Comparison

Fast vs LightsOn

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

Head to head
About

Fast

Features
Read full description

Can I eat right now? Fast:Protocol checks today's planned eating hours and gives you one clear answer: YES or NO. It also shows when that answer will change, so you can follow your schedule without starting a timer or doing time math. Use Fast:Protocol to: • Set the eating hours you use on a normal day • Create weekly plans for days that follow a different schedule • Change one date without changing the rest of your week • See your current answer, countdown, and next scheduled change • Check Home Screen and Lock Screen widgets • Review previous days and browse the week ahead • Choose reminders for when eating hours begin and one hour before they end Set your schedule once. Check your answer whenever you need it.

About

LightsOn

This app transforms your real-world activity into a thriving virtual city. Burn calories to power your town, attract residents, and watch it grow. Neglect your activity, and the city will dim.

Highlights
  • Activity powers city growth
  • Automatic data import from Apple Health
  • Idle city builder gameplay
  • Earn bonus credits for workouts
  • Build upgrades and factories
  • City grows while you're away
Features
Read full description

LightsOn turns your real-world activity into a living city. Every active calorie you burn — walking, running, working out, or just moving through your day — flows straight from Apple Health into your city's battery. Keep it charged and the lights stay on: new residents move in, the streets come alive, and your town grows. Let the battery run dry and the city goes dark — residents pack up and leave. It's a cozy, idle city builder where YOU are the power plant. HOW IT WORKS • Your active energy from Apple Health charges the city automatically — no manual tracking, it just works in the background. • Lights on → residents arrive and your town thrives. • Battery empty → blackout, and people start to leave. • Real workouts earn bonus credits to spend on upgrades. • Build a factory that produces parts for bigger and better upgrades. • Your city keeps running while you're away — come back to see how far it grew. WHY YOU'LL LOVE IT • A real reason to move: every step and workout has a visible payoff. • Relaxed, no-pressure idle gameplay — perfect for short bursts. • A charming isometric city that's entirely yours to grow. • Clean, dark design that's easy on the eyes. FREE & PRIVATE • Completely free — no ads and no in-app purchases. • No tracking and no data collection — your health data never leaves your device. Move more, build more. How big can your city get?

Screenshots

Fast4 screens
LightsOn4 screens

Verdict

The call

The clearest difference is update cadence: LightsOn at weekly against Fast's every 2 months. Fast's advantage is iOS requirement (15.1 vs 18.0). On price, ads, in-app purchases and 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

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

UpkeepUpdate frequency

Fast ships an update every 2 months, LightsOn weekly. The most recent releases landed on November 5, 2026 and November 7, 2026 respectively.

Scorecard2 real differences · 8 level
Fast versus LightsOn: the parameters behind the verdict, then further details
ParameterFastLightsOn
PriceFreeFree
Rating—4.9 (47 ratings) — better
Positive reviews—96.7% of reviews
Number of ratings—47 — better
Update frequencyEvery 2 monthsWeekly — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPodiPhone, Apple Watch
Requires iOS15.1 — better18.0
Further details — not scored
Size43 MB29 MB
Age rating4+4+
DeveloperBorche DavchevJirko Cernik

In-app purchases

None

Fast

No in-app purchases

None

LightsOn

No in-app purchases

Questions

Is Fast free?
Fast is free to download, with no in-app purchases.
Is LightsOn free?
LightsOn is free to download, with no in-app purchases.
Do Fast or LightsOn have ads?
Neither Fast nor LightsOn shows ads.
Which is updated more often, Fast or LightsOn?
Fast ships an update every 2 months, and LightsOn weekly. Most recently, Fast was updated on November 5, 2026 and LightsOn on November 7, 2026.

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