Comparison

Sunadokei vs Fill

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

Head to head
About

Sunadokei

Features
Read full description

Sunadokei is a sand timer you can read at a glance. Pick a time and the falling sand shows how much is left, whether it is a study block, a short break, a workout set or something on the stove. When you would rather not watch numbers, switch to a sand-only view. • Nine hourglass shapes, all free. Start with four free seasonal sand colors. • Presets for 1, 3, 5, 10, 25 or 60 minutes, or set your own time. Pause and resume anytime. • Sand-only view while you focus. Add a short note when a timer finishes. • History and accumulated sand show the time you have put in. Home Screen widget included. Free with ads: a banner on the main screen and full-screen ads that may appear after finished timers. Sunadokei Pro is a one-time purchase, not a subscription: 10 more sand colors and no ads. See the purchase screen for the current price. Privacy Policy: https://kazusa703.github.io/privacy.html Terms of Use: https://kazusa703.github.io/terms.html Support: https://kazusa703.github.io/support.html

About

Fill

Features
Read full description

Fill-Timer isn't just a countdown it makes time something you can actually see. Start a timer and watch the hourglass slowly fill up. Seasonal particles drift across your screen. When time's up, a gentle chime brings you back. Simple. Intentional. Calming. Timer • Intuitive dial interface — spin to set your time in seconds • Animated hourglass — sand grains fall and pile up as time passes • Push notification when timer ends, even when the app is in the background • Multiple alert sounds to choose from Seasonal Themes • Spring: soft cherry blossom petals • Summer: clear raindrops sliding down • Autumn: drifting maple leaves and pumpkin season • Winter: pure white snowflakes Premium Themes Unlock exclusive themes including Candy Cane, Soccer, Carnation, Colour Ball and more. Go ad-free and make Fill-Timer your own personal time space. Life Clock Enter your birthday and see how many seasons you have left. Not to create anxiety — but to remind you to savour them. Available in English, Traditional Chinese, Simplified Chinese, Japanese, Korean, French and Spanish.

Screenshots

Sunadokei3 screens
Fill4 screens

Verdict

The call

The clearest difference is ads: Fill at none against Sunadokei's shown. Fill also leads on update cadence (daily vs every 5 weeks). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Sunadokei sells 1 one-off in-app purchase and Fill sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Sunadokei ships an update every 5 weeks, Fill daily. Both last shipped on October 24, 2026.

Scorecard2 real differences Ā· 4 level
Sunadokei versus Fill: the parameters behind the verdict, then further details
ParameterSunadokeiFill
PriceFreeFree
Update frequencyEvery 5 weeksDaily — better
AdsYesNo — better
In-app purchasesYesYes
DevicesiPhoneiPhone, iPad — better
Requires iOS17.016.6 — better
Further details — not scored
Size12 MB25 MB
Age rating4+4+
Developeratsuko imaiCheng Hung Lo

In-app purchases

1 purchases

Sunadokei

One-time1
  • Sunadokei Pro$2.99
3 purchases

Fill

One-time3
  • Remove Ads$1.99
  • Premium Scenes$1.99
  • Bundle Package$2.99

Questions

Is Sunadokei free?
Sunadokei is free to download, with in-app purchases available.
Is Fill free?
Fill is free to download, with in-app purchases available.
Do Sunadokei or Fill have ads?
Sunadokei shows ads; Fill does not.
Which is updated more often, Sunadokei or Fill?
Sunadokei ships an update every 5 weeks, and Fill daily. Most recently, Sunadokei was updated on October 24, 2026 and Fill on October 24, 2026.

Other comparisons