Comparison

Deimos vs Stellar Horizon

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

Head to head
About

Deimos

Embark on a sci-fi adventure as an elite Space Marine investigating a mysterious moon outpost. Make choices that shape your story, find weapons and armor, and battle dangerous enemies in this action-packed RPG.

Highlights
  • Story-driven investigation
  • Choice-based gameplay
  • Item and weapon collection
  • Combat against enemies
  • Role-playing adventure
  • Easy pick-up-and-play design
Features
Read full description

You and an elite team of Space Marines are sent to the distant Deimos science station to provide security and investigate recent happenings on the moon outpost. Upon arrival you quickly discover that not all is as it seems... You and your team of marines will have to investigate the various corridors of the Deimos science station to determine what is going on. Along the way you will be presented which choices, and the choices you make will determine how the game plays out. You will also find different items, weapons, and armors along the way to help on your quest. There will also be dangerous enemies waiting for you to fight throughout the station! It's classic roleplaying adventure mixed with the convenience of mobile! And who can beat a free game? Deimos is an action and story driven mobile role playing adventure game based on the acclaimed Level Up RPG engine by Ape Apps. The game is designed with mobile users in mind, built for easy pick up and play. Simple controls and an encompassing storyline will make Deimos a must have for your iOS app game library! Deimos takes a simplified approach to the RPG genre. It is made in a way that is quick to pick up and learn, and you should be able to play for either a few minutes, or a few hours. After a while, it can get addicting. Like other role playing games, you travel and find different items and weapons and put them to use while fighting off baddies. Watch your health and energy and try to survive. Deimos is designed to be easy to play for users of all ages, from kids to adults. This is not a complicated RPG so anybody should be able to master it quickly. It also runs well on both handset and tablet devices. If you like Deimos and this style of mobile role playing game, then you should try my other mobile RPG called Level Up RPG, a role playing game on which Deimos was based.

About

Stellar Horizon

Embark on an interstellar journey in a vast, procedurally generated universe. Explore planets, discover alien life, build space stations, and engage in trade or combat. Your choices shape your path to skill, knowledge, wealth, and power.

Highlights
  • Explore procedurally generated universe
  • Discover planets and alien species
  • Build and manage space stations
  • Engage in trading and combat
  • Complete missions and analyze samples
  • Discover wormholes and ancient secrets
Features
Read full description

Travel among the stars, explore planets, discover new animal species and ancient monoliths, build your own space station, encounter aliens, trade and combat in an infinite procedurally generated universe ! Stellar Horizon is a game about exploration and survival. Starting with only a small starship and a few credits, do whatever it takes to earn skill, knowledge, wealth and power. Trading, hunting, mining, exploration : how you play Stellar Horizon is up to you. A TRULY OPEN UNIVERSE You can fly seamlessly from the surface of a planet to another, and every star in the sky is a sun that you can visit. Where you’ll go and how fast you’ll make your way through this universe is up to you. BUILD FOR AN EPIC JOURNEY Whether you want to explore and see things never before discovered, or directly find the best trade routes, how you play Stellar Horizon is up to you. Explore and map new star systems, earning yourself recognition and credits. Help rebels overthrow an oppressive regime or a government put down a rebellion, working as a gun-for-hire or assassin. Trade and influence the commodity market prices. Buy your own spatial stations and become an entrepreneur! Complete geographic missions, or analyse vegetal/water samples from different systems to become a renowned scientist! Discover new animal species, or learn alien language to communicate with local inhabitants! Build your own base on a beach, on your favorite planet! Discover wormholes that allow you to reach thousands light years distant systems! Discover new planets and enjoy gorgeous landscapes : every planet is different from the next. Find ancient monoliths that could reveal the secrets behind the universe... Explore giant bunkers, and find legendary items 4 BILLION STAR SYSTEMS. INFINITE FREEDOM. BLAZE YOUR OWN TRAIL. *************************************************************** *************************************************************** What is procedural generation ? Core to Stellar Horizon is that its virtual galaxy, including the stars and planets, are all created through random procedural generation using deterministic algorithms. A single seed number is used to create these features via mathematical computation thus eliminating the need to create each of these features by hand. This enables the game to have a massively open nature: it is estimated that with the 32-bit seed number, Stellar Horizon virtual galaxy will include over 4 billion planets. Any player will be able to visit a specific planet once they know its galactic coordinates, given their spacecraft has the capability to do so, and find the same features as any other player, as these coordinates serve as the seed for the planet's topography and environment.

