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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Gong Timer is a simple countdown timer for presentations and meetings. Even when you are not looking at the screen during your talk, the app notifies you with sounds at your selected “seconds before the end” timing and when time is up. ■ Main Features ・Countdown timer ・Start / Pause / Reset controls ・Customizable reminders before the end ・Gong sound when time is up ・Prevents the device from sleeping while the timer is running ■ About Reset First Reset: returns to the set time Second Reset: clears the timer to 0:00 Your settings are saved on your device and restored the next time you open the app. No account, network connection, or communication is required.
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.
Dora ships an update every 5 days, Chronos weekly. The most recent releases landed on September 17, 2026 and September 22, 2026 respectively.
| Parameter | Dora | Chronos |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 days — better | 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





