Comparison

Threema OnPrem vs APPEIRON

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

Head to head
About

Threema OnPrem

This secure messaging solution offers organizations complete data sovereignty by hosting on their own servers. It provides end-to-end encrypted communication for teams, including voice and video calls, and secure file sharing, all protected by PIN or fingerprint.

Highlights
  • Self-hosted solution
  • Complete data sovereignty
  • End-to-end encrypted calls
  • Secure file sharing
  • Cross-platform compatibility
  • PIN/fingerprint chat protection
Features
Read full description

Threema OnPrem is the self-hosted communication solution for organizations with the highest security requirements. The combination of Threema’s proven security architecture and complete data sovereignty creates an independent communication environment that is unmatched in terms of confidentiality – ideal for government agencies, police forces, and industrial companies. Advantages of Threema OnPrem: • 100% data sovereignty through hosting on your own servers • Proven Threema security architecture • Confidential communication in teams, groups, and projects • End-to-end encrypted voice and video calls • Secure exchange of files and documents in all formats • Cross-platform use thanks to mobile app, desktop app, and web client • Additional protection of confidential chats with PIN or fingerprint NOTE: Before you can use this app, Threema OnPrem must be set up on your company server. For more information, visit threema.com/onprem. Enjoy using Threema OnPrem!

About

APPEIRON

Features
Read full description

APPEIRON is a privacy-first encrypted messenger — security you can see. Chat and call with end-to-end encryption designed so only you and your contacts can read the content. No phone number or email account is required: your identity is created locally on your device. KEY FEATURES • Encrypted messaging — text, photos, voice, and video • Voice and video calls with WebRTC • Quantum Vault — encrypted local storage (Pro+) • Security Health — entropy and crypto status you can check • Proof-of-Read seals and VoiceGuard caller verification • Dead Man’s Switch — basics on Pro+; encrypted backup options on higher plans • Mesh mode for nearby communication when internet is limited (Pro+) • Optional group chats and team features on higher plans PLANS • Base — one-time purchase: chats, contacts, and 1:1 calls • Pro+ — one-time purchase: Vault, Mesh, and advanced privacy tools • Guardian — one-time purchase: guardian protection • Team — subscription with a 7-day free trial Purchases are handled through the App Store. The Team subscription can be canceled in Apple ID settings. Privacy Policy: https://appeiron.app/privacy More: https://appeiron.app/

Screenshots

Threema OnPrem4 screens
APPEIRON4 screens

Verdict

The call

The clearest difference is in-app purchases: Threema OnPrem at none against APPEIRON's 11. APPEIRON's advantage is device support (4 vs 2) and iOS requirement (15.1 vs 17.0). On price, update cadence and 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

Both are free to download. APPEIRON sells 11 in-app purchases, starting at $9.99 per month. Threema OnPrem asks for nothing beyond the download.

UpkeepUpdate frequency

Threema OnPrem ships an update weekly, APPEIRON every 5 days. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

Scorecard3 real differences · 7 level
Threema OnPrem versus APPEIRON: the parameters behind the verdict, then further details
ParameterThreema OnPremAPPEIRON
PriceFreeFree
Rating5.0 (3 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings3 — better—
Update frequencyWeeklyEvery 5 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad, iPod, Apple Watch — better
Requires iOS17.015.1 — better
Further details — not scored
Size111 MB170 MB
Age rating4+4+
DeveloperThreema GmbHPJ Horelican

In-app purchases

None

Threema OnPrem

No in-app purchases

11 purchases

APPEIRON

Subscriptions8
  • APPEIRON Pro7 Days trial$9.991 Month
  • APPEIRON Pro+7 Days trial$10.991 Month
  • APPEIRON Guardian7 Days trial$19.991 Month
Show 5 more
  • APPEIRON Team7 Days trial$24.991 Month
  • APPEIRON Pro7 Days trial$79.991 Year
  • APPEIRON Pro+7 Days trial$119.991 Year
  • APPEIRON Guardian7 Days trial$149.991 Year
  • APPEIRON Team7 Days trial$249.991 Year
One-time3
  • APPEIRON Base$5.99
  • APPEIRON Pro+$29.99
  • APPEIRON Guardian$39.99

Questions

Is Threema OnPrem free?
Threema OnPrem is free to download, with no in-app purchases.
Is APPEIRON free?
APPEIRON is free to download, with in-app purchases available.
Do Threema OnPrem or APPEIRON have ads?
Neither Threema OnPrem nor APPEIRON shows ads.
Which is updated more often, Threema OnPrem or APPEIRON?
Threema OnPrem ships an update weekly, and APPEIRON every 5 days. Most recently, Threema OnPrem was updated on October 24, 2026 and APPEIRON on October 28, 2026.

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