Silver Diner vs Astral Book
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Silver Diner
Easily earn rewards and manage your loyalty account without a physical card. Order food for delivery or carryout, track your points, and stay updated on special offers and new menu items. Find nearby locations and get directions.
- Earn rewards points
- Order for delivery
- Order for carryout
- View account balance
- Receive notifications
- Find nearest locations
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Silver Diner fans can earn rewards at Silver Diner without carrying your Eat Well Do Well card. Features include: - Order for delivery and carryout - Earn points towards rewards on each visit and online order - View your account balance and available rewards - Receive notifications about monthly offers, earned rewards and new menu items - Find the nearest location, view store hours, and get directions It’s easy and free to sign-up: - Already a have a card? Register your existing Eat Well, Do Well card number into the app - Not a member? Click “Get the App” to register a new mobile account
Astral Book
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The easiest way to log your stargazing sessions. Astral Book is an astronomy observation journal for amateur astronomers. After each session at the eyepiece, record your targets, seeing, transparency, equipment, and photos — all in one place. No internet needed, even at remote dark sky sites. 【What You Can Do】 ▷ Observation Log Record object name, object type (planet, moon, star, nebula, cluster, comet, meteor & more), date/time, location, seeing (1–5), transparency (1–5), notes, and photos. Search and filter past sessions by object, notes, date, location, or equipment. ▷ Calendar View See which nights you observed on a monthly calendar. Swipe to browse months and revisit your history at a glance. ▷ Target List Add objects you want to observe. Log a session for any target and it's automatically marked as done and removed from the list. ▷ Messier Catalog Browse all 110 Messier objects. Observed objects are automatically checked off so you can track your Messier completion progress. ▷ Same Object History From any log entry, quickly see every time you've observed the same object — when, where, and under what conditions. ▷ Observation Sites Save your favorite dark-sky sites with Bortle scale ratings. ▷ Night Mode Switch to a red-tinted theme that protects dark adaptation while you're at the eyepiece. ▷ Observation Card Sharing Generate a visual observation card and share it via social media or messaging. ▷ CSV / ZIP Export & Import (Free) Export observations as CSV. Create a ZIP backup with photos, sites, equipment, and wish list. Restore from a previously exported CSV or ZIP. ▷ PDF Export (Free) Export your observation journal as a PDF report to share or print. ▷ Equipment Management (Pro) Register your telescopes, eyepieces, and cameras, then link them to your logs. One place to see what you used to observe what. ▷ Saved Gear Sets (Pro) Save favorite telescope + eyepiece + camera combos as templates so logging a session takes one tap. ▷ Observation Statistics Charts for total sessions, unique object types, monthly session counts, and sessions by site — see your observing patterns over time. 【Who It's For】 ・Observers tired of notebooks or notes apps with no search or statistics ・Visual observers who want to properly track seeing and transparency ・Observers who want to review results by telescope or binoculars ・Messier catalog chasers tracking their progress ・Anyone keeping a "next target" wish list ・Astronomy club members sharing observation reports ・Observers at multiple sites from backyard patio to remote dark sky 【Your Data Stays With You】 All data is stored locally on your iPhone/iPad. Nothing is sent to the cloud or any external server. No account required. No risk of losing years of records if a service shuts down. Use ZIP backup to move data when changing devices. 【Fully Offline】 Works completely without internet at remote dark-sky sites. No connection required (except during in-app purchase processing). 【Pricing】 ・Free: up to 20 observation logs (includes CSV / ZIP / PDF export & import) ・Astral Book Pro (one-time purchase): regional pricing — unlimited logs + equipment management + gear sets One purchase. No subscription. No recurring fees. ——— Developer: Kore Apps Support: support@kore-apps.com ———
Screenshots
Verdict
The clearest difference is in-app purchases: Silver Diner at none against Astral Book's 1. Astral Book's advantage is ads (none vs shown) and update cadence (weekly vs every 10 months). On price, device support 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
Both are free to download. Astral Book sells 1 one-off in-app purchase. Silver Diner asks for nothing beyond the download.
Silver Diner ships an update every 10 months, Astral Book weekly. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.
| Parameter | Silver Diner | Astral Book |
|---|---|---|
| Price | Free | Free |
| Rating | 2.8 (101 ratings) — better | — |
| Positive reviews | 22.1% of reviews | — |
| Number of ratings | 101 — better | — |
| Update frequency | Every 10 months | Weekly — better |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 158 MB | 55 MB |
| Age rating | 4+ | 4+ |
| Developer | Paytronix Systems Inc | kazuki korenori |
In-app purchases
Silver Diner
No in-app purchases
Astral Book
- Astral Book Pro$5.99









