Auth Sync vs Caverno
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Auth Sync
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Auth Sync is a 2FA (TOTP) authenticator focused on privacy and simplicity. Generate and use OTP offline, then enable end-to-end encrypted cloud sync only when you need it. Your TOTP vault is encrypted on deviceβthe server has zero knowledge. Highlights TOTP add & scan: QR scan, manual input, 6/8 digits, SHA1/256/512, 30s/60s. Folders & search, tagging, quick copy. E2EE cloud sync on demand; encryption keys never leave your devices. Secure sharing across your own devices (E2EE). Export/Import with encrypted backups; import from common authenticators. Extras: password generator, temporary email, Base64 encode/decode. Local encrypted backups to Files/iCloud. Security True E2EE with zero-knowledge backend. No collection of TOTP contents. Integrity checks to protect your vault. How it works Add accounts (scan QR or enter secret). Use offline codes immediately. Sign in to enable E2EE Sync across devices. Export/Import for long-term backups.
Caverno
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Caverno is a powerful chat client for locally-hosted LLMs. Connect to Ollama, LM Studio, vLLM, or any OpenAI-compatible API endpoint and start chatting β no cloud required. KEY FEATURES β’ Any OpenAI-Compatible Server Connect to your own LLM running on localhost or your local network. Supports any endpoint that speaks the OpenAI API format. β’ Tool Calling (MCP Protocol) Extend your AI with real-time tools β web search, calculator, code execution, and more. Caverno uses the Model Context Protocol to let your LLM take actions. β’ Session Memory Your assistant remembers your preferences, constraints, and context across conversations. Memory is stored locally and fully under your control. β’ Voice In & Out Speak your messages and have responses read aloud. Configurable speech rate and auto-read options. β’ Image Attachments Attach photos from your library to include visual context in your conversations. β’ Multiple Conversations Create, switch, and manage separate chat threads. All conversations are persisted locally. β’ Assistant Modes Switch between General and Coding modes for different response styles tailored to your task. β’ Privacy First No account required. No data sent to third parties. All conversations and memory stay on your device β the only network connection is to the server you configure. GETTING STARTED 1. Install an OpenAI-compatible LLM server (Ollama, LM Studio, etc.) 2. Open Caverno and go to Settings 3. Enter your server URL and select a model 4. Start chatting! Caverno is designed for developers, AI enthusiasts, and anyone who wants full control over their AI assistant.
Screenshots
Verdict
The clearest difference is update cadence: Caverno at every 2 days against Auth Sync's every 3 months. Auth Sync's advantage is iOS requirement (15.1 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Auth Sync ships an update every 3 months, Caverno every 2 days. The most recent releases landed on October 30, 2026 and November 9, 2026 respectively.
| Parameter | Auth Sync | Caverno |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 months | Every 2 days β better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod β better | iPhone, iPad |
| Requires iOS | 15.1 β better | 26.0 |
| Further details β not scored | ||
| Size | 59 MB | 33 MB |
| Age rating | 4+ | 17+ |
| Developer | DREAMER NETWORK CO., LTD | Osamu Noguchi |
In-app purchases
Auth Sync
No in-app purchases
Caverno
No in-app purchases









