Comparison

AstroEdit vs Zenith Annotation

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

AstroEdit

Effortlessly enhance your astrophotography with advanced AI tools. Remove noise, stars, and gradients to reveal stunning cosmic details. Includes essential editing controls for professional-quality results on your iPhone.

Highlights
  • AI Noise Reduction
  • AI Star Removal
  • AI Gradient Removal
  • AI Satellite Trail Removal
  • Oval Star Correction
  • Easy Image Controls
  • Curves Adjustment
  • Wavelet Sharpening
Features
Read full description

Capture the Cosmos with Ease! Transform your astrophotography with our game-changing app—the only app that harnesses advanced AI tools to deliver stunning results effortlessly! Edit your night sky images in a flash before sharing them on social media. Unlock the Universe with Cutting-Edge AI Features: Noise Reduction: Our state-of-the-art AI effortlessly eliminates noise, ensuring crystal-clear images. Star Removal: Remove stars with precision using advanced AI, allowing you to focus on the beauty of nebulas and galaxies without distractions. Gradient Removal: Say goodbye to distracting sky gradients and enhance your photos like never before. Satellite Trail Removal: Trained on real images, our AI tool removes streaks created by satellites or aircraft. Oval Star: Make oval star round found in Seestar S30. Plus All the Essential Image Processing Tools: Easy Controls: Adjust exposure, brightness, saturation, temperature, and tint with simple sliders. Curves Adjustment: Fine-tune your images with five layers of precise control. Wavelet Sharpening: Bring out intricate details while preserving the natural look of your photos! Hubble Palette Color: Enable new color perspective. Why Choose AstroEdit? This isn’t just another editing tool—it’s a revolutionary experience designed specifically for astrophotographers using Seestar, Dwarf, and other telescopes with iPhone apps. Whether you’re capturing deep-sky objects or terrestrial scenes, our app delivers professional-quality edits right on your iPhone. Key Features: Exclusive to iOS: Experience capabilities unmatched by any other app on the market. Supports TIFF & JPEG: Open and save high-quality images in both formats. Optimized Performance: Designed for seamless use at 1920x1080 resolution for device less than 4GB RAM, otherwise at 2160x3840(4K), with automatic resizing for large files. Get Started Today! Transform your night sky captures into breathtaking masterpieces. Check out our demo video https://youtube.com/shorts/11nECmjHdC0 and discover how fun and magical astrophotography can be! For support, contact us at help@AstroEditApp.com. Don’t just take photos—create cosmic art with our unique AI-powered app! Education: If you are a student belong to an Astronomy society, you can write in (ustransit74@gmail.com) to request up to 10 promotion code. Each promotion code enables an installation of the app on a device. For others, you can write in too to request based on individual case. Basic app tutorial video at https://www.instagram.com/ycbsl/ Requirement: The AI tools require at least 4G RAM for best image. If the device has less than 4GB RAM memory, lesser weight(memory) will be used for the specific AI starless, AI oval and AI satellite, and it will produce degraded results with maximum image size of 1080x1920. This is to prevent crashes due to run out of memory. You can check your device RAM by going to this app Help section. Privacy policy and term of use (EULA) is at https://deepskycolor.blogspot.com/2018/12/privacy-policy-for-deep-sky-color-app.html New Feature: AstroEdit uses AI to automate the complex comet stacking. Currently, user needs to stack first for the stars and second for the comet since they moves at different speeds. Then he has to blend them together and do further edition on another program on a laptop. AstroEdit makes comet stacking quick and simple. Subscription is optional: With one time purchase, users can access all features in AstroEdit. Users can subscribe monthly and we'll keep improving AstroEdit.

About

Zenith Annotation

Read full description

Study and present your astronomical images on iPhone and iPad. Zenith Annotation brings image import, astrometry, annotations, and presentation tools together in a guided workflow. Explore the field • Open the images you choose from Photos or Files, including TIFF and TIF images. • Solve a field online when you request it and agree to send a working copy. • Browse catalogs and review object and session details. Prepare your annotations • Organize layers, labels, data, and visual styles. • Keep project progress on your device. • Preserve the original file: online solving uses a reduced grayscale copy, not the original. Present your work • Design carousels with editable text, charts, palettes, and animations. • Arrange images and text in collages. • Export a result to save or share yourself. Online solving requires a connection and your explicit action. For this feature, the app sends Astrometry.net a reduced grayscale copy of up to 2048 pixels without EXIF metadata. Zenith Annotation does not transmit the original file or publish your images to social networks. Annotation Studio Choose how to start: try 14 days free if your Apple account is eligible, or pay for the year up front. The plan automatically renews after the trial at the price shown by your App Store; in Mexico, that price is MXN $549 per year. Direct payment charges the displayed annual price at the start. Manage or cancel renewal in your Apple account settings. Purchase restoration is included. Terms of Use (Apple Standard EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

AstroEdit4 screens
Zenith Annotation3 screens

Verdict

The call

The clearest difference is price: Zenith Annotation at Free against AstroEdit's $2.99. Zenith Annotation also leads on update cadence (daily vs every 6 days) and iOS requirement (15.0 vs 17.0). AstroEdit's advantage is chart position (#104 vs unranked). On 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

CostPrice · In-app purchases · Ads · Monetization

Zenith Annotation is free to download; AstroEdit costs $2.99 up front. AstroEdit sells 4 in-app purchases, starting at $0.99 per month and Zenith Annotation sells 2 in-app purchases, starting at $24.99 per year. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

AstroEdit ships an update every 6 days, Zenith Annotation daily. The most recent releases landed on October 14, 2026 and October 6, 2026 respectively.

Scorecard4 real differences · 7 level
AstroEdit versus Zenith Annotation: the parameters behind the verdict, then further details
ParameterAstroEditZenith Annotation
Price$2.99Free — better
Rating3.9 (17 ratings) — better—
Positive reviews61.7% of reviews—
Number of ratings17 — better—
Update frequencyEvery 6 daysDaily — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
Best chart rank#104 — better—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.015.0 — better
Further details — not scored
Size153 MB47 MB
Age rating4+4+
Developeryong chong lohEduardo Martinez Gomez

In-app purchases

4 purchases

AstroEdit

Subscriptions3
  • Back AI Training$0.991 Month
  • Back New Features.$1.991 Month
  • Back App Longevity$2.991 Month
One-time1
  • Activate AI featuresFree
2 purchases

Zenith Annotation

Subscriptions2
  • Annotation Studio with Trial14 Days trial$24.991 Year
  • Annotation Studio Annual$24.991 Year

Questions

Is AstroEdit free?
AstroEdit costs $2.99, and also offers in-app purchases.
Is Zenith Annotation free?
Zenith Annotation is free to download, with in-app purchases available.
Do AstroEdit or Zenith Annotation have ads?
Neither AstroEdit nor Zenith Annotation shows ads.
Which is updated more often, AstroEdit or Zenith Annotation?
AstroEdit ships an update every 6 days, and Zenith Annotation daily. Most recently, AstroEdit was updated on October 14, 2026 and Zenith Annotation on October 6, 2026.

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