TN3270

TN3270

gives easy access to a server

3 ratings
12 reviews
$29.99

Details

  • Released
  • Updated
  • February 1, 2019
  • November 25, 2025

Features

TN3270 screenshot #1 for iPhone
TN3270 screenshot #2 for iPhone
TN3270 screenshot #3 for iPhone
TN3270 screenshot #4 for iPhone
TN3270 screenshot #5 for iPhone
iphone
ipad
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About

This application emulates an IBM 3278 terminal, providing straightforward access to IBM Mainframe systems. It offers standard emulation features, secure connections, and customizable display options for efficient mainframe interaction.

3270 emulation
SSL/TLS security
Customizable screen sizes
Barcode scanner via camera
Support for EBCDIC code pages
Hotspot functionality
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What's New in TN3270

4.4

November 25, 2025

Using a new background task function. Will keep a session alive when TN3270 is running in the background.

User reviews

Still the best out there after 8 years

I haven’t seen any of the bugs talked about in the poor reviews. It works well for the limiting situation of the iPad. It works well with a BT keyboard, and remember that the iOS interface for BT keyboards is problematic.

If you need basic 3270 support, especially if you’re doing a lot of ISPF editing, this is your app.
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Missed it by THAT much and NO support

This handles the basics of logging in and accessing a mainframe, but has several flaws, some critical:

- If SET FULLREAD ON is set in XEDIT to read all NULL characters on the screen (allowing typing after the end of a line with the characters jumping left), the emulator fails to work, with symptom being nothing useful happens after the user presses ENTER or of PF key.
- App has a configuration setting for LU name, but doesn't send it to the host.
- App has a configuration setting for what keys to show in the banner, but doesn't honor it.
- App doesn't control keys to emulate PA1/PA2, critical keys on VM.
- App doesn't honor turning off "Show banner on top of 3270 screen" configuration option.
- Lower banner covers parts of bottom two lines, the input area for the VM/CMS command line on older iPads.

Update: The author declines to examine any of these issues, claiming it must be my unique (actually stock VM) environment and "other users have zero problems" and to "make changes to the 3270 engine could give problems to other users".
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iphone 6 plus

o aplicativo não está rodando bem no iphone 6, nem no iphone 6 plus. pedimos ajuste. Não acessamos mais os sistemas. pedimos providências urgentes !!!

Systems Programmer

This app is not as good as it once was. An orange rectangle jumps around the screen as you touch it. You can zoom in, but not pan around. Very irritating.

Still not working for IBM XEDIT

Tested updated version under IBM VM/CMS. Still does not work for IBM XEDIT.

Developer apps

FAQ

What is TN3270 used for?

TN3270 emulates an IBM 3278 terminal, allowing users to easily access and interact with IBM Mainframe systems directly from their iPhone or iPad.

Does TN3270 support secure connections?

Yes, TN3270 supports SSL/TLS (Secure Socket Layer) connections, ensuring secure communication when accessing your IBM Mainframe.

Can TN3270 scan barcodes?

Yes, TN3270 can utilize your device's camera to function as a barcode scanner, which can be useful for data entry on the mainframe.

What screen sizes does TN3270 support?

TN3270 supports alternate screen sizes, specifically 24x80 and 32x80, allowing for flexibility in how you view mainframe data.

How much does TN3270 cost?

TN3270 is a paid application, priced at $29.99. It is recommended to try the free Lite version before purchasing.

Is TN3270 available on Android?

Based on the provided data, TN3270 is supported on iPhone, iPad, and iPod, suggesting it is an iOS-exclusive application.

How often is TN3270 updated?

The latest version of TN3270 is 4.4, and it was last updated on November 25, 2025. This indicates a recent update, suggesting ongoing support.

What is the user feedback on TN3270?

TN3270 has a rating of 2.3 stars from 3 ratings. This suggests that while some users find it functional, there may be areas for improvement based on overall sentiment.