Hermex vs Presto Voice

Side-by-side comparison of features, pricing, and ratings

Analysis reviewed Live tool data as of 2026-09-14
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At a glance

DimensionHermexPresto Voice
PricingFree (self-hosted Hermes agent required)Contact for pricing (custom quote for QSR chains)
Target UserSelf-hosting enthusiasts and Hermes agent usersQSR chains and franchise networks
Best ForMobile access to self-hosted AI agentsDrive-thru automation and upselling
Key FeatureNative iOS client, streaming responses, file attach95% non-intervention rate, upselling engine
Latest News ImpactHermes Agent open-source release with persistent memory (Jun 2026) – enhanced agent capabilityDairy Queen partnership (Apr 2026) – growing enterprise adoption
DeploymentSelf-hosted (hermes-webui on your machine), add-on appCloud-hosted, integrates with POS/headsets

If you run a QSR chain aiming to boost drive-thru revenue and reduce labor costs, Presto Voice is the proven choice with up to 95% automation and a robust upselling engine. If you are a privacy-conscious developer who already uses or wants to try the open-source Hermes Agent, Hermex is a free, polished iOS companion for remote agent control. They serve completely different needs – pick based on whether your primary challenge is restaurant operations or personal AI agent mobility.

Hermex
Hermex

Hermex puts your self-hosted Hermes agent on your iPhone — free, no IAP, no telemetry, and no relay between phone and server.

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Presto Voice
Presto Voice

Presto Voice is managed drive-thru voice AI that takes orders and upsells for large QSR chains.

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Pricing
Free
Contact Sales
Plans
$0/mo
Popularity
10 views
7.5k views
Skill Level
Intermediate
Intermediate
API Available
Platforms
Mobile
API
Categories
🛠️ Autonomous Coding Agents
🍽️ Restaurant & Hospitality☎️ Voice AI Agents & Phone Automation
Features
Native iPhone client for a self-hosted Hermes agent (iOS 18+)
Real-time streaming of Hermes agent responses
Session creation and management from the phone
Switch models and profiles mid-session
Steer reasoning settings from the app
Attach files from iPhone to an agent session
Browse files in the remote workspace
Connect over Cloudflare Tunnel (HTTPS) or Tailscale (private WireGuard)
Server password authentication; password not stored after login
No analytics, ads, or tracking
Read-only offline cache of recent conversations (7 days / 5,000 messages), clearable
Server URL stored in the iOS Keychain
Open source under the MIT license; full iPhone app source on GitHub
Triple-slash health check via the server's /health endpoint on Test Connection
iPad support (listed as coming soon)
Automated drive-thru order taking via voice AI
Spectrum of Voice AI models for multi-brand menu adaptation
Continuous upselling of add-ons and specials to raise average order value
Up to 95% non-intervention rate on drive-thru orders
Up to 88% upsell offer rate
Up to 6% monthly incremental revenue increase
24/7 drive-thru availability
Installation at scale with minimal disruption to live lanes
Integration with major POS and headset providers
Managed deployment and ongoing support included
Measurable ROI metrics (non-intervention, upsell, revenue lift)
National rollout experience at Taco John's, Wienerschnitzel, and Dairy Queen
15+ years of restaurant industry experience
Optimizes staff efficiency and order accuracy
Integrations
Cloudflare Tunnel
Tailscale
Grafana

What real users say: Hermex vs Presto Voice

Not marketing copy and not our opinion — a structured sweep of public discussion (reviews, forums, communities and video comments), showing what people praise and what they complain about for each tool.

Hermex

12 mentions across 2 sources · 68% positive (averaged across 2 sources)

Hacker News, App Store

What users praise

  • Clean, native iOS interface with no analytics or tracking.
  • Real-time streaming of agent responses from your server.
  • Easy Cloudflare Tunnel or Tailscale setup for secure remote access.
  • Full control over sessions, models, profiles, and file attachments.

What frustrates them

  • App gets laggy with long conversations; needs optimization.
  • Fails on large context loads, causing sync delays.
  • Cannot continue sessions started from desktop Hermes TUI.
  • Lacks native live voice mode available in desktop app.

