GrainBook vs SnapMark
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GrainBook
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Turn every video, podcast, newsletter, and article you follow into a searchable AI knowledge feed. GrainBook brings your subscriptions together, summarizes new content, and lets you ask questions grounded in the sources you trust. Spend less time scrolling and keep more of what matters. Join 3,000+ active readers who use GrainBook to learn from the internet without drowning in it. ONE FEED FOR EVERYTHING YOU FOLLOW • Follow or save content from YouTube, podcasts, Bilibili, X/Twitter, Reddit, RSS, newsletters, ebooks, and web pages • See new releases in one calm, personalized feed • Discover creators worth following across topics you care about AI SUMMARIES THAT SAVE TIME • Turn long videos, podcast episodes, and articles into clear summaries • Choose the depth you need—from a quick take to a deeper read or transcript • Start your day with a digest of unread updates from yesterday ASK YOUR KNOWLEDGE • Ask questions across your subscriptions, notes, collections, and saved content • Use @ to focus GrainBook AI on a creator, source, collection, note, or individual item • Get answers grounded in your content, with citations that open the original source • Ask AI while reading, then continue the conversation in Chat SAVE WHAT MATTERS • Save important insights and organize them with collections and tags • Search your library and revisit your reading history • Keep every original source one tap away HOW IT WORKS 1. Subscribe to a source or save a link 2. GrainBook fetches, transcribes, and summarizes new content 3. Read the essentials, ask follow-up questions, and save what matters Start free and turn information overload into a knowledge habit. GrainBook offers optional auto-renewing subscriptions. Payment is charged to your Apple Account at confirmation. Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period. Manage or cancel anytime in your App Store account settings. Terms: https://grainbook.app/terms Privacy: https://grainbook.app/privacy
SnapMark
Capture fleeting thoughts and organize them into actionable tasks with colorful sticky notes. Manage ideas, to-dos, and lists with flexible views and timely reminders. Archive completed notes to keep your workspace clear.
- Colorful sticky notes
- Ideas and todos in one note
- Sticky or conversation view
- System calendar reminders
- Schedule page overview
- Checklist templates
- Archive notes
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SnapMark turns your fleeting thoughts into colorful sticky notes you can actually act on. Whether it's an idea you don't want to lose, a task you need to get done, or a list you're about to start — drop it into a card and SnapMark keeps it organized until the moment you need it. • Colorful sticky notes Eight hand-picked Morandi colors keep your board calm but never boring. Pin the important ones, drag to reorder, and finish on your own pace. • Ideas and todos in one note Every card is a mini workspace. Jot a raw thought, turn it into a checkable todo, set a priority, group items by topic — all inside one sticky note. • Sticky view or conversation view Switch any note between a classic sticky layout and a chat-style conversation. The chat view is perfect for notes where ideas evolve one message at a time — meeting notes, brainstorms, back-and-forth planning. • Reminders that show up on time Pin a note to a date and time. Choose to get an in-app notification, or mirror it to your system Calendar so it shows up everywhere you already look. • Schedule page See today, tomorrow, and the rest of the month at a glance. Month and week layouts, dots on the days that have reminders, and a focused list of what still needs your attention. • Checklist templates Start a new trip list, project checklist or weekly routine from a built-in template instead of a blank page. • Archive, not delete Finished notes move out of the way into the archive. They're still there when you need them, and you can always restore or permanently delete. • Make it yours Light or dark mode, six color palettes, plus a language that follows your system — from Simplified Chinese to Korean to Arabic. SnapMark Pro (optional) • Cross-device sync over iCloud or WebDAV • Automatic backups on a schedule you choose • Auto-export with a custom folder and retention rules Choose a monthly or yearly subscription, or unlock everything with a one-time lifetime purchase. Built for people who think in bursts. Record fast, organize later, never lose a good thought. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://rgcode.top/snapmark/privacy-policy.html Support: https://rgcode.top/snapmark/support.html
Screenshots
Verdict
GrainBook and SnapMark are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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. GrainBook sells 2 in-app purchases, starting at $4.99 per month and SnapMark sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.
GrainBook ships an update every 2 weeks, SnapMark weekly. The most recent releases landed on October 12, 2026 and October 28, 2026 respectively.
| Parameter | GrainBook | SnapMark |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (4 ratings) — better |
| Positive reviews | — | 95.7% of reviews |
| Number of ratings | — | 4 — better |
| Update frequency | Every 2 weeks | Weekly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | — | Freemium |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.4 | 15.0 — better |
| Further details — not scored | ||
| Size | 155 MB | 84 MB |
| Age rating | 17+ | 4+ |
| Developer | Yuan Long | 思雯 陆 |
In-app purchases
GrainBook
- Grainbook Go (1-Month)14 Days trial$4.991 Month
- Grainbook Go (12-Months)14 Days trial$44.991 Year
SnapMark
- SnapMark Pro Monthly14 Days trial$0.991 Month
- SnapMark Pro Yearly$9.991 Year
- SnapMark Pro Lifetime$17.99









