Comparison

ScarfGo vs hYYa ink

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

Head to head
About

ScarfGo

This native iOS app connects to your self-hosted AI agent server, allowing you to manage sessions, browse memory, and view cron jobs on the go. It offers project-scoped chat and session resume capabilities, ensuring your data stays private and secure.

Highlights
  • Multi-server configuration
  • Project-scoped chat
  • Session resume
  • Memory editor
  • Cron job list viewer
  • Skills browser
Features
Read full description

ScarfGo is the iPhone companion to Scarf, the open-source macOS GUI for the Hermes AI agent. It connects from your phone to a Hermes server you operate — your Mac, a home Linux box, a cloud VM, anything reachable over SSH — and lets you run sessions, browse memory, manage cron jobs, and resume conversations on the go. A fully native iOS app, not a web view or a remote desktop. ScarfGo speaks SSH directly using a pure-Swift implementation, reads Hermes state via SFTP and SQLite snapshots, and streams real-time agent output over the Agent Client Protocol on a long-lived SSH exec channel. Every byte stays between your device and the Hermes host you configured. What you can do: • Multi-server. Configure as many Hermes hosts as you like and switch between them with a tap. Soft Disconnect keeps your credentials cached; Forget wipes a server end-to-end. • Dashboard. Stats and the 25 most recent sessions, with project badges so you can tell at a glance which work is which. • Project-scoped chat. Pick a project from your registry and ScarfGo writes the same Scarf-managed AGENTS.md context block the Mac app does, so the agent boots with the right project context. The resulting session is attributed correctly across both clients. • Session resume. Tap any row on the Dashboard to open that session's transcript in Chat. CLI-started sessions hydrate from the Hermes state database; ACP sessions show an empty-state because Hermes does not persist ACP transcripts to the database. • Memory editor. Read and edit MEMORY.md and USER.md with a Saved indicator that survives keyboard dismissal and a one-tap Revert. • Cron list. Human-readable schedules ("Every 6 hours", "Weekdays at 09:00") instead of raw cron expressions, plus a relative next-run estimate. Read-only in this release; editing comes in a future update. • Skills browser. Read-only category tree with the SKILL.md frontmatter chips (allowed tools, related skills, dependencies) the Mac app shows. • Settings viewer. Read-only inspection of your config.yaml. Edit values from the Mac app or a remote shell. Privacy. ScarfGo does not collect, transmit, or store your data on any server controlled by the developer. There are no analytics, no telemetry, no ad identifiers. SSH keys are generated on-device and stored in the iOS Keychain with the ThisDeviceOnly attribute, so they are unreachable while the device is locked and never sync to iCloud. The complete privacy policy lives at awizemann.github.io/scarf/privacy. Open-source under the MIT license. Source, issue tracker, and contributor docs at github.com/awizemann/scarf. Bug reports tagged component:scarfgo go straight to the developer. Requirements. iOS 18.0 or later. An SSH-reachable Hermes server (Hermes v0.10.0 or later recommended; full v0.11.0 features supported). Your phone needs to be able to reach that server over the network, for example on the same Wi-Fi or at a public address that accepts SSH connections. ScarfGo itself does not provide any network or VPN service.

About

hYYa ink

This app transforms raw text files and documents into easily readable formats. It allows for in-document editing, PDF manipulation, format conversion, and AI-powered assistance, all while prioritizing user privacy and offline functionality.

Highlights
  • Read Markdown, JSON, YAML, CSV, diagrams, and more
  • Edit text files and tables directly
  • Sign, mark up, and redact PDFs
  • Convert between various document formats
  • AI-powered document explanation and summarization
  • Offline document viewing and editing
Features
Read full description