Researched Jul 3, 2026

Presto Voice

38 mentions across 3 sources · 39% positive — critical (weighted across 3 sources)

YouTube, App Store, Lemmy

What users praise

  • National deployments (Taco John's, Wienerschnitzel, Dairy Queen) signal enterprise trust.
  • Claims of up to 6% incremental revenue growth per month.
  • Upselling engine reportedly boosts average order value.
  • Managed full-stack model removes need for in-house AI development.

What frustrates them

  • No transparent pricing — contact sales for quotes.
  • Community data reveals zero independent user reviews of the product.
  • Potential confusion with Presto transit card's negative reputation.
  • Sales-led model may deter smaller operators from exploring it.

Researched Sep 8, 2026

Who should pick which

  • QSR franchise owner with 10+ drive-thru locations
    Pick: Presto Voice

    Presto Voice is built for chains: it automates drive-thru order taking (up to 95% non-intervention), includes upselling to boost revenue, integrates with POS and headsets, and has proven ROI with brands like Dairy Queen and Taco John's. Recent Dairy Queen partnership confirms enterprise adoption.

  • Solo developer running a self-hosted Hermes agent
    Pick: Hermex

    Hermex provides a native iOS interface for managing your agent remotely – stream responses, switch models, attach files – all without any third-party service. It's free and respects privacy. The latest Hermes Agent release with persistent memory enhances capabilities.

  • Privacy-conscious homelab enthusiast
    Pick: Hermex

    Hermex connects directly to your self-hosted agent via Cloudflare Tunnel or Tailscale, has no analytics/tracking, and keeps all data on your server. The app's design philosophy aligns with self-sovereign AI.

  • Restaurant operator with a single drive-thru and limited budget
    Pick: Presto Voice

    While Presto Voice is enterprise-focused, even a single location could benefit from its automation and upselling – but pricing is opaque. Contact sales to see if it fits. For very small operations, simpler solutions may be more cost-effective.

  • iOS user who wants to control a remote AI agent without cloud dependency
    Pick: Hermex

    Hermex delivers full agent control from iPhone with real-time streaming, file attachment, and reasoning settings. It requires technical setup, but fully eliminates third-party relays. A perfect match for those already using Hermes or similar open-source tools.

Frequently Asked Questions

Hermex vs Presto Voice: which should you choose?

If you run a QSR chain aiming to boost drive-thru revenue and reduce labor costs, Presto Voice is the proven choice with up to 95% automation and a robust upselling engine. If you are a privacy-conscious developer who already uses or wants to try the open-source Hermes Agent, Hermex is a free, polished iOS companion for remote agent control. They serve completely different needs – pick based on whether your primary challenge is restaurant operations or personal AI agent mobility.

Can Presto Voice be used for phone orders or only drive-thru?

Presto Voice includes phone ordering automation in addition to drive-thru, as listed in its features.

Does Hermex work with Android?

No, Hermex is iOS only (requires iOS 18+). Android and web/desktop support are not mentioned.

What hardware is needed for Presto Voice?

Presto Voice integrates with existing headset systems and POS at each drive-thru lane. Installation is described as easy at scale with minimal disruption.

Is Hermex a standalone AI agent or just a client?

Hermex is only a client. It requires a server running hermes-webui (open-source) which hosts the actual Hermes agent.

Does Presto Voice use a single voice AI model?

Presto Voice uses a spectrum of voice AI models including ElevenLabs, not just one, to handle diverse accents and noisy environments.

How does Hermex secure the connection to the agent?

It uses Cloudflare Tunnel or Tailscale for networking, plus server password authentication. No third-party relay is involved.

Can I try Presto Voice before purchasing?

The pricing page says 'contact sales', so a demo or trial may be available through their sales team. No self-service trial is documented.

Does Hermex support offline use?

Hermex provides a read-only offline cache of recent conversations, but real-time streaming requires a network connection to the agent server.

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Last reviewed: July 3, 2026