Comparison

The Abyss vs bighelp

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

Head to head
About

The Abyss

Control your self-hosted AI agent from your iOS device. Stream responses live, see tool usage, and attach images. Supports hands-free voice commands and offline transcript viewing. Manage multiple AI instances with a privacy-first design.

Highlights
  • Live token streaming for AI responses
  • Transparent tool call visualization
  • Multimodal input with image attachments
  • Hands-free voice mode with on-device transcription
  • Server-side, searchable conversation history
  • Support for multiple AI backends
  • Privacy-first design with local data storage
Features
Read full description

The Abyss is the iOS companion for Hermes - your self-hosted AI agent running on your own machine. Connect over your local network or Tailscale, send prompts, watch the agent think and reach for tools in real time. The Abyss is a remote control. Hermes is the brain. You own both. Built for people who already host their own things. CHAT - Live token streaming. Watch the agent's reply appear as it's generated. - Transparent tool calls. See the agent reach into your shell, files, or the web - with each tool's name and arguments shown as a card. - Multimodal. Attach images from the photo library and send them with your prompt. - Slash commands. Trigger agent-side commands from a clean, keyboard-friendly composer. VOICE MODE - Hands-free conversation. Dictate prompts and hear the reply spoken back. - On-device transcription. Your voice is transcribed locally; the text is what gets sent to your agent. - Bring-your-own TTS. If your Hermes backend streams text-to-speech, you hear the agent in a neural voice; otherwise it falls back to iOS voices. SESSIONS - Server-side history. Every conversation lives on your own Hermes server, not ours. - Searchable, renameable, pinnable. Find the thread you need, give it a name, keep it on top. - Local cache. Scroll the transcript even when you're offline. MULTIPLE BACKENDS - Run more than one Hermes instance? Add them all. Switch active with one tap. - Pair a second device by scanning a QR code. Credentials never cross our servers - we don't have any. - Each backend gets its own identity colour so you always know which agent you're talking to. DEMO MODE - Not running Hermes yet? Try the demo. A scripted preview shows how the real client behaves, without any setup. No account, no network, no obligation. PRIVACY-FIRST BY DESIGN - All credentials live in iOS Keychain. Face ID required before revealing or sharing them. - No analytics. No third-party SDKs. No telemetry. - The Abyss only talks to the backends you point it at. Apple processes any future purchases; that's the only third party in the loop. - App data flows between your device and your own Hermes backend. Nothing else. REQUIREMENTS - A running Hermes Agent on a machine you control. - Network reachability to that machine. Same Wi-Fi works; Tailscale (or another mesh) is recommended if you want to reach the agent from anywhere. The Abyss is not a hosted AI service. It is a remote control for an AI agent you host yourself.

About

bighelp

Interact with AI agents through a streamlined interface. Message agents individually or in groups, manage their identities, and build custom workflows. Schedule tasks, utilize voice commands, and receive notifications across devices.

Highlights
  • Individual and group agent messaging
  • Customizable agent profiles
  • Node-style workflow builder
  • Scheduled tasks and reminders
  • Voice interaction (turn-based and live)
  • Cross-device notifications and widgets
  • Approval system for agent actions
Features
Read full description

bighelp is a streamlined way to work with the AI agents you run with Hermes. Whether you want a simple chat interface, or a full fleet command center, bighelp has it covered. CHATS THAT FEEL LIKE TEXTING • Message any of your agents one on one • Watch replies arrive as they're written • Type, talk, or share photos and files • Pick up any conversation right where you left off GROUP CHATS • Pull several agents into one thread • Mention who should take what, and they split the work A FACE FOR EVERY AGENT • Give each agent a name, a face and a job • Live avatars show when an agent is thinking, working or waiting on you WORKFLOWS Build and manage custom node-style workflows for repeatable processes across your agents! YOU STAY IN CHARGE • Approvals let an agent ask before it acts • Agents can reply with cards and forms, so choosing is one tap TASKS ON A SCHEDULE • Set up a morning brief, a weekly budget check-in or a fare watch • Pause or change a task anytime VOICE • Talk it through, turn by turn or live • Turn-based voice is transcribed on your device EVERYWHERE YOU ARE • Notifications, Live Activities, widgets and Shortcuts • An Apple Watch app for quick replies and approvals • Works on iPhone and iPad • Light and dark themes NERD MODE Everyday controls stay simple. Turn on Nerd Mode in Settings to reveal host tools like files, plugins and logs. OPTIONAL DEVICE TOOLS With your permission, agents can add to your Calendar and Reminders and see where you are. Each is off until you turn it on under Permissions. HOW BIGHELP CONNECTS bighelp connects directly to a Hermes host you run, such as your own Mac, over your home network, Tailscale or HTTPS. Sign in with that host's own login. No separate bighelp account is needed. The free bighelp plugin for Hermes adds notifications, live voice, cards and the Feed. Your Hermes host remains the agent engine. AI, voice, storage and infrastructure providers configured on that host may process data under their own terms and may require separate accounts or subscriptions.

Screenshots

The Abyss4 screens
bighelp4 screens

Verdict

The call

The clearest difference is review sentiment: bighelp at 100% against The Abyss's 0%. bighelp also leads on rating (5.0 vs 3.0) and update cadence (daily vs every 2 months). On price, ads, in-app purchases and monetization model 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.

ReceptionRating · Positive reviews · Number of ratings

bighelp holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 1 and 4 respectively. Written reviews point the same way: 0% of The Abyss's written reviews are positive against 100% of bighelp's.

UpkeepUpdate frequency

The Abyss ships an update every 2 months, bighelp daily. Both last shipped on November 10, 2026.

Scorecard6 real differences · 4 level
The Abyss versus bighelp: the parameters behind the verdict, then further details
ParameterThe Abyssbighelp
PriceFreeFree
Rating3.0 (1 ratings)5.0 (4 ratings) — better
Positive reviews0.0% of reviews100.0% of reviews — better
Number of ratings14 — better
Update frequencyEvery 2 monthsDaily — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhoneiPhone, iPad, Apple Watch, Vision Pro — better
Requires iOS26.517.0 — better
Further details — not scored
Size11 MB102 MB
Age rating4+4+
DeveloperVladimir AdamovicColton Coan

Customer experience

The Abyss

All ratings1 ratings
Positive0.0%
Neutral100.0%
Negative0.0%
Written reviews1 reviews
Positive0.0%
Neutral100.0%
Negative0.0%

bighelp

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

The Abyss

No in-app purchases

None

bighelp

No in-app purchases

Questions

Is The Abyss free?
The Abyss is free to download, with no in-app purchases.
Is bighelp free?
bighelp is free to download, with no in-app purchases.
Which has better reviews, The Abyss or bighelp?
bighelp is rated higher. The Abyss averages 3.0 out of 5 from 1 ratings, while bighelp averages 5.0 from 4 ratings.
Do The Abyss or bighelp have ads?
Neither The Abyss nor bighelp shows ads.
Which is updated more often, The Abyss or bighelp?
The Abyss ships an update every 2 months, and bighelp daily. Most recently, The Abyss was updated on November 10, 2026 and bighelp on November 10, 2026.

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