Comparison

Twice As Hard Trainer vs MemDeck

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Twice As Hard Trainer

This app provides technical learning tools for close-up magicians, focusing on specific card magic plots and concepts. It offers interactive analysis and a streamlined interface for practicing complex routines.

Highlights
  • Virtual spectator concept
  • Simon Aronson's 'Twice as Hard' Plot
  • Jean-Marie Beckers's 'Inverse Influence'
  • Display and whisper modes
  • Quick-touch interactive analyser
  • Decadic and tridecadic layouts
Features
Read full description

Twice As Hard Trainer forms part of a comprehensive suite of apps that dedicate to technical learning tools for close-up magicians. Twice as Hard Trainer addresses those who are familiar with the concepts related to Aronson, Tamariz, Nikolas in general, and the Twice as Hard plot in specific. If you know what these names relate to, and you apply the according techniques, then this app will help you stay tuned and inspired. 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

About

MemDeck

Practice card memorization with this app that shuffles decks and tests your recall. Track your progress and compete globally. Adjust deck size for all skill levels.

Highlights
  • Card shuffling and display
  • Memorization timing
  • Automatic answer checking
  • Results recording
  • Adjustable deck size
  • Global leaderboards
Features
Read full description

This app helps you practice card memorization. MemDeck shuffles a deck of cards and shows you the order. You see the cards to memorize the order. The app records how long do you take to memorize the cards and automatically checks your answer. The results are recorded and you can check them later. MemDeck helps not only pro memory athletes but also beginners! You can reduce the number of cards and practice with a smaller size of the deck. Sign in to Apple's GameCenter to see the world ranking of 13, 26, 39, and 52 cards.

Screenshots

Twice As Hard Trainer4 screens
MemDeck4 screens

Verdict

The call

The clearest difference is review sentiment: MemDeck at 100% against Twice As Hard Trainer's 0%. MemDeck also leads on price (Free vs $3.99) and rating (4.8 vs 1.0). Twice As Hard Trainer's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

MemDeck is free to download; Twice As Hard Trainer costs $3.99 up front. MemDeck sells 1 one-off in-app purchase. Twice As Hard Trainer asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

MemDeck holds the better App Store score, 4.8 against 1.0. Both are backed by a comparable volume of ratings — 1 and 4 respectively. Written reviews point the same way: 0% of Twice As Hard Trainer's written reviews are positive against 100% of MemDeck's.

UpkeepUpdate frequency

Twice As Hard Trainer ships an update every 4 months, MemDeck every 6 weeks. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

Scorecard8 real differences · 2 level
Twice As Hard Trainer versus MemDeck: the parameters behind the verdict, then further details
ParameterTwice As Hard TrainerMemDeck
Price$3.99Free — better
Rating1.0 (1 ratings)4.8 (4 ratings) — better
Positive reviews0.0% of reviews100.0% of reviews — better
Number of ratings14 — better
Update frequencyEvery 4 monthsEvery 6 weeks — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationSubscriptionFree with in-app purchases — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.615.6
Further details — not scored
Size7 MB4 MB
Age rating4+4+
DeveloperRalph CosWataru Mera

Customer experience

Twice As Hard Trainer

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

MemDeck

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Twice As Hard Trainer

No in-app purchases

1 purchases

MemDeck

One-time1
  • Premium$4.99

Questions

Is Twice As Hard Trainer free?
Twice As Hard Trainer costs $3.99, with no in-app purchases.
Is MemDeck free?
MemDeck is free to download, with in-app purchases available.
Which has better reviews, Twice As Hard Trainer or MemDeck?
MemDeck is rated higher. Twice As Hard Trainer averages 1.0 out of 5 from 1 ratings, while MemDeck averages 4.8 from 4 ratings.
Do Twice As Hard Trainer or MemDeck have ads?
MemDeck shows ads; Twice As Hard Trainer does not.
Which is updated more often, Twice As Hard Trainer or MemDeck?
Twice As Hard Trainer ships an update every 4 months, and MemDeck every 6 weeks. Most recently, Twice As Hard Trainer was updated on November 1, 2026 and MemDeck on November 3, 2026.

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