Comparison

Privacy Vault vs Caffeine Rhythm

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

Head to head
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.

About

Caffeine Rhythm

Track your caffeine intake and understand its impact on your body. This app calculates your real-time caffeine levels and predicts when you'll be able to sleep, helping you optimize your daily consumption for better rest.

Highlights
  • Real-time caffeine decay tracking
  • Personalized half-life calculation
  • Sleep safety countdown
  • Coffee shop menu integration
  • Streak tracking and gamification
  • Apple Watch app with complications
  • Home Screen and Lock Screen widgets
  • HealthKit integration
Features
Read full description

Caffeine Rhythm is your personalized caffeine tracker for iPhone and Apple Watch. It uses your unique metabolism profile to calculate your real-time caffeine level and tell you exactly when you're safe to sleep. Whether you're optimizing your morning coffee routine or making sure that afternoon espresso won't keep you up, Caffeine Rhythm gives you the insights you need to make smarter caffeine choices every day. FEATURES: • Real-time caffeine decay tracking with personalized half-life • Sleep safety countdown — know when you're safe to sleep • Coffee shop menus — Starbucks, Dunkin', McCafé, Costa, Blue Bottle, Peet's, Dutch Bros • Streak tracking and gamification • Apple Watch app with complications • Home Screen and Lock Screen widgets • HealthKit integration — caffeine intake and sleep correlation • Live Activities and Dynamic Island • Smart weekly insights powered by AI SUBSCRIPTION INFORMATION: • Free trial available — try all premium features for 7 days before subscribing • Monthly plan: $2.99/month • Yearly plan: $19.99/year (best value) • Subscription automatically renews unless cancelled at least 24 hours before the end of the current period • Payment will be charged to your Apple ID account at the confirmation of purchase • You can manage and cancel your subscriptions by going to Settings > Apple ID > Subscriptions Privacy Policy: https://hatchingpoint.com/caffeinerhythm/privacypolicy Terms of Use: https://hatchingpoint.com/caffeinerhythm/terms

Screenshots

Privacy Vault4 screens
Caffeine Rhythm4 screens

Verdict

The call

The clearest difference is review sentiment: Caffeine Rhythm at 100% against Privacy Vault's 33%. Caffeine Rhythm also leads on price (Free vs $2.99) and device support (3 vs 1). Privacy Vault's advantage is in-app purchases (none vs 2) and ads (none vs shown). On 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

Caffeine Rhythm is free to download; Privacy Vault costs $2.99 up front. Caffeine Rhythm sells 2 in-app purchases, starting at $1.99 per month. Privacy Vault asks for nothing beyond the download.

UpkeepUpdate frequency

Privacy Vault ships an update every 11 days, Caffeine Rhythm every 3 weeks. The most recent releases landed on October 8, 2026 and October 10, 2026 respectively.

Scorecard7 real differences · 3 level
Privacy Vault versus Caffeine Rhythm: the parameters behind the verdict, then further details
ParameterPrivacy VaultCaffeine Rhythm
Price$2.99Free — better
Rating—5.0 (1 ratings) — better
Positive reviews33.3% of reviews100.0% of reviews — better
Number of ratings—1 — better
Update frequencyEvery 11 days — betterEvery 3 weeks
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationPaidFreemium — better
DevicesiPhoneiPhone, iPad, Apple Watch — better
Requires iOS17.017.0
Further details — not scored
Size22 MB23 MB
Age rating4+4+
DeveloperNAICAI LIHatching Point LLC

Customer experience

Privacy Vault

Written reviews3 reviews
Positive33.3%
Neutral66.7%
Negative0.0%

Caffeine Rhythm

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

In-app purchases

None

Privacy Vault

No in-app purchases

2 purchases

Caffeine Rhythm

Subscriptions2
  • Monthly Premium7 Days trial$1.991 Month
  • Yearly Premium7 Days trial$9.991 Year

Questions

Is Privacy Vault free?
Privacy Vault costs $2.99, with no in-app purchases.
Is Caffeine Rhythm free?
Caffeine Rhythm is free to download, with in-app purchases available.
Do Privacy Vault or Caffeine Rhythm have ads?
Caffeine Rhythm shows ads; Privacy Vault does not.
Which is updated more often, Privacy Vault or Caffeine Rhythm?
Privacy Vault ships an update every 11 days, and Caffeine Rhythm every 3 weeks. Most recently, Privacy Vault was updated on October 8, 2026 and Caffeine Rhythm on October 10, 2026.

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