Comparison

Evolution Planet vs Captain’s Log

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

Head to head
About

Evolution Planet

Create and customize your own solar systems with detailed control over planetary orbits, sizes, and rotation. Save up to 100 unique celestial configurations. Explore the vastness of space you design.

Highlights
  • Solar system simulation
  • Customizable planet orbits
  • Adjust planet size and rotation
  • Add rings and satellites
  • Save up to 100 solar systems
Features
Read full description

We develop to simulate a solar system, you can freely to configure and customise the solar system behaviour, change planet orbit size, shape, and speed. Also, you are change to planet size, rotational speed, rotational axis, and add ring, satellite and etc. Current it can store up to 100 different solar system.

About

Captain’s Log

This app transforms your device into a futuristic command center for space exploration fans. It offers tools for date conversion, 3D starship viewing, personal logging, and engaging quizzes, all within a sci-fi interface. Enjoy offline access and customization for an immersive experience.

Highlights
  • Stardate Converter with custom epochs
  • 3D Starship Viewer with AR previews
  • Captain & Crew Profile creation
  • Personal Captain's Log with Markdown
  • Memory Card Simulator challenges
  • Dynamic Galactic Quiz
  • Daily Mission Engine for habit tracking
Features
Read full description

Captain's Log: Stardate is a sci-fi command center for daily logs, stardate conversion, 3D starships, space missions, memory games, quiz challenges, ranks, rewards, and creative roleplay. If you want a captain log app, a stardate converter, or a space journal that feels like a real starship console, your bridge is ready. Turn your device into a futuristic captain's console. Record milestones as mission logs, convert calendar dates into stardates, explore 3D starship models, complete daily missions, play memory and quiz games, earn Dilithium, unlock command ranks, and build your own space diary. Whether you love space exploration, starship stories, astronomy, sci-fi games, creative journaling, or Starfleet-style command interfaces, every day becomes a mission. STARDATE CONVERTER Convert calendar dates into stardates with a clean galactic date tool. Use it for worldbuilding, tabletop RPG notes, sci-fi writing, fan logs, fictional timelines, campaign planning, or adding cosmic style to your memories. CAPTAIN'S LOG & SPACE JOURNAL Write daily captain logs, mission notes, personal reflections, achievements, creative entries, and fictional expedition records. Tags, ranks, themes, and a starship-inspired interface make your sci-fi diary feel like a real command archive. 3D STARSHIP HANGAR Explore 3D starships in a premium sci-fi hangar. Rotate, zoom, inspect, and collect ships. Perfect for fans of futuristic spacecraft, starship design, space games, fleet collections, and 3D models. DAILY MISSIONS Stay motivated with daily space missions and command objectives. Complete tasks, build habits, return to your logbook, and collect rewards — a habit tracker shaped like a starship duty roster. MEMORY GAME Train focus with a sci-fi memory card game. Unlock themed decks, test your recall, and enjoy short brain-game sessions in a futuristic space style. GALACTIC QUIZ Challenge yourself with sci-fi trivia, astronomy questions, technology lore, and starship facts. Earn badges, improve your score, and prove your command knowledge. DILITHIUM REWARDS & RANKS Earn Dilithium, unlock achievements, and rise through command ranks. Use the app as a lightweight space RPG, a daily habit tracker, or a creative captain simulator. WHY YOU'LL LOVE IT • Stardate converter for space timelines and creative logs • Captain's logbook for daily journaling and mission notes • 3D starships and futuristic hangar exploration • Daily missions for habit building and motivation • Memory game for focus and quick brain training • Quiz game for sci-fi, astronomy, and space trivia • Dilithium rewards, ranks, badges, and progression • Premium sci-fi interface inspired by starship consoles • Offline-friendly journal for logging anywhere • Great for space fans, sci-fi writers, RPG players, and journal lovers BUILT FOR SCI-FI FANS Captain's Log: Stardate is ideal if you search for a captain log, stardate app, space journal, sci-fi diary, starship game, space RPG, memory game, quiz game, daily mission app, galaxy logbook, futuristic habit tracker, offline journal, or creative writing companion. It blends utility, entertainment, and roleplay into one command experience. USE IT YOUR WAY Log real achievements as missions. Turn a normal day into a stardate entry. Plan a fictional voyage. Track writing ideas. Play a quick memory challenge. Test your sci-fi knowledge. Explore starships. Earn rewards. PREMIUM COMMAND ACCESS Start free and upgrade when you want more. Premium access can unlock customization, rewards, expanded missions, enhanced starship content, and a richer daily sci-fi experience. Optional in-app purchases may be available. BEGIN YOUR COMMAND Download Captain's Log: Stardate. Convert stardates, write captain logs, complete space missions, play memory and quiz games, explore 3D starships, earn Dilithium, and unlock ranks. Privacy Policy: https://cevik10.github.io/privacy.html Terms of Use: https://cevik10.github.io/terms.html

