Best Celsius Online Apps & Games

240+ iOS apps & games curated and reviewed

4.6 avg rating
19 free apps & games
Updated October 2026

Primal Legends is the household name in celsius online, but it's far from the only option. We track 240+ alternatives and competitors on iOS โ€” many free, many higher-rated than you'd expect.

Compare top Celsius Online Apps & Games (October 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Primal LegendsPrimal LegendsFree4.3โ˜… (381)NoYesNov 2026
2Mutants: Genetic GladiatorsMutants: Genetic GladiatorsFree4.4โ˜… (1.9K)YesYesNov 2026
3iCelsiusiCelsiusFree4.2โ˜… (136)NoNoOct 2026
4Smart Cookie CatSmart Cookie CatFree4.9โ˜… (8)NoYesOct 2026
5Mutants: GenesisMutants: GenesisFree3.5โ˜… (11)YesYesOct 2026
6Celsius Thermometer PlusCelsius Thermometer PlusFree4.7โ˜… (54)YesYesOct 2026
7Play For PlanktonPlay For PlanktonFreeโ€”NoNoOct 2026
8Fahrenheit Celsius CalculatorFahrenheit Celsius CalculatorFree4.6โ˜… (1.8K)YesYesNov 2026

Top Picks for Celsius Online

4.3๐Ÿ˜(381 ratings)
FreeIn-App Purchases
Primal Legends screenshot 1
Primal Legends screenshot 2
Primal Legends screenshot 3
Primal Legends screenshot 4
Primal Legends screenshot 5

Engage in strategic real-time combat by collecting and evolving over 50 unique heroes. Battle through hundreds of levels and challenge players globally to climb the leaderboards and earn exclusive rewards.

What We Love

  • ๐Ÿš€ Great game
  • ๐Ÿ‘ Addictive gameplay
  • ๐ŸŽจ Cool designs
  • ๐Ÿ’ก Unique twist on match-3

Room to Improve

  • ๐Ÿ› Frequent crashes and disconnects
  • โฑ๏ธ Slow progression and long wait times
  • ๐Ÿ”’ Account issues and bans
  • ๐Ÿ” Lack of support and communication
Mutants: Genetic Gladiators#2

Mutants: Genetic Gladiators by Celsius online

Exciting tactical combat
Strong Contender
๐ŸŽฎ Games
4.4๐Ÿ˜(1.9K ratings)
FreeAdsIn-App Purchases
Mutants: Genetic Gladiators screenshot 1
Mutants: Genetic Gladiators screenshot 2
Mutants: Genetic Gladiators screenshot 3

Collect and breed unique creatures to assemble a powerful team for tactical 3v3 combat. Battle opponents worldwide, climb leaderboards, and unlock new mutants through discovery and cross-breeding.

What We Love

  • ๐ŸŽจ Creative character designs
  • ๐Ÿ”ฅ Engaging combat system
  • ๐Ÿ‘ Nostalgic and addictive gameplay
  • ๐Ÿ’Ž Generous with in-game currency

Room to Improve

  • โณ Lengthy ticket/energy recharge times
  • ๐ŸŽฐ Unsatisfactory luck with slot machine
  • ๐Ÿ’ฐ Expensive in-app purchases
  • ๐Ÿ› Frequent crashes and login issues
4.2๐Ÿ˜ž(136 ratings)
Free
iCelsius screenshot 1
iCelsius screenshot 2

Transform your iPhone, iPad, or iPod touch into a digital thermometer with this app. It works with a separate hardware probe to measure temperatures of liquids and other substances, create graphs, and set alerts. Ideal for cooking, science education, and quality control.

What We Love

  • ๐Ÿ‘ Accurate temperature readings
  • ๐Ÿ‘ Handy for monitoring
  • ๐Ÿ‘ Good for remote monitoring
  • ๐Ÿ‘ Works well for specific uses (e.g., cigars, BBQ)
  • ๐Ÿ‘ Good UI and graphing (when it works)
  • ๐Ÿ‘ Fast response to temperature changes
  • ๐Ÿ‘ Customer support praised (in some cases)
  • ๐Ÿ‘ App is improving with updates

Room to Improve

  • ๐Ÿ› Frequent crashes
  • ๐Ÿ› Connectivity issues (Wi-Fi, Bluetooth)
  • ๐Ÿ› Unreliable remote sensing
  • ๐Ÿ› Inconsistent readings/inaccurate
  • ๐Ÿ› Hardware failures (probes dying)
  • ๐Ÿ› Poor battery life/power issues
  • ๐Ÿ› App not supported on newer iOS versions
  • ๐Ÿ› Difficult setup process
  • ๐Ÿ› Lack of support/unresponsive company
  • ๐Ÿ› Expensive for unreliable product
  • ๐Ÿ› Software bugs and glitches
  • ๐Ÿ› Data loss when switching apps/device sleeps

More Celsius Online apps to explore

FAQ about Celsius Online

What are the best celsius online apps & games for iPhone?
Primal Legends tops our celsius online apps & games ranking as of October 2026, with a 4.3-star average from 381 App Store ratings, and it's free to download.
Yes โ€” 19 of the top celsius online apps & games we rank are free to download, including Primal Legends and Mutants: Genetic Gladiators.
Primal Legends has no ads and offers in-app purchases, according to its App Store listing as of October 2026.
We track 240+ celsius online apps & games on the iOS App Store as of October 2026, ranked by rating, recency, and analysis of real user reviews.