Hermes Agent vs Synapse
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Hermes Agent
Create and manage personalized AI assistants for various tasks. Automate workflows, generate ideas, and organize conversations. This tool helps users work faster and turn concepts into structured outcomes.
- Create custom AI assistants
- Automate workflows
- Generate ideas and content
- Organize chat history
- Manage AI conversations
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Grabnix - AI Core is an AI assistant app designed to help you create, organize, and manage smart AI-powered workflows directly from your device. Build your own AI assistant, ask questions, generate ideas, automate routine tasks, and keep your conversations saved in one place. Grabnix - AI Core helps you work faster, stay organized, and turn your ideas into structured results. With Grabnix - AI Core, you can: Create your own AI assistant Set up an assistant for your personal or professional tasks. Automate your workflow Use AI to support planning, writing, brainstorming, task organization, and productivity. Ask anything and get answers Use the chat interface to ask questions, generate content, or receive clear responses for your tasks. Save every idea Keep your chat history organized and return to previous conversations whenever you need them. Control your AI experience Rename, manage, and delete chats to keep your workspace clean and convenient. Grabnix - AI Core is useful for creators, students, professionals, entrepreneurs, and anyone who wants a simple AI workspace for daily tasks and ideas. Subscription Information Subscription Payment: Subscription payments will be charged to your iTunes account at confirmation of purchase and at the beginning of each renewal period. The subscription automatically renews unless it is canceled. Subscription Cancellation: You can cancel your subscription in your iTunes settings at least 24 hours before the end of the next subscription cycle. Cancellation will take effect on the day after the last day of the current subscription period, and you will be downgraded to the free version of the service. Privacy Policy: https://docs.google.com/document/d/1zcRYMpi5-OwDwEyXt51IlJYETGaBnw3bdv8rF_LMuBk/edit?usp=sharing Terms and Conditions: https://docs.google.com/document/d/1vjmtadumquH-nQm3LtlhuGU_nxg4gZLEVxMXIB6pH8Q/edit?usp=sharing
Synapse
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Speak, and Synapse turns what you say into an organized note with a title, a summary, key points and a list of action items. Everything happens on your iPhone: your voice is never sent to a server. Built for people who handle sensitive information, like lawyers, doctors, journalists and executives, and for anyone who would rather keep their ideas in their pocket. TRULY PRIVATE • Transcription and AI run on your device. No servers, no cloud, no account. • Works in Airplane Mode, on the subway or in the mountains. • We collect no data: no analytics, no ads. HOW IT WORKS • Tap and talk: a quick idea or a whole meeting. You see the text as you speak. • When you stop, your device's AI reads the whole transcript, however long: it adds a title, writes a summary, sorts the key points into sections and pulls out the action items. • The note keeps what you said, word for word, split into paragraphs where you pause. • Check off tasks, copy the note as Markdown or send it to Obsidian. KNOWS WHO SAID WHAT • Record a meeting or a conversation and each person gets their own turns in the note. • Tap a name to rename it: the change reaches the title, the summary and the action items too. IN 25 LANGUAGES • Transcribes 25 European languages, including English, Spanish, French, German, Italian and Portuguese. • It detects the language you speak, or you choose the language of the note. TURN VOICE MESSAGES INTO NOTES • Got a long voice message on WhatsApp or Telegram, or a recording in Files? Share it to Synapse and get a transcript, a summary and action items. • On iPad, drag one or several audio files onto Synapse and each becomes a note. • The audio is processed on your device and is never uploaded. FOR EVERY MOMENT • Apple Watch: capture an idea from your wrist. • CarPlay: dictate an idea from your car's screen and see your recent notes. • iPad: review and organize your notes on a bigger screen. NO SIGN-UP • No email, no password, no credit card. • No note limit: only your device's storage. UPFRONT ABOUT HOW IT WORKS • On first launch, Synapse asks before downloading its speech models: Parakeet, an open speech recognition model based on NVIDIA's work, and a small model that tells speakers apart (about 800 MB in total). They download once; after that everything works offline. • Titles, summaries and action items come from Apple Intelligence, built into the system. Synapse requires a device that supports Apple Intelligence (iPhone 15 Pro or later, or an iPad with Apple Intelligence) with Apple Intelligence turned on. From a thought to an organized note, without anyone else reading it.
Screenshots
Verdict
The clearest difference is in-app purchases: Synapse at none against Hermes Agent's 18. Synapse also leads on device support (3 vs 1). Hermes Agent's advantage is iOS requirement (17.6 vs 26.0). 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
Both are free to download. Hermes Agent sells 15 in-app purchases, starting at $4.99 per 7 days. Synapse asks for nothing beyond the download.
Both ship on a similar rhythm, roughly every 4 days. The most recent releases landed on October 31, 2026 and October 24, 2026 respectively.
| Parameter | Hermes Agent | Synapse |
|---|---|---|
| Price | Free | Free |
| Rating | 3.4 (49 ratings) — better | — |
| Positive reviews | 70.8% of reviews | — |
| Number of ratings | 49 — better | — |
| Update frequency | Every 4 days | Every 4 days |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | — |
| Devices | iPhone | iPhone, iPad, Apple Watch — better |
| Requires iOS | 17.6 — better | 26.0 |
| Further details — not scored | ||
| Size | 43 MB | 19 MB |
| Age rating | 17+ | 4+ |
| Developer | Sofia Karagianni | Luis Tiburcio de la Cruz Fernandez |
In-app purchases
Hermes Agent
- AI Core Pro2 variants$4.997 Days
- AI Core Pro$9.997 Days
- premium$14.991 Month
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- AI Core Pro$19.991 Month
- AI Core Pro$29.991 Month
- AI Core Pro2 variants$39.991 Year
- premium$59.991 Year
- AI Core Pro$69.991 Year
- AI Core Pro$79.991 Year
- AI Core Pro$89.991 Year
- Tokens2 variants$9.99
- Tokens$19.99
- Tokens$34.99
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- Tokens$59.99
- Tokens$99.99
Synapse
No in-app purchases









