Comparison

ONSERVICE vs Dark Message Crypto Chat

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

Head to head
About

ONSERVICE

Read full description

ONSERVICE will help its partners to provide services in a convenient and quick way. In ONSERVICE App one can: ⁃ take orders, by scanning the QR codes of the purchased goods and services; ⁃ check the details of the orders; ⁃ administrate the performance of staff members; ⁃ monitor the statistics of the completed orders and many other things. ONSERVICE App will help you to optimize the process of work and simplify the interaction with partners.

About

Dark Message Crypto Chat

Securely encrypt messages, photos, and documents offline using military-grade encryption. Share encrypted content through any app, and recipients can decrypt it with a shared passphrase. Protect your private conversations and confidential documents without needing an internet connection.

Highlights
  • Offline encryption for messages, photos, and documents
  • AES-256-GCM military-grade encryption
  • PBKDF2 brute-force protection
  • No internet permissions
  • Secure passphrase storage in iOS Keychain
  • Supports various document types
Features
Read full description

Dark Message — encrypt messages and files without the internet Write the way you always do: in any messenger, in mail, in social networks. Dark Message turns text, photos and documents into an encrypted message that only the holder of the same key can read. Anyone who intercepts it sees a string of characters. WHY DARK MESSAGE • Fully offline. The app has no internet access at all: no servers, no accounts, no sign-up, no analytics. Keys and messages never leave your phone. • Strong encryption: AES-256-GCM, with the key derived from your passphrase by PBKDF2-HMAC-SHA512 (600,000 iterations). • Works over any channel: copy the encrypted text and paste it anywhere. .darkm files travel as ordinary attachments. • Encrypts more than text: photos and documents (PDF, Word, Excel, any file), keeping the file name. A KEY IN SECONDS • Show a QR code and read out a six-digit PIN. The key inside the code is encrypted with that PIN, so a photo of the screen is useless to anyone else. • A key fingerprint next to every chat: the same on two phones means the same key. EASY TO USE • A separate key for every contact or group. • One-tap decryption: paste the text or open the file. • Dark and light themes, English and Russian. • Passphrases live in the system keychain. WHO IT IS FOR Private conversations, business documents, contracts, medical and financial records, family passwords — anything nobody but the recipient should read. Open source: you can check for yourself how it works. Updates keep all your chats and keys.

Screenshots

ONSERVICE3 screens
Dark Message Crypto Chat4 screens

Verdict

The call

The clearest difference is iOS requirement: ONSERVICE at 11.0 against Dark Message Crypto Chat's 17.0. On price, update cadence, ads and in-app purchases 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

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

ONSERVICE ships an update every 3 months, Dark Message Crypto Chat every 6 months. The most recent releases landed on October 11, 2026 and October 3, 2026 respectively.

Scorecard1 real difference · 9 level
ONSERVICE versus Dark Message Crypto Chat: the parameters behind the verdict, then further details
ParameterONSERVICEDark Message Crypto Chat
PriceFreeFree
Rating—5.0 (2 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—2 — better
Update frequencyEvery 3 months — betterEvery 6 months
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPodiPhone, iPad
Requires iOS11.0 — better17.0
Further details — not scored
Size47 MB2 MB
Age rating4+4+
DeveloperMILEONAIR SOFTWARE DESIGN L.L.Caleksandr bronnikov

In-app purchases

None

ONSERVICE

No in-app purchases

None

Dark Message Crypto Chat

No in-app purchases

Questions

Is ONSERVICE free?
ONSERVICE is free to download, with no in-app purchases.
Is Dark Message Crypto Chat free?
Dark Message Crypto Chat is free to download, with no in-app purchases.
Do ONSERVICE or Dark Message Crypto Chat have ads?
Neither ONSERVICE nor Dark Message Crypto Chat shows ads.
Which is updated more often, ONSERVICE or Dark Message Crypto Chat?
ONSERVICE ships an update every 3 months, and Dark Message Crypto Chat every 6 months. Most recently, ONSERVICE was updated on October 11, 2026 and Dark Message Crypto Chat on October 3, 2026.

Other comparisons