Comparison

Concern vs Sol Frontiers

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

Head to head
About

Concern

Engage in strategic turn-based combat by building and managing a unique squad of giant combat robots. Lead your mercenary organization through offline and PvP battles, upgrading your arsenal and making critical leadership decisions that impact your organization's fate.

Highlights
  • Turn-based strategic combat
  • Build and customize mech squads
  • Offline and PvP robot wars
  • Mech collection and upgrades
  • Leadership decisions and organization management
  • Explore new adventures and rewards
Features
Read full description

Strategic turn based game. Create mech squad! Join the offline and pvp robot war. Experience an epic robot war in this strategic turn-based mobile game! As the manager of Concern, a mercenary organization with a formidable arsenal of giant combat robots, you must lead your squad into battle and emerge victorious. In offline and PvP modes, you'll face a variety of enemies and engage in intense battles where each turn counts. Your tactics will be crucial to achieving victory, so plan your attacks carefully and keep your enemies in your sights. Collect the most powerful mechs for every mission and equip them with the right weapons to test in real battles. The more you win, the more you can upgrade your combat arsenal! But it's not just about winning battles – your decisions as a leader also affect the success and reputation of Concern. Explore new adventures and rewards as you make choices that shape the direction of your organization. Will you convert enemies to your side and find allies to gain a numerical advantage, or will you rely solely on your own strength? The fate of Concern is in your hands!

About

Sol Frontiers

Embark on a sci-fi odyssey to reclaim humanity's lost home. Captain a mothership, awaken your crew, gather resources, and battle cosmic threats in an idle strategy adventure.

Highlights
  • Explore uncharted cosmos
  • Battle the Swarm and Deeper Darkness
  • Upgrade mothership and starfighters
  • Awaken and train diverse crew
  • Gather resources for repairs
  • Idle gameplay mechanics
Read full description

Millennia after our sun inexplicably began dying, the ember of humanity's hope burns anew. As the cosmos stretches out, vast and uncharted, the call of a homecoming beckons. Entrusted with the dream of reclaiming our long-lost cradle, the flagship THE CROWN OF DAHLIA set forth. But silence has shrouded its heralded journey, and now, it's gone missing. In SOL FRONTIERS you captain the JONAH'S WHALE, dispatched on a perilous mission to uncover the fate of the lost Dahlia and to piece together the fragments of a cosmic puzzle. Awaken your crew and expand your mothership. Navigate through haunting space graveyards, confront the sinister SWARM, and face the lurking DEEPER DARKNESS that threatens more than just humanity's return. Gather resources to repair your mothership With a diverse array of resources such as metal, crystals, and credits, ensure you grow your headquarters and, in turn, your reach by equipping and upgrading your crew's starfighters. Prevail over the Swarm Select from a multitude of available crew and awaken up to 18 to your roster. Explore and secure various areas of the cosmos by defeating enemy bosses. Hone your crew's skills in preparation for random enemy encounters as well as the ultimate challenge. Will you pierce the enigma and reclaim Earth? Or will the vastness of space swallow our last hopes? Allow the diverse idle gameplay to transport you into outer space and embark on a saga of discovery, destiny, and the unyielding spirit of humankind in this gripping sci-fi odyssey.

Screenshots

Concern4 screens
Sol Frontiers4 screens

Verdict

The call

Concern and Sol Frontiers both sit at 4.3 stars, but that hides the real split: 59% of Sol Frontiers's written reviews are positive against 46% of Concern's. Sol Frontiers also leads on iOS requirement (13.0 vs 15.0). On price, rating, ratings volume and update cadence 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. Concern sells 10 one-off in-app purchases and Sol Frontiers sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.3 for Concern against 4.2 for Sol Frontiers. Both are backed by a comparable volume of ratings — 258 and 122 respectively. Written reviews are what separate them: 46% of Concern's written reviews are positive against 59% of Sol Frontiers's.

UpkeepUpdate frequency

Concern ships an update every 3 weeks, Sol Frontiers fortnightly. The most recent releases landed on November 7, 2026 and November 3, 2026 respectively.

Scorecard2 real differences · 8 level
Concern versus Sol Frontiers: the parameters behind the verdict, then further details
ParameterConcernSol Frontiers
PriceFreeFree
Rating4.3 (258 ratings) — better4.2 (122 ratings)
Positive reviews46.2% of reviews58.7% of reviews — better
Number of ratings258 — better122
Update frequencyEvery 3 weeksFortnightly — better
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.013.0 — better
Further details — not scored
Size646 MB192 MB
Age rating9+12+
DeveloperBlack Box DigitalEarly Morning Studio AB

Customer experience

Concern

All ratings249 ratings
Positive81.5%
Neutral11.2%
Negative7.2%
Written reviews39 reviews
Positive46.2%
Neutral23.1%
Negative30.8%

Sol Frontiers

All ratings120 ratings
Positive80.8%
Neutral7.5%
Negative11.7%
Written reviews75 reviews
Positive58.7%
Neutral4.0%
Negative37.3%

