Twice As Hard Trainer
Twice As Hard Trainer is made and published by Ralph Cos. AppBrain is an independent app data site and isn't affiliated with Ralph Cos. The app name, icon, screenshots and description belong to Ralph Cos and are shown as published on the App Store.
AppBrain's verdict
Established- Rating on App Store
- 1.00
- 1 ratings
- Last updated
- August 25, 2026
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Releases
Updates seen on the App Store- Version
- 2026.2
- Launched
- November 2012
No changelog data
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Technology
Found in the app by AppBrain- Price
- $3.99
- App size
- 6.60 MB
- Content rating
- Everyone
Technologies used by Twice As Hard Trainer
About the app and developer
About Twice As Hard Trainer
Twice As Hard Trainer is an utilities app developed by Ralph Cos.
User Ratings
Twice As Hard Trainer is rated 1.00 out of 5 stars. The rating is based on one rating ratings.
App Information
Twice As Hard Trainer costs $3.99. The app size is 6.60 MB. The latest version available is 2026.2. The last update was on August 25, 2026.
Technical Requirements
The app has a content rating of Everyone. The app has been available on the App Store since November 2012.
Developer information for Ralph Cos
Address:
Store listing
By Ralph Cos, from the App Store
Description by Ralph Cos Written by the developer, not by AppBrain. Click to read.
A radical slim design.
Cycle through the logical phases of the challenges at hand. Name it the 'virtual spectator' concept.
Approaches:
- Simon Aronson's 'Twice as Hard' Plot and his 'Undo Influence' concept
- Jean-Marie Beckers's 'Inverse Influence'
Credits:
- credits to Simon Aronson for both 'Twice as Hard' and 'Undo Influence'. For details refer to: Simon Aronson, Try the Impossible, Simon Aronson Productions 2001. For details about 'Undo Influence' refer to: Simon Aronson, Try the Impossible, Simon Aronson Productions 2001.
- credits to Jean-Marie Beckers for the 'Inverse Influence' concept, based on his version 'draH sa eciwT'. For details about 'draH sa eciwT', and the inverse version refer to Jean-Marie Beckers, Undo Influence Generalization, 2015.
- I like to thank Simon Aronson and Jean-Marie Beckers for the permission to use their ideas for this commercial app.
Some Features:
- Aronson, Tamariz and three user defined ones
- display and whisper modes
- includes the quick-touch interactive analyser visualising the solution path and allowing for self imposed problem statements. Decadic and tridecadic layouts
- feedback driven development
- feels almost like a true deck of cards. Practicing card magic you don't want no complicated, overloaded and distracting user interface. Less is more.
- probably the most complete, and straightforward solution available.
A card, a number, think, act, check, and again.
Swipe, swipe, think, verify. Swipe Twice, and again.
To experience the look and feel of 'Twice As Hard Trainer' load the free 'Random Input' app available by this developer.
- License agreement - https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
- Privacy policy - https://yeahgic.com/pge_PrivacyTwice.htm