd and 3th order polynomials, power, exponential, and log functions. Data can also be fit to more complex equations for such processes as radioactive decay, enzyme kinetics, 1st and 2nd order chemical reactions, as well as gaussian, logistics and surge functions. The fit can be overlaid on the data with different line widths, types and thicknesses. Lowess Regression (LOcal Weighted regrESSion) can also be used to fit data without the need to specify a mathematical function. Not only does Lowess Regression not require a mathematical function, but also does not require parameters (non-parametric). This fitting method is used extensively to fit everything from election polling to astrophysics data, where the data have a large degree of scatter. For many analytical situations, the data fit can be used as a standard curve to determine the value of unknowns. This analytical procedure is completely automated within DataAnalysis. The program output, graphics and text, can be copied, emailed, or uploaded to cloud storage such as iCloud, Dropbox, Box and OneDrive in a variety of formats including PDF, PNG, CSV and TXT. The graphics in PDF format can be edited with programs like Adobe Illustrator™ and AutoDesk Graphic™ as objects. DataAnalysis also supports multitasking and printing of input data as well as all forms of output. DataAnalysis has built in tool tips, a comprehensive web based User Guide and videos tutorials all available via the Help Menu. ## Key features - Plotting and fitting of x,y data - Data import (txt, csv, clipboard) - Data preprocessing (average, normalize) - Customizable graph generation - Non-linear regression fitting - Standard curve generation - Export graphics and text (PDF, PNG, CSV, TXT) ## Recent user reviews (10 of 67) All indexed reviews: https://appshunter.io/ios/app/dataanalysis/id375603883/reviews.md ### 1/5 — Waste *2022-03-29, version 4.11* I was happy to finally find an app to conduct data analysis . Unfortunately the app will not let me import .csv files only the app specified format . Very disappointing ### 1/5 — It doesn’t do what it says *2021-06-08, version 4.11* There is no option to import a csv file or to paste dada from the clipboard. ### 2/5 — Support page not working *2021-01-30, version 4.0* I believe app has potential. No font colour format option. Both the font and the background colour is white. Unable to make out what’s the value being input. Please at least make it usable. ### 2/5 — to operate something on the data points *2020-09-12, version 3.5.2* For example, x and y are set of data points, but 1/x^2 and y have linear relation. App should be have option to generate 1/x^2 if x set is given. I hope you will do it. I can code for you if you want my help in that. ### 1/5 — Paste from clipboard??? *2019-10-08, version 3.4.5* Seriously need to add an import function inside the app for CSV files at the very least. Forcing folks to use Dropbox or the mail app to take advantage of that functionality is ridiculous and takes away from what you can really do with the app.... ### 2/5 — iPad上、縦表示しかできない。。。 *2019-01-14, version 3.4.5* 現代のAppは横も縦もスクリーンマネージはできるはずですが残念ながら今回は縦のみとなっているようです。でどころいらいらさせされ、削除してしまいました。短期ですみません。 ### 5/5 — Nice but an important feature missing *2018-03-17, version 3.4.5* I‘d like to have multiple y-axes. ### 5/5 — Works as Described *2018-02-20, version 3.4.5* The input and output are not very fancy but if you need a simple x-y plot, this is it. It produces a nice graph and will fit a polynomial line (via regression) of your choice together with relevant statistics. My first use was to plot some blood sugar readings that I take daily. It did an excellent job. Update: I am giving it another star. ### 4/5 — Almost perfect *2017-07-23, version 3.4.3* Five stars if possible to use landscape mode and if it's possible to analyse and modelize several curves on the same graph ! Thanks ! ### 4/5 — Really helpful! *2017-03-09, version 3.4.2* This app is incredibly accurate with its results, clearly plots the points and shows the y-intercept, as well as the gradient. Overall, the app is really useful for plotting points and creating graphs! Would definitely recommend. ## Frequently asked questions about DataAnalysis ### What kind of data can this app analyze? This app is designed for plotting and fitting all types of data that can be formulated as x, y pairs. This includes general scientific data, kinetic data, and enzyme kinetics. It can handle data entered directly, imported from text or CSV files, or pasted from the clipboard. ### What are the key features for data analysis? Key features include data preprocessing such as averaging, baseline correction, and normalization. Users can then plot the data with autoscaled axes and customize graph elements like titles and labels. The app offers various fitting methods, including non-linear regression to mathematical equations and non-parametric Lowess Regression. ### How can I get my data into the app? Data can be entered directly via the keyboard. Alternatively, you can import data from a text file (.txt) or a comma-separated value file (.csv). Data can also be conveniently pasted from your clipboard. ### What are the output and export options? The app allows you to export both graphics and text in various formats, including PDF, PNG, CSV, and TXT. These outputs can be copied, emailed, or uploaded to cloud storage services like iCloud, Dropbox, Box, and OneDrive. PDF graphics can be further edited in programs like Adobe Illustrator. ### Is this app compatible with other devices? This application is specifically designed as a general purpose iPad App. While it supports multitasking and printing on iPad, its primary functionality and interface are optimized for the iPad platform. ## Version history (last 5 releases) ### 4.11 — 2021-03-31 Fixed bug related to migration to Version 4 data file format from all previous versions. ### 4.1 — 2021-03-23 Fixed issue related to using European number formatting as well as a number of minor bug fixes. ### 4.0 — 2021-01-14 Version 4.0 of the DataAnalysis is a major update of the App incorporating may of the latest iPad OS features. DataAnalysis now uses the iPad OS Document Browser as the major interface for the user to interaction with existing data files in native, CSV or TXT format. The Document Browser provides options to share, duplicate, rename, move, delete, create subfolders and create new documents. Furthermore, the user can access files stored on iCloud or other cloud storage locations such as Dropbox, Box and OneDrive. DataAnalysis now can perform error analysis in a number of ways. For example, if you have a series of X,Y pairs, in which groups have the same X value, then the DataAnalysis can average each group and calculate standard deviations. These standard deviations can be used to draw error bars on the graph. Other modes to add error bars are also available. The standard curve analysis has been rewritten to simplify use. Output of data in a variety of formats is now much easier by incorporating the iPadOS Share Sheet. You can use the Share Sheet to share, save or print the raw data in CSV or TXT files. The Share Sheet can also be used for sharing, saving or printing the graph, data analysis, or standard curve analysis. Other options are also available from the Share Sheet depending upon what other Apps are installed on the iPad. For example, if the Apps for cloud storage providers such as Box, Dropbox, OneDrive, etc are installed, the Share Sheet can be used to save the raw data, graphs and results to these locations. Data entry into the spreadsheet can now be done using the Apple Pencil. New Getting Started and Error Analysis tutorials also have been added. ### 3.5.2 — 2020-04-12 Version 3.5.2 of the DataAnalysis App has a number of important improvements and bug fixes. This version has been compiled with the latest development software (Version 13.3). The DataAnalysis App will now work correctly on all sizes of iPads from the Mini to the Pro 11 and 12.9 sizes. DataAnalysis native format data files are now compatible with the new iPhone version (DataAnalysisLite). ### 3.4.5 — 2018-02-20 Version 3.4.5 of the DataAnalysis App has a number of important bug fixes. 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User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-06.*