Outliner Pro Key

2.2.5

Alfred Fritz

4.74

126 reviews

5,000+
Downloads

$5.00

Organize lists and memos in a tree-structure with collapsable nodes.

Screenshots by Alfred Fritz, from the Google Play listing

View on Google Play

AppBrain's verdict

EstablishedNicheLoved by users

Rating on Google Play: 4.74; 126 ratings
Installs: 6.6 thousand
Last updated: September 21, 2026
Ads: No ads
Size: 110.5 KB

Outliner Pro Key is a niche app, with 6.6 thousand installs. Users love it: 4.7 stars from 126 ratings.

Official page on Google Play

Pros & Cons

Unlocks PRO features for Android Outliner
Tree-structured organization with collapsible nodes
Supports lists, tasks, memos, and ideas
Transparent one-time price for PRO access

Requires the free Android Outliner to be installed
No explicit requested permissions listed
Only available as a paid key; not a standalone app

User feedback

Ratings and reviews on Google Play

Comments on Outliner Pro Key for Android

★★★★★ Ken Stolp · Dec 16, 2016

Just what I was looking for. Easy to use outliner. Simple, straight forward design. No adds for the free version. I especially like the import, export, and sync to Dropbox features. And technical support was quick and helpful.

★★★★★ A Google User · Jul 16, 2014

Pro features are powerful. This outlining app is perfect for my needs. It allows me to maintain a fairly complex outline on my Android device but then work with the same outline on my Mac using OmniOutliner. Syncing is done using the built-in Dropbox support. Like others have mentioned, the technical support is also excellent. The tutorial file is great, but I had a question about importing OPML files. I emailed the developer and got a response right away with everything I needed to know to make it work.

★★☆☆☆ A Google User · Nov 13, 2014

I bought the Pro version because Tree Pad advertised it as having the ability to sync with it on Android. However, I found out the hard way that it has not kept up with the latest editions of .tpd files and therefore will not sync as claimed. Most disappointed. Tree Pad It's Not

★★☆☆☆ A Google user · Nov 3, 2017

I think you got my money to stop ads, which it did, however it will not back up to SD card. It also does not back up to the device. It does fill my need just has no backup. It states it does, it does create folders with no info

★★☆☆☆ Zen ji · Aug 4, 2019

Setting up Dropbox sync= nightmare. Have to drop file manually, unlike most apps. Still no idea how to sync something to my tablet that only exists on my phone. Unfortunate, since otherwise easy to use. Having OVERWRITE-on-conflict as default is bad idea. Needs DUPLICATE-OUTLINE, since u will probably corrupt my data. Also, I bought on Tablet, and it still wants to charge me for phone.

★★☆☆☆ Francis Tang · Jan 6, 2016

Can write to external SD In order to use external SD in Android 5.1.1, the app must prompt the user for external SD access. How do I get Outliner to initiates the request?

Google Play Rating history and histogram

100

Store listing

By Alfred Fritz, from Google Play

Description by Alfred Fritz Written by the developer, not by AppBrain. Click to read.

This app enables the PRO features in Android Outliner. It only makes sense if you have the latest free version of Android Outliner installed.

With Outliner you organize shopping lists, tasks, todo-lists, ideas and all kinds of memos. Or use it as a project management tool.
Do it in a tree-structure with collapsable nodes.

Recent changes:
* Android API upgrade

Safety and technology

Found in the app by AppBrain

Ads: No ads
Price: $5.00
Libraries: 0
App size: 110.5 KB
Needs Android: 2.1+
Content rating: Everyone

Technologies used by Outliner Pro Key

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Releases

Updates seen on Google Play

Version: 2.2.5
Launched: November 2012

Sep 21, 2026UpdateVersion 2.2.5
Aug 25, 2024UpdateVersion 2.2.4
Aug 29, 2023UpdateVersion 2.2.3
Feb 5, 2023UpdateVersion 2.2.2
Nov 16, 2022Price IncreaseNew price: $5.00 ($5.00)

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Alternatives

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Installs

Tracked by AppBrain

Last 30 days: 19
Play install range: 5+ thousand
Launched: November 2012

Installs over time

Outliner Pro Key has been installed 6.6 thousand times. Over the past 30 days, it has been installed 19 times.

Rankings

Google Play top charts

Google Play Rankings for Outliner Pro Key

This app is not ranked

About the app and developer

About Outliner Pro Key

Outliner Pro Key is a productivity app developed by Alfred Fritz.

Install Statistics

Outliner Pro Key has been installed 6.6 thousand times. In the last 30 days, the app was installed 19 times.

User Ratings

Outliner Pro Key is rated 4.74 out of 5 stars. The rating is based on 130 ratings.

App Information

Outliner Pro Key costs $5.00. The app size is 110.45 kB. The latest version available is 2.2.5. The last update was on September 21, 2026.

Technical Requirements

Outliner Pro Key requires Android 2.1+ or higher. The app has a content rating of Everyone. The app has been available on Google Play since November 2012.

Outliner Pro Key is made and published by Alfred Fritz. AppBrain is an independent app data site and isn't affiliated with Alfred Fritz. The app name, icon, screenshots and description belong to Alfred Fritz and are shown as published on Google Play.

App Performance Report

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Developer information for Alfred Fritz

Alfred Fritz

android.outliner@gmail.com

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