Comparison

Cipher Message vs ARK

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

Head to head
About

Cipher Message

Easily encrypt and decrypt messages within your messaging app using various classic ciphers. Protect your conversations with friends and upgrade for advanced encryption methods and Face ID unlock.

Highlights
  • Encrypt/decrypt in iMessage
  • Classic ciphers (Caesar, Vigenère)
  • Advanced ciphers (AES)
  • Face ID unlock
  • Private conversations
Read full description

Cipher Message is an App and iMessage Extension that lets you easily encrypt and decrypt messages right inside the Messages app. Choose from classic ciphers like Caesar and Vigenère, Rail Fence, or Playfair to protect your conversations, or upgrade to Premium to enable AES (password) and add Face ID to lock the message. Simply select your cipher, type your message, set your key, and then encrypted and send to your friends. They can decrypt your message using the same extension, keeping your chats private and fun. Features: - Encrypt and decrypt messages directly in iMessage - Supports Caesar, Vigenère, Rail Fence, and Playfair - Easy-to-use interface - Share encrypted messages with friends - Keep your conversations private Upgrade to Premium to enjoy: - No Ads - Additional Ciphers and Encryption Methods: - AES (set your own password) - Face ID Secondary Encryption (disclaimer: does not use FaceID to encrypt, only requires FaceID of recipient to unlock message)

About

ARK

Features
Read full description

ARK – Emergency Tools ARK – Emergency Tools is an Advanced Readiness Kit designed to help you stay prepared when traditional communication networks are unavailable. Built for emergency preparedness, disasters, and remote situations, ARK focuses on offline-first functionality, providing access to essential tools even when cellular service or internet connectivity is limited or unavailable. Designed for When Networks Fail Most apps depend on constant connectivity. ARK is built differently. Core features are designed to remain usable during: Natural disasters Power outages Remote or backcountry travel Infrastructure disruptions ARK helps you stay organized and prepared when conditions are uncertain and network reliability cannot be assumed. Offline-First by Design ARK prioritizes local operation, reliability, and simplicity. Essential features function using on-device capabilities, allowing the app to remain useful when connectivity is limited or unavailable. Some advanced communication features may require compatible external hardware to operate beyond standard device range. Hardware Compatibility ARK is designed to work independently on your device while also supporting optional hardware-based expansion. Certain extended-range or mesh-based communication capabilities may require compatible external hardware, which is not included with the app. Hardware availability and supported features may vary by region and configuration. The app remains functional without additional hardware, with expanded capabilities becoming available when supported devices are paired. Expandable Readiness Platform ARK is built as a modular preparedness platform. As the system evolves, future updates and optional hardware integrations may extend functionality while preserving reliability, clarity, and user control. This design allows ARK to scale from basic readiness tools to more advanced emergency use cases over time. Privacy & Local Control ARK is designed with privacy in mind. Data is stored locally on your device, and core functionality does not rely on constant cloud connectivity. This approach helps ensure availability and control when external services may be unreliable. Who ARK Is For Individuals and families preparing for emergencies Outdoor and remote travelers Professionals working in low-connectivity environments Anyone who values preparedness and self-reliance ARK does not replace emergency services. It is a preparedness tool designed to support readiness and organization when traditional systems are unavailable or unreliable.

Screenshots

Cipher Message4 screens
ARK4 screens

Verdict

The call

The clearest difference is price: Cipher Message at Free against ARK's $1.99. ARK's advantage is in-app purchases (none vs 1) and ads (none vs shown). On update cadence, 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

Cipher Message is free to download; ARK costs $1.99 up front. Cipher Message sells 1 one-off in-app purchase. ARK asks for nothing beyond the download.

UpkeepUpdate frequency

Cipher Message ships an update fortnightly, ARK every 10 days. The most recent releases landed on October 1, 2026 and October 7, 2026 respectively.

Scorecard3 real differences · 6 level
Cipher Message versus ARK: the parameters behind the verdict, then further details
ParameterCipher MessageARK
PriceFree — better$1.99
Rating5.0 (2 ratings) — better—
Number of ratings2 — better—
Update frequencyFortnightlyEvery 10 days — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad
Requires iOS18.517.0 — better
Further details — not scored
Size21 MB3 MB
Age rating12+4+
DeveloperNathaniel Van EveraGaelon Swift

In-app purchases

1 purchases

Cipher Message

One-time1
  • Cipher Message Premium$0.99
None

ARK

No in-app purchases

Questions

Is Cipher Message free?
Cipher Message is free to download, with in-app purchases available.
Is ARK free?
ARK costs $1.99, with no in-app purchases.
Do Cipher Message or ARK have ads?
Cipher Message shows ads; ARK does not.
Which is updated more often, Cipher Message or ARK?
Cipher Message ships an update fortnightly, and ARK every 10 days. Most recently, Cipher Message was updated on October 1, 2026 and ARK on October 7, 2026.

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