What's New

• Thank you for using Epi Info. Please note that the Main Menu Screen features a link to a tutorial on using the app.
• This version sorts the list of stored forms when importing data from a sync file.

App Description

Data Entry

Allows the user to collect data on the mobile device using a form created with Epi Info 7 on a desktop PC. Features include:

• Importing a collection form via the device’s native email app
• Opening saved forms
• Entering new records to be stored on the device
• Recalling and updating or deleting existing records
• Packaging and encrypting local datasets for import to PC Epi Info 7 projects

Data Analysis

Allows the user to read and analyze locally-stored datasets. Features include:

• Storing comma-delimited tables to the local Epi Info SQLite table via email
• Frequency analysis
• 2x2 or MxN tables and associated statistics
• Means and associated statistics
• Deleting local SQLite tables from the device

StatCalc

StatCalc statistical calculators have long been a feature of CDC's Epi Info desktop software. Each calculator has been adapted for iOS and is included in this app. The app controls and facilitates user inputs by taking advantage of the iPad's touchscreen interface and using input devices such as sliders and steppers.

Included calculators are:

• 2x2xn calculator with associated confidence intervals and statistical tests
• Pair-matched case control 2x2 calculator with associated confidence intervals and statistical tests
• Chi-square calculator for trend detection
• Binomial calculator for determining the probability of an observed proportion
• Poisson calculator for determining the probability of an observed number of successes
• Sample size calculators:
• For unmatched case-control studies
• For cohort studies
• For population surveys

VHF Contact Tracing

Allows the user to load a dataset of contacts of Viral Hemorrhagic Fever cases, select records from that dataset, enter follow-up information for a record, transmit the follow-up information to a master database via SMS, and save the follow-up information to the local data table.

Limitation of Liability:
The materials embodied in the Epi Info™ Mobile Application are "as-is" and without warranty of any kind, express, implied or otherwise, including without limitation, any warranty of fitness for a particular purpose. In no event shall the Centers for Disease Control and Prevention (CDC) or the United States (U.S.) Government be liable to the user or to anyone else for any direct, special, incidental, indirect or consequential damages of any kind, or any damages whatsoever, including without limitation, loss of profit, loss of use, savings or revenue, loss of data or the claims of third parties, whether or not CDC or the U.S. Government has been advised of the possibility of such loss, however caused and on any theory of liability, arising out of or in connection with the possession, use or performance of this software.

Privacy Policy:
CDC does not collect any user information, personal or otherwise, when you use this mobile application.

iPhone Screenshots

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Epi Info Companion screenshot 1 Epi Info Companion screenshot 2 Epi Info Companion screenshot 3 Epi Info Companion screenshot 4

iPad Screenshots

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Epi Info Companion screenshot 5 Epi Info Companion screenshot 6 Epi Info Companion screenshot 7 Epi Info Companion screenshot 8

App Changes

  • June 13, 2014 Initial release
  • September 18, 2014 New version 2.0
  • October 03, 2014 New version 2.0.1
  • October 18, 2014 New version 2.0.2
  • March 16, 2016 New version 2.0.3
  • June 15, 2019 New version 5.0
  • July 02, 2019 New version 5.0.1
  • August 16, 2019 New version 5.1
  • August 28, 2019 New version 5.2
  • September 24, 2019 New version 5.2.1
  • October 15, 2019 New version 5.3
  • November 04, 2019 New version 5.4
  • November 18, 2019 New version 5.4.1
  • December 10, 2019 New version 5.4.2
  • January 07, 2020 New version 5.4.3
  • January 28, 2020 New version 5.4.4
  • July 15, 2020 New version 5.5
  • July 16, 2020 New version 5.5.1
  • October 23, 2020 New version 5.5.2
  • August 06, 2021 New version 5.5.5
  • September 16, 2023 New version 5.5.11
  • April 25, 2024 New version 5.5.15