Stop reading syntax. Start reading documents. A .md file. A JSON export. A notebook, a diagram, a contract to sign. hYYa ink opens them as clean, readable documents instead of walls of raw text, on your Mac, iPhone, iPad and Apple Vision Pro. Reading is free, forever. READ WHAT YOU'RE SENT • Markdown — clean headings, lists, tables and links • JSON, YAML and TOML — tidy trees you can fold and explore • CSV and TSV — a real table, not a wall of commas • Mermaid and Graphviz — diagrams drawn instantly, offline • LaTeX — math that looks right • Jupyter notebooks — cells, code and text outputs, easy to read • AsciiDoc, Org-mode, XML, diffs and logs — readable at last FIX IT WHERE YOU SEE IT Change a JSON value or a table cell right on the page, and only that changes. Sort, filter and find & replace in any table. Write Markdown with a simple toolbar. Edit any text file and see it as a clean document. SIGN, MARK UP AND REDACT PDFS Tap the spot and type. Draw your signature, then place, resize and rotate it. It's a visual signature, not a certified one. Add stamps such as Approved or today's date. Highlight, underline or mark up by hand. Need something gone? Redact removes the selected text from the page. Erase does the same and leaves clean white space. Either way you get a new file, and your original stays as it was. Find any word in a PDF, browse by page or contents, and open password-protected files. Make a scan searchable, right on your device. Reorganize, split, compress, protect or watermark, and each one saves a new file. Compare two PDFs to see which pages differ. TURN ONE FORMAT INTO ANOTHER Save JSON, YAML, TOML and XML as one another, tables as CSV or TSV, notebooks and Org files as Markdown, Markdown and AsciiDoc as web pages, and diagrams as SVG or PNG. If something can't carry over exactly, hYYa ink tells you first. ASK AI, WITH YOUR OWN KEY Explain, summarize or translate a document, PDFs included. Fix errors, reformat, or turn an idea into a diagram. Connect OpenRouter, Groq, Together AI or a compatible service. Your key stays on your device. Only the open document's text is sent, and only when you run an AI action. Every AI result says it was written by AI. PRIVATE BY DESIGN. BEAUTIFUL BY DESIGN. No account. No tracking. No data collection. Documents open on your device without an internet connection, and they stay there unless you choose to send them. FREE TO READ, PRO TO DO MORE Reading every format is free forever, and so are saving as a PDF, printing, and searching or browsing a PDF. Try everything free for 7 days. You are not charged. After that, a one-time purchase unlocks editing, PDF tools, saving in other formats and AI on Mac, iPhone, iPad and Apple Vision Pro. From hYYa — more than apps. Companions you can trust.

Screenshots

ScarfGo4 screens
hYYa ink4 screens

Verdict

The call

The clearest difference is rating: hYYa ink at 5.0 against ScarfGo's 1.0. hYYa ink also leads on device support (4 vs 1). ScarfGo's advantage is in-app purchases (none vs 2). On price, ratings volume, ads and iOS requirement 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. hYYa ink sells 2 one-off in-app purchases. ScarfGo asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

hYYa ink holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Scorecard4 real differences · 5 level
ScarfGo versus hYYa ink: the parameters behind the verdict, then further details
ParameterScarfGohYYa ink
PriceFreeFree
Rating1.0 (1 ratings)5.0 (1 ratings) — better
Number of ratings11
Update frequency—Every 2 days
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPhoneiPhone, iPad, Mac, Vision Pro — better
Requires iOS18.617.0 — better
Further details — not scored
Size17 MB18 MB
Age rating4+4+
DeveloperAlan WizemannHassaan Abdeen

In-app purchases

None

ScarfGo

No in-app purchases

2 purchases

hYYa ink

One-time2
  • 7-day TrialFree
  • hYYa ink Pro$19.99

Questions

Is ScarfGo free?
ScarfGo is free to download, with no in-app purchases.
Is hYYa ink free?
hYYa ink is free to download, with in-app purchases available.
Which has better reviews, ScarfGo or hYYa ink?
hYYa ink is rated higher. ScarfGo averages 1.0 out of 5 from 1 ratings, while hYYa ink averages 5.0 from 1 ratings.
Do ScarfGo or hYYa ink have ads?
Neither ScarfGo nor hYYa ink shows ads.

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