Simple Viewer vs Zelmux
Price, ratings, monetisation and update history for both apps, side by side ā with what reviewers say about each.
Simple Viewer
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Simple Viewer opens files. Quietly, quickly, and without asking for anything in return. Share any file from any app ā Mail, Messages, Files, a browser, a cloud drive ā and Simple Viewer renders it the way it was meant to be read. No account. No upload. Files stay on your device. It is designed for the moment when you just need to see what's inside a file. RENDERED WITH CARE ⢠PDF with smooth scrolling and pinch-to-zoom ⢠Markdown with typography that reads ⢠Source code with precise syntax highlighting ⢠JSON, XML, and YAML, pretty-printed ⢠CSV and TSV, as readable tables ⢠Excel spreadsheets (XLSX) ⢠Word documents (DOCX) ⢠ZIP archives, browsed inside ⢠Plain text, logs, and scripts ⢠x509 certificates BUILT FOR iPHONE AND iPAD ⢠Open from any app via the iOS share sheet ⢠Recent files, one tap away ⢠Orientation-aware on iPad ⢠Works offline. Always. NOTHING YOU DON'T NEED No sign-up. No subscription. No ads. No tracking. No cloud sync. No bloat. Just a clean surface for reading what you already have. Because simple is elegant.
Zelmux
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Zelmux is a mobile client for Zellij,Tmux and SSH. It's optimized for Claude and Codex cli. Connect to a Zellij server running on your Mac or Linux box and attach to live sessions from your iPhone. Built for developers who run long-lived agent workflows ā Claude Code, Codex, build watchers, log tails ā and want to check in, steer, or paste prompts without opening a laptop. KEY FEATURES ⢠Attach to your Zellij sessions over HTTPS and WebSocket ⢠Secure self-signed TLS support with certificate pinning ⢠Fast ANSI terminal rendering powered by SwiftTerm ⢠Prompt composer with Send, Paste, and Stage modes ⢠Bracketed-paste support for safer multi-line prompts ⢠Saved snippets for repeat commands ⢠Touch modes for scrolling, selection, and terminal mouse input ⢠Pinch to zoom terminal font size ⢠Focus mode for full-screen terminal viewing ⢠Local-first design with no cloud account, telemetry, or third-party tracking
Screenshots
Verdict
Simple Viewer and Zelmux are too close to call on the numbers: across 6 compared parameters ā price, update cadence, ads and in-app purchases among them ā neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Simple Viewer ships an update monthly, Zelmux every 3 weeks. The most recent releases landed on October 3, 2026 and October 8, 2026 respectively.
| Parameter | Simple Viewer | Zelmux |
|---|---|---|
| Price | Free | Free |
| Update frequency | Monthly | Every 3 weeks ā better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.0 | 16.0 ā better |
| Further details ā not scored | ||
| Size | 6 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | STLink | Yang Zhang |
In-app purchases
Simple Viewer
No in-app purchases
Zelmux
No in-app purchases







