Caliu vs Hush
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Caliu
A minimalist markdown notes app designed for writers, offering a distraction-free writing experience with features like nested tags, reminders, and cross-device syncing. It allows for easy export and integration with external tools.
- Markdown writing with live formatting
- Nested and colored tags for organization
- Cross-device sync across iPhone, iPad, and Mac
- Reminders for notes
- Export to various formats (Markdown, ePub, RTF)
- REST API and MCP server for integration
- Customizable themes
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Caliu is a quiet place to write. Open it and start typing: no account, no setup, no clutter. Markdown takes shape as you type, everything works offline, and your notes stay on your device. When you want them everywhere, create a free account and they follow you across iPhone, iPad, Mac and the web. Sync is free, and it stays free. Writing comes first Headings, lists, tasks, quotes, code and links format as you write. There is no preview pane and no mode to switch: what you see is your note. The interface steps aside and leaves you with the page. Organised the way you think Tags instead of folders, because one idea can belong in many places. Nest them, colour them, and find any note in seconds. Link notes to each other and follow a thought from one to the next. Pin what matters now, and archive what you are done with without losing a word. There when you need it Native on iPhone, iPad and Mac, with a web app for everything else. Save things to Caliu straight from the share sheet, or add a thought from your Apple Watch. Yours, and only yours No ads. No tracking. Nothing you write is used to train AI. Your notes live on your device first and sync encrypted, and Caliu is built in the EU under GDPR. Export any note as Markdown or plain text whenever you like, share one as a public link when someone needs to read it, and delete your account at any time. Deleted means deleted. For tinkerers A full REST API and a built-in MCP server, so Claude, Cursor or your own scripts can read and write your notes, on your terms. Your first API key is free. Caliu Pro Writing, tags, sync and working offline are free. 50 notes free, forever, no account needed. Caliu Pro makes them unlimited and adds: • Version history: scroll back through any note and restore it in a tap • Every theme, font and app icon: 22 colour themes, each in light and dark, and 30 fonts • Drawing, right inside your notes • Unlimited attachments • More export formats: HTML, ePub, PDF, RTF and TextPack • Unlimited API keys, and connecting AI apps like Claude to your notes Subscribe monthly or yearly, or buy Pro lifetime once. Try it free before you decide. The monthly or yearly plan is an auto-renewing subscription: it renews unless you cancel at least 24 hours before the end of the current period, and you can manage or cancel it anytime in your App Store account settings. Made with care by a small, independent team of one. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://caliuapp.com/privacy
Hush
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Hush is a focus sounds app that lets you build layered soundscapes from real-time noise generators, brainwave entrainment, and 80+ ambient sound samples. MIX UP TO 6 SOUNDS AT ONCE Combine noise generators, binaural beats, and ambient recordings into a single layered mix. Each source has its own volume control so you can dial in exactly the right balance. NOISE GENERATORS White, pink, brown, and gray noise synthesized in real time — not loops, so every second sounds natural. BRAINWAVE ENTRAINMENT Binaural beats (Alpha, SMR, Beta, Gamma), isochronic tones, and monaural beats to support focus, relaxation, and deep work. Adjustable carrier frequency. 80+ AMBIENT SOUNDS Rain on a tent, cat purring, coffee shop chatter, vinyl crackle, crackling fire, underwater, train rides, and dozens more — organized across 12 categories. BUILT-IN & CUSTOM PRESETS Start with curated presets like Deep Work, Coffee Shop, Storm, or Cozy — or save your own. A Random Mix button generates fresh combinations when you want something new. FOCUS TIMER Set a countdown from 1 to 180 minutes. Sounds fade out gently in the final seconds, with an optional chime when time is up. WORKS IN THE BACKGROUND Control playback from your Lock Screen and Control Center. Your last session is automatically restored when you reopen the app. PRIVATE BY DESIGN No account required. No ads. No tracking. No data collection.
Screenshots
Verdict
The clearest difference is in-app purchases: Hush at none against Caliu's 2. Hush also leads on iOS requirement (18.0 vs 26.0). Caliu's advantage is update cadence (every 9 days vs every 6 weeks) and device support (4 vs 2). On price 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. Caliu sells 2 in-app purchases, starting at $1.99 per month. Hush asks for nothing beyond the download.
Caliu ships an update every 9 days, Hush every 6 weeks. The most recent releases landed on October 16, 2026 and October 6, 2026 respectively.
| Parameter | Caliu | Hush |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (5 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 5 — better | — |
| Update frequency | Every 9 days — better | Every 6 weeks |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free | — |
| Devices | iPhone, iPad, Mac, Apple Watch — better | iPhone, iPad |
| Requires iOS | 26.0 | 18.0 — better |
| Further details — not scored | ||
| Size | 210 MB | 127 MB |
| Age rating | 4+ | 4+ |
| Developer | Marc Torrelles | Jaafar Abdeen |
In-app purchases
Caliu
- Caliu Pro - Monthly3 Days trial$1.991 Month
- Caliu Pro - Yearly7 Days trial$17.991 Year
Hush
No in-app purchases







