Comparison

Galaxy Map vs Auto Diary

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

Head to head
About

Galaxy Map

Explore the Milky Way and Andromeda galaxies in an interactive 3D map. Discover nebulae, supernovae, and planets, with stunning visuals based on NASA data. Ideal for education and space enthusiasts.

Highlights
  • Interactive 3D galaxy map
  • Explore nebulae and supernovae
  • Fly through planetary atmospheres
  • Land on planets
  • Based on NASA data
  • Available in 100+ languages
Features
Read full description

The galaxy map is an interactive map of the Milky Way galaxy, Andromeda and their satellite galaxies. Explore the Orion Arm's nebulae and supernovae from the comfort of your spaceship. Fly through the atmosphere of Mars and many other planets and you can even land on them. Discover the galaxy in a stunning three dimensional map based on NASA's artistic impression of the Milky Way galactic structure. Photos are taken by NASA spacecraft and ground based telescopes like Hubble Space Telescope, Chandra X-Ray, Herschel Space Observatory and the Spitzer Space Telescope. This interactive 3D map is excellent for teachers to use for instruction, and it is a great astronomy resource for students to explore the Milky Way galaxy and space as they learn more about the universe we live in. Available in over 100 languages! You can also From the outskirts of the galaxy, in the Norma-Outer spiral arm to the galactic center's supermassive black hole Sagittarius A*, discover a galaxy full of amazing facts. Notable structures included: the Pillars of Creation, Helix Nebula, the Engraved Hourglass Nebula, the Pleiades, the Orion Arm (where the solar system and the Earth are located) with its Orion belt. Check out neighboring dwarf galaxies such as Sagittarius and the Canis Major Overdensity, stellar streams as well as internal galactic components such as a variety of nebulae, star clusters or supernovae. Explore space and get a little closer to our wonderful universe with this awesome astronomy app! The Galaxy Map requires internet access to retrieve information from the wiki.

About

Auto Diary

Features
Read full description

AI-assisted Auto Diary — Let AI Write Your Story Just live your day. Auto Diary quietly records your activities — places visited, walks taken, sleep patterns, weather changes — then transforms them into a beautifully written diary with a single tap. See Yourself Through New Eyes Reading your own day narrated by AI creates a powerful psychological distancing effect. By viewing your experiences from a third-person perspective, you gain clarity, emotional balance, and deeper self-understanding — a recognized therapeutic technique now at your fingertips. One Sketch, Many Voices From a simple outline of your day, AI crafts your diary in six distinctive styles: · Lyrical Essay — warm, poetic reflections on everyday moments · Therapeutic — gentle self-compassion and emotional healing · Gratitude Journal — discover hidden blessings in ordinary days · Self-Reflection — deep, honest analysis of your thoughts and actions · Bright & Cheerful — humor and positive energy to lift your spirit · Minimal Record — clean, factual, no-frills journaling Learn Languages Naturally Write your diary in any of 10 supported languages, or choose Bilingual Mode to see your native language paired with an English translation — turning daily journaling into effortless language practice. Supported Languages: Korean, English, Japanese, Chinese, Spanish, French, German, etc. Your Privacy, Protected All diary entries, events, and personal data are stored exclusively on your device. Nothing is uploaded to any server. Your thoughts remain yours alone. Key Features: · Automatic life-logging: location, activity, sleep, weather · AI diary generation powered by Google Gemini · 6 writing styles to match your mood · AI editing tools: proofread, rewrite, expand, shorten · Bilingual mode for language learners · PDF export with cover page and table of contents · Weekly emotional review and pattern insights · Personal profile for natural name and relationship references · Beautiful, ad-minimal reading experience Start capturing your life story today. One tap. One diary. A new perspective on you. Is it really free? Auto Diary uses the Google Gemini API for AI writing. While API registration requires a paid account, actual usage for diary writing and map features is so minimal that no charges are incurred in practice. The API key takes less than a minute to obtain.

Screenshots

Galaxy Map4 screens
Auto Diary4 screens

Verdict

The call

The clearest difference is in-app purchases: Auto Diary at none against Galaxy Map's 13. Auto Diary also leads on ads (none vs shown) and iOS requirement (13.0 vs 15.0). On price, update cadence 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. Galaxy Map sells 13 one-off in-app purchases. Auto Diary asks for nothing beyond the download.

UpkeepUpdate frequency

Galaxy Map ships an update every 5 weeks, Auto Diary every 6 weeks. The most recent releases landed on September 30, 2026 and September 29, 2026 respectively.

Scorecard3 real differences · 7 level
Galaxy Map versus Auto Diary: the parameters behind the verdict, then further details
ParameterGalaxy MapAuto Diary
PriceFreeFree
Rating4.6 (600 ratings) — better—
Positive reviews80.0% of reviews—
Number of ratings600 — better—
Update frequencyEvery 5 weeks — betterEvery 6 weeks
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.013.0 — better
Further details — not scored
Size613 MB46 MB
Age rating4+4+
DeveloperAndrei NistorescuHeebok Lee

Bugs and requests

Galaxy Map

Reported bugs

9 issues
  • App crashes on startup
  • Explore button shows nothing
  • Pinch-to-zoom doesn't work
  • App won't load on iPad
  • Text displays as boxes in language settings
Show 4 more
  • Mars moon orbital speed incorrect
  • App kicks users out during exploration
  • Loading issues and incomplete functionality
  • Inconsistent performance across platforms

Requested features

18 requests
  • Search button to find galaxies and objects
  • More diverse and realistic black hole designs
  • AR feature to identify stars/planets in real sky
  • More free content and objects
  • Exoplanet additions (TRAPPIST-1e, J1407B)
Show 13 more
  • Ability to click on stars within galaxies for details
  • Generated planets around stars
  • Sandbox/creation mode for user-generated content
  • Animation for Milky Way and Andromeda
  • More galaxy variety in the app
  • Coordinates filter for objects
  • Space-Engine style gameplay
  • Flying through galaxies feature
  • More female character customization options
  • VIP version option
  • Brown dwarfs addition
  • Photosphere viewing mode
  • More detailed star information

Auto Diary

Not enough reviews yet to summarise bugs or requests.

In-app purchases

13 purchases

Galaxy Map

One-time13
  • Buy ship - Alien Destroyer$0.99
  • Buy ship - Alien fighter$0.99
  • Remove ads$1.99
Show 10 more
  • Buy ship - Alien Destroyer$1.99
  • Buy ship - Alien fighter$1.99
  • 3D Visualization Pack$1.99
  • Buy ship - Dragon Frigate$1.99
  • Essentials bundle - SALE$2.99
  • Remove ads$3.99
  • 3D Visualization Pack$3.99
  • Ultimate bundle - SALE$4.99
  • Essentials bundle$4.99
  • Ultimate bundle$8.99
None

Auto Diary

No in-app purchases

Questions

Is Galaxy Map free?
Galaxy Map is free to download, with in-app purchases available.
Is Auto Diary free?
Auto Diary is free to download, with no in-app purchases.
Do Galaxy Map or Auto Diary have ads?
Galaxy Map shows ads; Auto Diary does not.
Which is updated more often, Galaxy Map or Auto Diary?
Galaxy Map ships an update every 5 weeks, and Auto Diary every 6 weeks. Most recently, Galaxy Map was updated on September 30, 2026 and Auto Diary on September 29, 2026.

Other comparisons