Comparison

Luma vs Chronos

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

Head to head
About

Luma

Save and instantly switch between your preferred screen brightness levels. Access these presets directly from a Home Screen widget for quick adjustments.

Highlights
  • Save custom brightness presets
  • Instant switching between presets
  • Home Screen widget access
  • Quick brightness adjustments
Features
Read full description

Luma lets you save your favorite screen brightness levels as presets and switch between them instantly. You can also launch presets from a Home Screen widget, so the right brightness is always just a tap away.

About

Chronos

Features
Read full description

Be the architect of time. Turn the dial, set the rhythm that feels right for you. Who said a second has to be a second? In the world you create, may you find your peace. Chronos is not another 25-minute timer. It is a focus clock built on one quiet truth: we all live in our own time. Some of us flow best at midnight. Some find our rhythm in the early morning. We each feel time differently — what feels like a second to you might stretch into a minute for someone else. And all around us, every moment on this planet, life unfolds at its own pace: a bird takes its first flight, a snowball rolls down a hill, a whale grows beneath the waves. To notice this is to find peace. WHAT HAPPENS IN AN HOUR • Twelve living watercolor worlds move with your clock. Watch a whale breach at dawn, mist drift over karst peaks, golden dunes shift in the wind, aurora dance across snow, and the galaxy bloom over midnight. The sun and moon trace real celestial arcs across the sky. • The world responds to you. Brush the screen and wind ripples through the grass. Tap a bird and it banks away. Touch the water and waves spread outward. Every sound is synthesized from pure mathematics — no recordings, no loops, just quiet, living whispers. • Life grows as you work. Eagles court, brood, and hatch their young on the cliffside. Two ships cross the evening sea to meet. Your focus becomes their story. WHEN THE HOUR ENDS It burns. Gently, completely. Then you mark it: one needle, five weights of time, a line if you wish, and your seal. Every hour has its weight. THE FRUITS OF TIME Your history is not a spreadsheet. It is an orchard. Every day is a tree. Every focus session is a fruit. Weekends glow in terracotta. Scroll back through your seasons, and see your time bloom. No account. No ads. No tracking. Your hours belong only to you, and stay only on your phone.

Screenshots

Luma1 screens
Chronos4 screens

Verdict

The call

The clearest difference is in-app purchases: Chronos at none against Luma's 1. Chronos also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement 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. Luma sells 1 one-off in-app purchase. Chronos asks for nothing beyond the download.

UpkeepUpdate frequency

Luma ships an update every 3 days, Chronos weekly. The most recent releases landed on October 31, 2026 and October 25, 2026 respectively.

Scorecard2 real differences · 7 level
Luma versus Chronos: the parameters behind the verdict, then further details
ParameterLumaChronos
PriceFreeFree
Rating3.8 (4 ratings) — better—
Number of ratings4 — better—
Update frequencyEvery 3 days — betterWeekly
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhoneiPhone, iPad — better
Requires iOS18.018.0
Further details — not scored
Size10 MB45 MB
Age rating4+4+
Developertomoki swansonArchest, LLC

In-app purchases

1 purchases

Luma

One-time1
  • 広告を非表示$0.99
None

Chronos

No in-app purchases

Questions

Is Luma free?
Luma is free to download, with in-app purchases available.
Is Chronos free?
Chronos is free to download, with no in-app purchases.
Do Luma or Chronos have ads?
Luma shows ads; Chronos does not.
Which is updated more often, Luma or Chronos?
Luma ships an update every 3 days, and Chronos weekly. Most recently, Luma was updated on October 31, 2026 and Chronos on October 25, 2026.

Other comparisons