Clastly vs Blue Hour
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Clastly
Organize anything with custom collections and powerful field types. Track reading lists, travel memories, subscriptions, and more. Your data syncs securely via iCloud with a clean, native iOS interface.
- Customizable collections
- Multiple field types
- Pre-built templates
- Data filtering
- iCloud sync
- Ad-free experience
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Clastly is a personal database for collecting, organizing, and looking back on everything you love. Books, gadgets, travel memories, fandom, subscriptions—turn anything worth keeping into a collection shaped around you. Start quickly with templates: • Collection Catalog - Track purchase dates, condition, storage locations, and photos • Travel Log - Save places from maps or your current location • Fandom - Record concerts, merch, and favorite moments • Subscription Manager - Manage renewal dates, costs, and active services • Reading List - Organize covers, reading status, reviews, and reference URLs • Pet Diary - Capture daily moments, photos, and notes about your pets • Sauna & Spa - Record temperatures, facilities, and relaxation levels • Cafe Log - Log latte art, beans, and shop atmosphere • Movie Watchlist - Save memorable quotes, directors, and personal ratings Or start with Blank and create a structure of your own. Add fields that fit what you collect: • Text • Number • Date • Checkbox • Single Select • Multi Select • URL • Place • File • Created Time • Last Edited Time • Formula (Clastly Pro) • Relation (Clastly Pro) • Rollup (Clastly Pro) Customize your views: • List - Scan details quickly • Table - Compare and edit details in columns • Gallery - Browse records with photos • Masonry - Make the most of photos in different sizes • Board - Organize by status or category • Calendar - See dated records by month, week or day • Map - See saved places on a map Group, sort, and filter using your fields. Search within a collection or across collections, find records in Spotlight, and choose which details appear in each row. Group text by first letter, numbers by range, and dates by day, week, month, or year, and hide empty groups. Set end dates to record a period, and display numbers as currency, percentages or with a unit. You can also set a notification for a date and time you specify. Choose a notification or an urgent reminder that sounds an alarm (iOS or iPadOS 26 or later). One view per collection, all layouts, grouping, sorting and filtering remain free. Import and export data: You can also import CSV and TSV files to create collections. Collections created in Clastly can be exported as CSV. Back up all your data together and restore it when you need it. Capture from anywhere: Save photos, web pages, text, files, and Apple Maps places to Clastly from the share sheet. Home Screen widgets show a calendar, recent records, and collection counts, while widgets, the Lock Screen, and Control Center give you quick ways to add a new record. Clastly also works with Siri and Shortcuts. Automate opening collections, adding and editing records, updating fields, and searching your data. Private and synced: No ads. No social features. Your collections sync between iPhone and iPad with iCloud. With Clastly Pro (subscription), save multiple named views for each collection and switch between them. Search text in photos, scans and PDFs. Use formulas to calculate costs and dates, combine text, or show results based on conditions. View totals and averages for each group. Link records across collections with relations, and use rollups to total, average, or count values from linked records. Not for likes, but for yourself. Build a library just to collect and enjoy looking back at your treasures. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.clastly.com/privacy/
Blue Hour
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Blue Hour turns time into light: a sun sinks toward the horizon as your timer runs, so you can feel how much is left without reading a number. Built kindly for ADHD and time-blindness, calm enough for classrooms and kids. No account, no ads, no streaks. Free forever, with a tip jar in Settings. RAISE THE SUN Drag the sun up to set your time, one minute to three hours, with soft detents you can feel. Prefer numbers? Tap the readout for a keypad. Three preset chips keep your rituals one tap away. THE SETTLING DUSK As the last light falls, the sky deepens and the screen dims a few gentle stops. At zero: two slow breaths of glow, a soft haptic, and an optional two-note chime. No alarm slam. Ever. THE LIGHT FOLLOWS YOU A Live Activity keeps the sinking sun on your Lock Screen and in the Dynamic Island. An optional nudge can tell you when time is up, even if you have looked away. Off by default. CYCLES, GENTLY Pomodoro in Blue Hour's language: work while the sun sets, then the break is a sunrise. The sky returns to morning, and the next round starts when you do. Rounds are counted in little suns, never quotas. START FROM ANYWHERE A Home Screen widget starts your usual timer in one tap. Siri and Shortcuts can start, pause, and resume without opening the app. FOR CLASSROOMS One tap opens the big display: a wall-sized countdown calm enough for a whole room, with a classroom preset set from one to twenty minutes. A QUIET LINE EACH DAWN Every day the idle sky carries one line from 412 public-domain quotations. Seneca, Thoreau, Lao Tzu, old proverbs. One per day. No feed, no push, no hustle. CALM BY CONSTRUCTION • Optional halfway and final-minute cues • Keeps the screen awake while the light falls, if you want • Wall-clock accurate: background it, come back, the light agrees • VoiceOver, Reduced Motion, and Dynamic Type are first-class FREE FOREVER Every feature, free. No premium tier, no subscription. If Blue Hour earns a place on your Home Screen, there is a tip jar in Settings. It unlocks nothing. PRIVATE BY ARCHITECTURE No account. No analytics. No tracking. Blue Hour makes zero network calls, and its App Store privacy label is "Data Not Collected," the rare kind that means exactly what it says. The light keeps track for you.
Screenshots
Verdict
The clearest difference is iOS requirement: Clastly at 18.6 against Blue Hour's 26.0. On price, ads, in-app purchases and device support 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. Clastly sells 2 in-app purchases, starting at $2.99 per month and Blue Hour sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
| Parameter | Clastly | Blue Hour |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (5 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 5 — better | — |
| Update frequency | Fortnightly | — |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.6 — better | 26.0 |
| Further details — not scored | ||
| Size | 38 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Soji Takahashi | Moses Smith |
In-app purchases
Clastly
- Pro Plan (Monthly)7 Days trial$2.991 Month
- Pro Plan (Yearly)7 Days trial$19.991 Year
Blue Hour
- Coffee$1.99
- Lunch$4.99
- Legend$9.99









