Comparison

SolarZero vs Swim Legion

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

Head to head
About

SolarZero

Monitor and optimize your home's solar energy system with real-time data on energy generation and usage. Track carbon savings, access energy-saving modes, and refer friends to the service.

Highlights
  • Real-time energy generation and usage data
  • Energy import/export status updates
  • Carbon savings and footprint tracking
  • Hot water energy saving mode
  • Refer-a-Friend program
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Get visibility of your solar energy system If you’re a SolarZero customer, our new SolarZero App gives you access to a personalised dashboard where you can monitor and optimise your solar energy system, including: β€’ See up-to-date data on how much energy your home is using and generating β€’ Get energy status updates showing how much energy you’re importing and exporting from and to the grid β€’ Track your carbon savings and footprint β€’ Access to your hot water energy saving mode that allows you to save money on your power bill β€’ Refer-a-Friend: Share your unique referral code with your friends and family Note - The SolarZero App is available for solar energy systems installed after November, 2018. If your system was installed prior to this date, it won’t be compatible unless you’ve been upgraded since, and you’ll need to continue using your MySolarZero dashboard for all your monitoring needs. Unsure? No worries. Contact us on 0800 11 66 55 and one of our friendly energy experts will be happy to help.

About

Swim Legion

Features
Read full description

Swim Legion – Your Personal Swim Training Companion Swim Legion is the ultimate swim training app designed for swimmers of all levels. Whether you are preparing for competitions or simply want to improve your technique and fitness in the pool, Swim Legion gives you the tools to plan, track, and enhance your swimming journey. Key Features: Create and Customise Workouts: Design your own swim workouts or generate random sessions tailored to your swimming level and goals. Plan Your Training: Assign workouts to specific dates to create a personalised swim schedule and stay organised with your training plan. Workout Timer: Stay on track during your sessions with a built-in workout timer, helping you keep pace and measure your effort. Training Log: Keep a detailed record of your past workouts, monitor your progress over time, and stay motivated by seeing your achievements. Profile and Settings: Customise your profile and set key parameters such as swimming level, age, and preferences to make the app truly yours. Swim Legion is perfect for swimmers looking to bring structure to their swim training, stay consistent, and achieve their goals. Join the Swim Legion and make every swim count!

Screenshots

SolarZero4 screens
Swim Legion4 screens

Verdict

The call

The clearest difference is iOS requirement: Swim Legion at 15.0 against SolarZero's 17.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

SolarZero ships an update monthly, Swim Legion every 3 weeks. The most recent releases landed on November 4, 2026 and October 30, 2026 respectively.

Scorecard1 real difference Β· 7 level
SolarZero versus Swim Legion: the parameters behind the verdict, then further details
ParameterSolarZeroSwim Legion
PriceFreeFree
Positive reviews35.7% of reviewsβ€”
Update frequencyMonthlyEvery 3 weeks β€” better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeβ€”
DevicesiPhone, iPadiPhone, iPod
Requires iOS17.015.0 β€” better
Further details β€” not scored
Size22 MB8 MB
Age rating4+17+
DevelopersolarZero LimitedNZ Marketing Group Limited

In-app purchases

None

SolarZero

No in-app purchases

None

Swim Legion

No in-app purchases

Questions

Is SolarZero free?
SolarZero is free to download, with no in-app purchases.
Is Swim Legion free?
Swim Legion is free to download, with no in-app purchases.
Do SolarZero or Swim Legion have ads?
Neither SolarZero nor Swim Legion shows ads.
Which is updated more often, SolarZero or Swim Legion?
SolarZero ships an update monthly, and Swim Legion every 3 weeks. Most recently, SolarZero was updated on November 4, 2026 and Swim Legion on October 30, 2026.

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