Dora vs Chronos
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Dora
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This App is a simple countdown timer that uses sounds to let you know how much time is left during presentations and meetings. You don't need to keep checking the screen while presenting. Wooden clappers sound at two preset times, and a gong sounds when the timer reaches zero. Available on iPhone, iPad, and Apple Watch. Connect your iPhone or iPad to an external display to show the remaining time on a monitor or projector at your venue. ■ Key Features ・Start, pause, and reset the countdown ・Set two reminder times ・Preview sounds ・Play a gong sound when time runs out ・Receive local notifications ・Prevent automatic sleep while the timer is running ・Display the remaining time on an external screen ・Support for Light, Dark, and System appearance modes ・Available in Japanese, English, Simplified Chinese, Korean, and Spanish ・VoiceOver support ■ About Reset First Reset: Returns to the configured presentation duration Second Reset: Clears the timer to 0:00 ■ Privacy No account registration is required. No ads or analytics SDKs are used. Settings are stored separately in the iOS app and Apple Watch app and are not automatically synced between devices. The app works without communicating with external servers.
Chronos
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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
Verdict
The clearest difference is iOS requirement: Chronos at 18.0 against Dora's 26.0. On price, update cadence, ads and in-app purchases 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.
Both ship on a similar rhythm, roughly weekly. The most recent releases landed on October 21, 2026 and October 8, 2026 respectively.
| Parameter | Dora | Chronos |
|---|---|---|
| Price | Free | Free |
| Update frequency | Weekly | Weekly |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, Apple Watch — better | iPhone, iPad |
| Requires iOS | 26.0 | 18.0 — better |
| Further details — not scored | ||
| Size | 6 MB | 45 MB |
| Age rating | 4+ | 4+ |
| Developer | Saki Hiraguchi | Archest, LLC |
In-app purchases
Dora
No in-app purchases
Chronos
No in-app purchases









