Comparison

Twice As Hard Trainer vs SubVox

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
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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

SubVox

This tool allows for hands-free content extraction and action triggering using voice commands. It processes audio locally by default, with optional cloud AI integration. Privacy is a core focus, with no storage or collection of user audio or text data.

Highlights
  • Voice-triggered context extraction
  • Custom start and stop phrases
  • On-device speech processing
  • Optional conversational AI
  • Background mode
  • Third-party integrations
  • watchOS companion app
Features
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SubVox is a voice-activated content extraction tool with optional conversational AI features, designed for creators, performers, productivity users, and anyone who needs fast, hands-free action triggers. Speak your start and stop trigger phrases, and SubVox interprets the intent — then sends it to the third-party app or integration you choose. All audio and speech recognition is performed locally on your device by default. You may optionally choose to turn on Cloud Speech AI, which additionally can use AI provider cloud models for speech to text. SubVox does not store, track, or collect audio, transcripts, or extracted text. Features • Voice-triggered context extraction • Custom start and stop phrases • On-device speech processing • Optional conversational AI using user-provided AI provider credentials • Optional background mode when the screen is off • Third-party integrations including MysterSmith, Inject, and more • watchOS companion app • Secure storage of integration and AI credentials in Keychain Privacy First SubVox does not store audio, transcripts, or extracted text. If you choose to enable conversational AI, text is sent directly from your device to the AI provider you select using your own credentials. SubVox does not receive, store, or process this data on its own servers. Your data only leaves your device when you explicitly choose to send it and only to services you authorize. For Entertainment & Personal Utility SubVox is intended for entertainment and personal utility. It is not designed for professional, legal, medical, or safety-critical use.

Screenshots

Twice As Hard Trainer4 screens
SubVox3 screens

Verdict

The call

The clearest difference is review sentiment: SubVox at 100% against Twice As Hard Trainer's 0%. SubVox also leads on price (Free vs $3.99) and rating (5.0 vs 1.0). Twice As Hard Trainer's advantage is iOS requirement (15.6 vs 18.0). On ratings volume, ads and device support 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

SubVox is free to download; Twice As Hard Trainer costs $3.99 up front. Twice As Hard Trainer sells 2 in-app purchases, starting at $1.99 per 3 months. SubVox asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

SubVox holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews point the same way: 0% of Twice As Hard Trainer's written reviews are positive against 100% of SubVox's.

UpkeepUpdate frequency

Twice As Hard Trainer ships an update every 4 months, SubVox fortnightly. The most recent releases landed on October 12, 2026 and October 7, 2026 respectively.

Scorecard7 real differences · 3 level
Twice As Hard Trainer versus SubVox: the parameters behind the verdict, then further details
ParameterTwice As Hard TrainerSubVox
Price$3.99Free — better
Rating1.0 (1 ratings)5.0 (1 ratings) — better
Positive reviews0.0% of reviews100.0% of reviews — better
Number of ratings11
Update frequencyEvery 4 monthsFortnightly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationSubscriptionFree with in-app purchases — better
DevicesiPhone, iPad, iPodiPhone, iPad, Apple Watch
Requires iOS15.6 — better18.0
Further details — not scored
Size7 MB59 MB
Age rating4+4+
DeveloperRalph CosChristopher Canfield

Customer experience

Twice As Hard Trainer

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

SubVox

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

2 purchases

Twice As Hard Trainer

Subscriptions2
  • 3 Months Subscription3 Days trial$1.993 Months
  • Annual Subscription7 Days trial$3.991 Year
None

SubVox

No in-app purchases

Questions

Is Twice As Hard Trainer free?
Twice As Hard Trainer costs $3.99, and also offers in-app purchases.
Is SubVox free?
SubVox is free to download, with no in-app purchases.
Which has better reviews, Twice As Hard Trainer or SubVox?
SubVox is rated higher. Twice As Hard Trainer averages 1.0 out of 5 from 1 ratings, while SubVox averages 5.0 from 1 ratings.
Do Twice As Hard Trainer or SubVox have ads?
Neither Twice As Hard Trainer nor SubVox shows ads.
Which is updated more often, Twice As Hard Trainer or SubVox?
Twice As Hard Trainer ships an update every 4 months, and SubVox fortnightly. Most recently, Twice As Hard Trainer was updated on October 12, 2026 and SubVox on October 7, 2026.

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