Screenshots

Evolution Planet4 screens
Captain’s Log4 screens

Verdict

The call

The clearest difference is price: Captain’s Log at Free against Evolution Planet's $14.99. Captain’s Log also leads on ads (none vs shown) and rating (5.0 vs 4.6). Evolution Planet's advantage is ratings volume (77 vs 1). On in-app purchases, 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

CostPrice · In-app purchases · Ads · Monetization

Captain’s Log is free to download; Evolution Planet costs $14.99 up front. Evolution Planet sells 6 one-off in-app purchases and Captain’s Log sells 6 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Captain’s Log holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Evolution Planet has 77 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Evolution Planet ships an update every 3 months, Captain’s Log monthly. The most recent releases landed on September 26, 2026 and September 13, 2026 respectively.

Scorecard6 real differences · 4 level
Evolution Planet versus Captain’s Log: the parameters behind the verdict, then further details
ParameterEvolution PlanetCaptain’s Log
Price$14.99Free — better
Rating4.6 (77 ratings)5.0 (1 ratings) — better
Positive reviews60.9% of reviews—
Number of ratings77 — better1
Update frequencyEvery 3 monthsMonthly — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.6 — better17.0
Further details — not scored
Size134 MB85 MB
Age rating4+4+
DeveloperOscar TsangHakan Cevik

Customer experience

Evolution Planet

All ratings77 ratings
Positive88.3%
Neutral3.9%
Negative7.8%
Written reviews23 reviews
Positive60.9%
Neutral17.4%
Negative21.7%

Captain’s Log

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

6 purchases

Evolution Planet

One-time6
  • 5000 Energy$1.99
  • Remove Ad$2.99
  • 30000 Energy$5.99
Show 3 more
  • 90000 Energy$9.99
  • 250000 Energy$19.99
  • 500000 Energy$29.99
6 purchases

Captain’s Log

Subscriptions2
  • Monthly Premium$4.991 Month
  • Yearly Premium7 Days trial$29.991 Year
One-time4
  • 80 Dilithium$0.99
  • 500 Dilithium$2.99
  • 1200 Dilithium$3.99
Show 1 more
  • 2500 Dilithium$7.99

Questions

Is Evolution Planet free?
Evolution Planet costs $14.99, and also offers in-app purchases.
Is Captain’s Log free?
Captain’s Log is free to download, with in-app purchases available.
Which has better reviews, Evolution Planet or Captain’s Log?
Captain’s Log is rated higher. Evolution Planet averages 4.6 out of 5 from 77 ratings, while Captain’s Log averages 5.0 from 1 ratings.
Do Evolution Planet or Captain’s Log have ads?
Evolution Planet shows ads; Captain’s Log does not.
Which is updated more often, Evolution Planet or Captain’s Log?
Evolution Planet ships an update every 3 months, and Captain’s Log monthly. Most recently, Evolution Planet was updated on September 26, 2026 and Captain’s Log on September 13, 2026.

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