AI CometStack vs ScopeLog
Price, ratings, monetisation and update history for both apps, side by side ā with what reviewers say about each.
AI CometStack
Read full descriptionHide full description
AI CometStack is a breakthrough comet alignment app designed specifically for mobile astrophotography workflows. Overcome the long-standing tradeoff of comet movement during long imaging sessions. Traditionally, you had to choose between sharp stars (streaked comet) or a sharp comet (trailed stars). AI CometStack solves this by eliminating complex desktop compositing and advanced scripting. Core Features Motion-Aware Stacking: Aligns the comet nucleus across time while preserving star geometry. Two-Path Automation: Integrates stars and comets separately, then blends them on-device. Batch Processing: Handles full-night capture sets with uniform parameters. Pro Format Support: Works natively with FITS, RAW, TIFF, PNG, and JPEG files. Mobile-First Flow: Real-time previews and guided steps built for iOS deep-sky sessions. Simple Workflow Import your exposure frames (or use the included sample files). Let the app automatically track and model comet motion. Validate and adjust the seamless background blend in real time. Export gallery-grade, press-ready images instantly from the field. Support & Feedback Questions, feedback, or need help? Contact us directly at ustransit74@gmail.com Privacy policy and term of use (EULA) is at https://deepskycolor.blogspot.com/2018/12/privacy-policy-for-deep-sky-color-app.html
ScopeLog
Read full descriptionHide full description
Is tonight worth setting up the rig? ScopeLog gives you one clear answer. Unlike the fragmented tools astrophotographers juggle, ScopeLog blends cloud cover (Apple Weather), the Moon (altitude, phase and separation from your target), target altitude and light pollution into a single Imaging Go/No-Go verdict ā plus the optimal imaging window for the night. FEATURES ⢠Tonight's Go/No-Go verdict with the best window and clear reasons ⢠Deep-sky catalog (Messier + bright NGC/IC) with nightly altitude curves ⢠Observing sites on a map, with automatic or manual Bortle ⢠Session logbook with stats and shareable cards ⢠Gear & maintenance reminders (collimation, polar alignment, sensor cleaning) ⢠Live Activity: session timer, target altitude, meridian-flip countdown ⢠Red Night Vision mode to protect your dark adaptation ⢠Private by design ā data syncs through your own iCloud; nothing is collected PRO Multiple sites, unlimited targets and lists, statistics & Share cards, maintenance reminders and session Live Activities. Monthly, yearly (with a free trial) or a one-time lifetime unlock. Built Apple-first for iPhone. Clear skies! Weather by Apple Weather. Deep-sky data: OpenNGC (CC BY-SA). Try Pro free for 7 days. Cancel anytime. SUBSCRIPTION TERMS Pro is available as an auto-renewable subscription (monthly or annual). Length and price are shown in the app prior to purchase. Payment is charged to your Apple ID upon confirmation. The subscription renews automatically at the same price unless cancelled at least 24 hours before the end of the current period. Renewal is charged within 24 hours prior to the end of the current period. You can manage and cancel your subscription in your Apple ID account settings after purchase. Any unused portion of a free trial period is forfeited when purchasing a subscription. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
AI CometStack and ScopeLog are too close to call on the numbers: across 5 compared parameters ā price, ads, in-app purchases and device support 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. AI CometStack sells 1 in-app purchase, starting at $9.99 per year and ScopeLog sells 3 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.
| Parameter | AI CometStack | ScopeLog |
|---|---|---|
| Price | Free | Free |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad ā better | iPhone |
| Requires iOS | 17.0 | 17.0 |
| Further details ā not scored | ||
| Size | 105 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | yong chong loh | Giulio Fontana |
In-app purchases
AI CometStack
- Yearly Subscription$9.991 Year
ScopeLog
- PRO Monthly Plan7 Days trial$3.991 Month
- Pro Yearly$24.991 Year
- Pro Lifetime$44.99
Questions
Is AI CometStack free?
Is ScopeLog free?
Do AI CometStack or ScopeLog have ads?
Other comparisons















