Comparison

MySkyPics 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

MySkyPics

Organize and share your astronomy photos and observations. Catalog thousands of celestial objects, add custom tags, and record sightings without photos. Access Wikipedia and NASA articles for more information.

Highlights
  • Smart telescope photo album
  • Record observations without photos
  • Catalog thousands of sky objects
  • Custom tagging for photos and sightings
  • Link to Wikipedia and NASA articles
  • Search and browse celestial objects
Features
Read full description

MySkyPics organizes astronomy experiences and makes them easy to share with others. • Add smart telescope photos into a sky object focused photo album. • Add observations without a photo as a Sighting. ASTRO PHOTO GALLERY Start by picking an object in the app and add its photo from your Camera Roll. MySkyPics is designed to hold photos of thousands of sky objects — sun, moon, solar eclipse, lunar eclipse, planets & moons, comets, meteor showers, asteroids, dwarf planets, stars, star clusters, galaxies, and nebulae - including all Messier and Caldwell objects. It even has a special place for photos of objects not included in the app, labeled ‘My Objects’. As a photo is added for a sky object, it is instantly tagged with that object’s tags. Any custom tag(s) you’ve created can also be attached. Expand your record with optional place and notes. Objects added to the album can be quickly found with Search and browsed with a swipe. SIGHTINGS RECORD Sightings makes MySkyPics a reference resource of your astronomy experiences. Because not all astronomy viewing can be recorded in a photograph, Sightings is a special option for recording details of observations without photos. Record the details of a sighting — date, confidence, magnitude, opposition, place, notes, and tags. WEB RESOURCES Most sky objects also link to a Wikipedia article with more information on the object. Many also have links to a NASA ‘Picture of the Day’ article. (Internet access needed to access these links.) One can also add Wikipedia and NASA links for sky objects that are added to the app.

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

MySkyPics4 screens
Zenith Annotation3 screens

Verdict

The call

The clearest difference is in-app purchases: MySkyPics at none against Zenith Annotation's 2. Zenith Annotation's advantage is update cadence (daily vs every 2 months) and iOS requirement (15.0 vs 18.6). On price, ads 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

Both are free to download. Zenith Annotation sells 2 in-app purchases, starting at $24.99 per year. MySkyPics asks for nothing beyond the download.

UpkeepUpdate frequency

MySkyPics ships an update every 2 months, Zenith Annotation daily. The most recent releases landed on October 11, 2026 and October 6, 2026 respectively.

Scorecard3 real differences · 5 level
MySkyPics versus Zenith Annotation: the parameters behind the verdict, then further details
ParameterMySkyPicsZenith Annotation
PriceFreeFree
Positive reviews100.0% of reviews—
Update frequencyEvery 2 monthsDaily — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS18.615.0 — better
Further details — not scored
Size6 MB47 MB
Age rating4+4+
DeveloperNNN SoftwareEduardo Martinez Gomez

In-app purchases

None

MySkyPics

No in-app purchases

2 purchases

Zenith Annotation

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

Questions

Is MySkyPics free?
MySkyPics is free to download, with no in-app purchases.
Is Zenith Annotation free?
Zenith Annotation is free to download, with in-app purchases available.
Do MySkyPics or Zenith Annotation have ads?
Neither MySkyPics nor Zenith Annotation shows ads.
Which is updated more often, MySkyPics or Zenith Annotation?
MySkyPics ships an update every 2 months, and Zenith Annotation daily. Most recently, MySkyPics was updated on October 11, 2026 and Zenith Annotation on October 6, 2026.

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