Fast vs LightsOn
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Fast
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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.
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.
- 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
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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
Verdict
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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Fast ships an update every 2 months, LightsOn weekly. The most recent releases landed on November 5, 2026 and November 7, 2026 respectively.
| Parameter | Fast | LightsOn |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.9 (47 ratings) — better |
| Positive reviews | — | 96.7% of reviews |
| Number of ratings | — | 47 — better |
| Update frequency | Every 2 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPod | iPhone, Apple Watch |
| Requires iOS | 15.1 — better | 18.0 |
| Further details — not scored | ||
| Size | 43 MB | 29 MB |
| Age rating | 4+ | 4+ |
| Developer | Borche Davchev | Jirko Cernik |
In-app purchases
Fast
No in-app purchases
LightsOn
No in-app purchases