User reviews

Concern

From 258 App Store ratings

What we love

  • 👍 Good core gameplay
  • 👍 Reminiscent of Battletech
  • 👍 Good graphics and atmosphere
  • 👍 Stable and fluid performance
  • 👍 Interesting gameplay mechanics

Room to improve

  • 😠 Overwhelming ads
  • 😠 Ads are time-consuming
  • 😠 Little payoff for watching ads
  • 😠 Pay to win is obvious
  • 😠 Game stagnates without payment

Sol Frontiers

From 122 App Store ratings

What we love

  • 🎨 Beautiful graphics
  • 👍 Enjoyable gameplay loop
  • ⭐ Similar to other successful games
  • 💡 Innovative space theme
  • 🚀 Good for patient players

Room to improve

  • ⏳ Slow progression
  • ⏳ Long wait times
  • 💰 Pay-to-win elements
  • 💸 Expensive in-game purchases
  • 😩 Repetitive gameplay

Bugs and requests

Concern

Reported bugs

10 issues
  • Missions won't load after update
  • Building points eaten when upgrading mechs
  • Game Center save progress and purchases lost after update
  • Restore purchases button does nothing
  • Game cannot customize colors after update
Show 5 more
  • Enemy mech stuck behind building out of range
  • Mechs get stranded behind buildings with no way to engage
  • Data deleted after a period of non-play time
  • Game crashes or freezes
  • Audio not working

Requested features

31 requests
  • More robots, modules, and weapons
  • More diverse storylines
  • More clans and familiar mechs
  • More missions for parts
  • Return of original mech speed/step
Show 26 more
  • Ability to rename pilots
  • Ability to disband squad members and mechs
  • Custom multicolor paint schemes
  • More options during battles
  • More story content
  • More varied skills and progression
  • Ability to choose mech deployment location
  • More weapon variety
  • Clan battles and arena development
  • More diverse missions
  • More pilot customization
  • More mech customization
  • More story missions
  • More diverse enemy types
  • More varied mission objectives
  • More strategic depth
  • More impactful pilot abilities
  • More diverse mech loadouts
  • More ways to acquire parts
  • More diverse combat scenarios
  • More engaging endgame content
  • More frequent updates with new content
  • Improved matchmaking system
  • Better tutorial for new players
  • Option to disable AI images
  • Add audio

Sol Frontiers

Reported bugs

16 issues
  • Save progress not working
  • Game no longer works on iPhone 12
  • Awaken 2 heroes bug
  • Crew is locked
  • Cannot save progress due to no login
Show 11 more
  • First quest bug (crew locked)
  • Buggy combat (0 damage rolls)
  • Promo code issues
  • Unable to open crew window
  • Game bugged after update, progress lost
  • Ad on galaxy screen stretches picture
  • Login issues after a day of playing
  • Game crashes
  • Text too small to read
  • Zooming in combat limited
  • Optimization issues (stuttering graphics)

Requested features

15 requests
  • Add skip ad feature
  • Add overview map
  • Option to buy with less/no ads
  • Add building base options
  • Add ship customization
Show 10 more
  • Add battle formations
  • Add unique weapons
  • Add more endgame content
  • Add more missions
  • Add permanent IAP (e.g., remove ads)
  • Add cloud save functionality
  • Add Steam version
  • Add more gold from ads
  • Add more story/backstory
  • Add voice actors for missions

In-app purchases

10 purchases

Concern

One-time10
  • 150 Parts$2.49
  • Money 5000$2.99
  • 60 Parts$2.99
Show 7 more
  • Starter Pack$3.49
  • 12'000 Money$4.49
  • No Ads + Gift$4.99
  • 150 Parts$4.99
  • 5'000 Money$5.99
  • Starter pack$6.99
  • 12'000 Money$9.99
10 purchases

Sol Frontiers

One-time10
  • Packet of Credits$0.99
  • Canister of Dark Matter$2.99
  • Starter Pack$2.99
Show 7 more
  • Starter Bundle$4.99
  • Starter Package$7.99
  • Array of Credits$9.99
  • Array of Dark Matter$14.99
  • Stockpile of Credits$29.99
  • Vault of Credits$59.99
  • Vault of Dark Matter$59.99

Questions

Is Concern free?
Concern is free to download, with in-app purchases available.
Is Sol Frontiers free?
Sol Frontiers is free to download, with in-app purchases available.
Which has better reviews, Concern or Sol Frontiers?
Concern is rated higher. Concern averages 4.3 out of 5 from 258 ratings, while Sol Frontiers averages 4.2 from 122 ratings.
Do Concern or Sol Frontiers have ads?
Both Concern and Sol Frontiers show ads.
Which is updated more often, Concern or Sol Frontiers?
Concern ships an update every 3 weeks, and Sol Frontiers fortnightly. Most recently, Concern was updated on November 7, 2026 and Sol Frontiers on November 3, 2026.

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