Screenshots

Deimos3 screens
Stellar Horizon4 screens

Verdict

The call

The clearest difference is price: Deimos at Free against Stellar Horizon's $3.99. Deimos also leads on rating (5.0 vs 3.9). Stellar Horizon's advantage is in-app purchases (none vs 3) and ads (none vs shown). On 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

Deimos is free to download; Stellar Horizon costs $3.99 up front. Deimos sells 3 one-off in-app purchases. Stellar Horizon asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Deimos holds the better App Store score, 5.0 against 3.9. That said, the two scores are not equally well evidenced: Stellar Horizon has 57 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 50% of Deimos's written reviews are positive against 64% of Stellar Horizon's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Deimos ships an update every 7 months, Stellar Horizon every 3 weeks. The most recent releases landed on October 5, 2026 and October 17, 2026 respectively.

Scorecard9 real differences · 1 level
Deimos versus Stellar Horizon: the parameters behind the verdict, then further details
ParameterDeimosStellar Horizon
PriceFree — better$3.99
Rating5.0 (1 ratings) — better3.9 (57 ratings)
Positive reviews50.0% of reviews63.5% of reviews — better
Number of ratings157 — better
Update frequencyEvery 7 monthsEvery 3 weeks — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.012.0 — better
Further details — not scored
Size5 MB60 MB
Age rating12+12+
DeveloperBrandon SteckleinS.MARSAULT

Customer experience

Deimos

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

Stellar Horizon

All ratings57 ratings
Positive68.4%
Neutral15.8%
Negative15.8%
Written reviews96 reviews
Positive63.5%
Neutral15.6%
Negative20.8%

Bugs and requests

Deimos

Not enough reviews yet to summarise bugs or requests.

Stellar Horizon

Reported bugs

11 issues
  • Game crashes on launch for some devices (iPhone 5, iPad Mini)
  • Launch button disappears during gameplay
  • Cannot launch from flat surfaces
  • Game hangs when not skipping animations
  • Planetary exploration gets stuck and prevents takeoff
Show 6 more
  • Discovery scanning not working (version 1.0.105)
  • Manual docking at orbital stations is impossible
  • Slow frame-by-frame movement causing 10+ second delays per action
  • Navigation pointer doesn't correctly point to mission targets
  • Crashes when approaching stations
  • Interface bugs with skip function

Requested features

20 requests
  • Free-flowing joystick movement on planets instead of grid-based
  • Improved star map with zoom and selection capabilities
  • Tutorial or guided onboarding system
  • Larger, scalable text options
  • Multiple planets per star system
Show 15 more
  • Moons and orbital mechanics
  • Real-time smooth planetary exploration
  • Direct mission navigation with auto-pilot
  • Multiplayer or PvP functionality
  • Better ship and station graphics
  • More interactive content on planets (aliens, combat, NPCs)
  • Difficulty settings
  • Faster planetary movement animations
  • Asteroid mining and resource gathering in space
  • Story-driven campaign or narrative elements
  • MFi controller support
  • Motion/tilt controls for flight
  • Variable speed control during flight
  • Automatic docking computer
  • Strategy guide or in-game hints

In-app purchases

3 purchases

Deimos

One-time3
  • 100 Ape Coins$0.99
  • Advertising Removal$1.99
  • 500 Ape Coins$4.99
None

Stellar Horizon

No in-app purchases

Questions

Is Deimos free?
Deimos is free to download, with in-app purchases available.
Is Stellar Horizon free?
Stellar Horizon costs $3.99, with no in-app purchases.
Which has better reviews, Deimos or Stellar Horizon?
Deimos is rated higher. Deimos averages 5.0 out of 5 from 1 ratings, while Stellar Horizon averages 3.9 from 57 ratings.
Do Deimos or Stellar Horizon have ads?
Deimos shows ads; Stellar Horizon does not.
Which is updated more often, Deimos or Stellar Horizon?
Deimos ships an update every 7 months, and Stellar Horizon every 3 weeks. Most recently, Deimos was updated on October 5, 2026 and Stellar Horizon on October 17, 2026.

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