Comparison

Twice As Hard Trainer vs Privacy Vault

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

Privacy Vault

Securely store and manage your private files with military-grade encryption. Protect photos, videos, documents, and more with advanced security features and multiple unlocking methods. Supports NAS integration for expanded storage.

Highlights
  • Military-grade AES-GCM encryption
  • Face ID/Touch ID unlocking
  • Comprehensive file management
  • Batch operations
  • NAS network storage support
  • Secure file preview
Features
Read full description

## Your Digital Privacy Guardian Privacy Vault is a professional-grade private file management application designed specifically for iOS. It employs military-grade AES-GCM encryption technology to provide bank-level security protection for your sensitive files. ## Core Functions ### Military-Grade File Encryption * AES-GCM Encryption Algorithm: Military-grade encryption standard using a 256-bit key. * PBKDF2-SHA256 Key Derivation: 100,000 iterations to ensure password security. * Random Salt Generation: Generates a 32-byte random salt for each encryption, preventing rainbow table attacks. * Individual File Passwords: Each file can have an independent password for double protection. ### Multiple Unlocking Methods * Face ID / Touch ID: Biometric unlocking. * Numeric Password: Supports strong password strategy verification. * Smart Authentication: Automatically selects the best unlocking method based on device capabilities. ### Comprehensive File Management * Multi-Format Support: Supports all formats including images, videos, documents, and audio. * Folder Management: Create, rename, move, and delete folders. * Batch Operations: Batch encryption, decryption, move, and rename. * Smart Search: Multi-condition search and tag system. ### Convenient Import Function * File Import: Supports importing all file types. * **Photo Import:** Batch import of multiple photos and videos. * **Photo Import:** Directly capture and save photos to the vault. * **Keep Original Names:** Automatically preserves original filenames. ### Secure Preview System * **Encrypted File Preview:** Preview encrypted content by entering a password. * **Multi-Format Support:** Preview images, videos, PDFs, and audio. * **Temporary Decryption:** Automatically cleans up temporary files after previewing. * **QuickLook Integration:** System-level preview experience. ### NAS Network Storage Support * **Multi-Protocol Support:** Supports three mainstream network storage protocols: SMB, FTP, and WebDAV. * **Quick Connection:** One-click connection to home NAS, enterprise file servers, and cloud storage services. * **Secure Transfer:** Supports encrypted connections (SMB encryption, FTP over SSL/TLS, HTTPS). * **File Synchronization:** Supports downloading files from the NAS to the local vault or uploading encrypted files to the NAS. * **Online Browsing:** Directly browse NAS files and preview them without downloading. * **Password Management:** Automatically saves connection passwords to the Keychain for security and convenience. * **Multi-Server Management:** Supports simultaneous connection to multiple NAS devices. Server Switching, Fast ### Personalization * Theme System: Multiple preset themes and custom colors * Interface Enhancement: Modern UI design, smooth animations * Storage Monitoring: Real-time disk space usage * Statistics: File count, encryption status statistics ## Security Features * Local Storage: All data is stored locally, never uploaded to third-party servers * Sandbox Protection: Strictly adheres to iOS sandbox security mechanisms * Memory Protection: Sensitive data is immediately cleared after use * Background Lock: App automatically locks for protection when entering the background ## Applicable Scenarios * Personal Privacy: Protection of private photos, videos, and documents * Business Documents: Encryption of contracts, agreements, and financial statements * Learning Materials: Management of important notes, certificates, and documents * Creative Works: Protection of design drafts, code, and creative documents ## Why Choose Us * Professional-Grade Encryption: Uses bank-grade AES-GCM encryption algorithm * Multiple Protections: Biometric identification, digital passwords * User-Friendly: Modern interface, simple and intuitive operation * Privacy First: Local storage, never uploaded to third-party servers * Continuous updates: Regular updates and continuous optimization of the user experience.

Screenshots

Twice As Hard Trainer4 screens
Privacy Vault4 screens

Verdict

The call

The clearest difference is in-app purchases: Privacy Vault at none against Twice As Hard Trainer's 2. Privacy Vault also leads on review sentiment (33% vs 0%) and update cadence (every 11 days vs every 4 months). Twice As Hard Trainer's advantage is device support (3 vs 1) and iOS requirement (15.6 vs 17.0). On ads 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

Twice As Hard Trainer costs $3.99 and Privacy Vault $2.99 up front. Twice As Hard Trainer sells 2 in-app purchases, starting at $1.99 per 3 months. Privacy Vault asks for nothing beyond the download.

UpkeepUpdate frequency

Twice As Hard Trainer ships an update every 4 months, Privacy Vault every 11 days. The most recent releases landed on October 12, 2026 and October 8, 2026 respectively.

Scorecard7 real differences · 3 level
Twice As Hard Trainer versus Privacy Vault: the parameters behind the verdict, then further details
ParameterTwice As Hard TrainerPrivacy Vault
Price$3.99$2.99 — better
Rating1.0 (1 ratings) — better—
Positive reviews0.0% of reviews33.3% of reviews — better
Number of ratings1 — better—
Update frequencyEvery 4 monthsEvery 11 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationSubscriptionPaid — better
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.6 — better17.0
Further details — not scored
Size7 MB22 MB
Age rating4+4+
DeveloperRalph CosNAICAI LI

Customer experience

Twice As Hard Trainer

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

Privacy Vault

Written reviews3 reviews
Positive33.3%
Neutral66.7%
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

Privacy Vault

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 Privacy Vault free?
Privacy Vault costs $2.99, with no in-app purchases.
Do Twice As Hard Trainer or Privacy Vault have ads?
Neither Twice As Hard Trainer nor Privacy Vault shows ads.
Which is updated more often, Twice As Hard Trainer or Privacy Vault?
Twice As Hard Trainer ships an update every 4 months, and Privacy Vault every 11 days. Most recently, Twice As Hard Trainer was updated on October 12, 2026 and Privacy Vault on October 8, 2026.

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