Comparison

u64 vs Enigma Cipher The Unbreakable

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

Head to head
About

u64

Remotely manage your Ultimate64, Ultimate II+, or Commodore 64 Ultimate hardware from your iPhone. Control device functions, mount disk images, play music, and edit memory wirelessly.

Highlights
  • Remote device control (reset, reboot, pause)
  • Load PRG, cartridge, SID, and MOD files
  • Mount/unmount D64, G64, D71, G71, D81 disk images
  • Memory editor with peek/poke
  • Send text commands via keyboard buffer
  • Access and modify device settings
  • Real-time drive state monitoring
Features
Read full description

Control your Ultimate64, Ultimate II+, or the new Commodore 64 Ultimate directly from your iPhone. Mount disks, play SID music, manage files, and configure your device — all wirelessly over your local network. DEVICE CONTROL Reset, reboot, pause, resume, and power your machine remotely. Load PRG programs, cartridge files, SID tunes, and MOD audio instantly. DISK MANAGEMENT Mount and unmount D64, G64, D71, G71, and D81 disk images without leaving your chair. DEVELOPMENT TOOLS Peek and poke memory addresses with the built-in memory editor. Send text commands through the keyboard buffer for automation and testing. CONFIGURATION Access and modify device settings. Save configurations to flash memory for permanent storage. STATUS MONITORING View real-time drive states, mounted images, and device information with instant feedback. Connects via Ethernet or Wi-Fi on your local network. Auto-discovers compatible devices. Perfect for retro gaming, C64 development, digital preservation, and educational use. Requires Ultimate64, Ultimate II+, Ultimate II, or Commodore 64 Ultimate hardware with network connectivity and REST API support.

About

Enigma Cipher The Unbreakable

Transform your iPhone into a WWII Enigma machine. Send and receive encrypted messages with custom rotors and reflectors for virtually unbreakable ciphers. Supports all languages and integrates with any app for seamless encryption and decryption.

Highlights
  • WWII Enigma machine simulation
  • Custom rotor and reflector design
  • iMessage Extension for encrypted messages
  • Enigma Keyboard for any app
  • Share Extension for instant encryption/decryption
  • Offline functionality
  • QR code sharing of settings
Features
Read full description

Turn your iPhone into an authentic WWII Enigma machine. Send encrypted iMessages that only recipients with matching settings can decode — just like the real thing. Make your cipher unbreakable by defining your own custom rotors and reflectors, eliminating the historical Enigma's notorious no-self-encrypt weakness. Cipher any language in any app with the Enigma Keyboard and Share Extension. HOW IT WORKS The Enigma cipher routes each keypress through a cascade of rotors and a reflector, substituting letters in a way that advances with every press. The simulated historical machine uses different rotor types, reflector types, positions, ring settings, and plugboard pairs — producing ciphered text exactly as it was done in history. The app also revitalises the historical machine by letting you define custom rotors and reflectors. Custom reflectors can include fixed points, eliminating the no-self-encrypt weakness. The expanded code space reaches 26! × 26! × 26! — approximately 10^78 — making messages virtually unbreakable. Enigma Cipher also supports all world languages, and lets you cipher and decipher in any iPhone app via the Enigma iMessage Extension, Enigma Keyboard, and Enigma Share Extension. FEATURES · iMessage Extension — compose and send encrypted bubbles directly in Messages; tap a received bubble to decrypt · Custom Keyboard — type encrypted text in any app, with a compose area showing plaintext and ciphertext side by side · Share Extension — highlight any text in any app and decrypt or encrypt it instantly · 5 historical rotors (I–V), 3 reflectors (UKW-A/B/C), and a 10-pair plugboard · Design your own custom rotors and reflectors with a visual wiring editor and randomizer; add fixed points to your reflector to eliminate no-self-encrypt · Share Enigma settings with another iPhone via QR code display and scan · Codebook — save, load, and share machine configurations · Signal path animation — watch each keypress travel through rotors, reflector, and back · Brass and mahogany UI inspired by the original hardware · Sound effects · Fully offline — no account, no server, no data collection THE MACHINE The container app is your settings and codebook control centre. A gear dial row at the top shows rotor positions in real time. Change rotors and rewire plugboard cables with a realistic interactive UI. The tester lets you encrypt and decrypt on a lampboard-style keyboard, with paper tape strips for input and output. All settings — rotor choices, ring settings, reflector, plugboard, and initial positions — are shared across the Enigma Keyboard, iMessage Extension, and Share Extension. SHARING SETTINGS Export your machine configuration as a QR code to share with a friend. Both devices must use identical settings to exchange readable messages — exactly how Enigma operators coordinated in the field. PRIVACY Enigma Cipher is fully offline. No data ever leaves your device. No analytics, no tracking, no ads.

Screenshots

u644 screens
Enigma Cipher The Unbreakable4 screens

Verdict

The call

The clearest difference is price: Enigma Cipher The Unbreakable at Free against u64's $0.99. u64's advantage is rating (5.0 vs 3.7) and iOS requirement (13.0 vs 26.2). On ratings volume, ads, in-app purchases 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

Enigma Cipher The Unbreakable is free to download; u64 costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

u64 holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 2 and 3 respectively.

Scorecard4 real differences · 5 level
u64 versus Enigma Cipher The Unbreakable: the parameters behind the verdict, then further details
Parameteru64Enigma Cipher The Unbreakable
Price$0.99Free — better
Rating5.0 (2 ratings) — better3.7 (3 ratings)
Number of ratings23 — better
Update frequencyEvery 3 months—
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better26.2
Further details — not scored
Size21 MB4 MB
Age rating4+4+
DeveloperMarcin SpoczynskiXiaochuan Huang

In-app purchases

None

u64

No in-app purchases

None

Enigma Cipher The Unbreakable

No in-app purchases

Questions

Is u64 free?
u64 costs $0.99, with no in-app purchases.
Is Enigma Cipher The Unbreakable free?
Enigma Cipher The Unbreakable is free to download, with no in-app purchases.
Which has better reviews, u64 or Enigma Cipher The Unbreakable?
u64 is rated higher. u64 averages 5.0 out of 5 from 2 ratings, while Enigma Cipher The Unbreakable averages 3.7 from 3 ratings.
Do u64 or Enigma Cipher The Unbreakable have ads?
Neither u64 nor Enigma Cipher The Unbreakable shows ads.

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