Comparison

Countdown Timer Nano (Legacy) vs Ziro

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

Head to head
About

Countdown Timer Nano (Legacy)

A minimalist timer app with a clean design, offering both numerical and visual time tracking. It features large numbers, an animating circle that changes color with elapsed time, and optional sound alerts. The free version allows setting timers up to 60 minutes.

Highlights
  • Minimalist design
  • Numerical and graphical time representation
  • Animating circle timer
  • Optional sound alerts
  • Large, visible numbers
  • Up to 60-minute timers (free)
Features
Read full description

Features: ● Large numbers for great visibility. ● Simple and intuitive use. ● Circle animates and color changes as time is passing. ● Optional sounds to keep you on track! ● Set up time to 60 minutes (free version).

About

Ziro

Features
Read full description

Time, told in ones and zeros. Calm, delivered in soft hiss and rain. Ziro is a tiny piece of digital art that hides a binary clock and a white-noise machine inside one quiet screen. Open it on your desk while you work, set it by your bed while you sleep, or just leave it glowing on a spare phone as ambient room decor. No accounts, no ads, no nagging notifications — just zeros, ones, and the sound of focus. A BINARY CLOCK FOR THE TECHNICALLY CURIOUS Every column of dots is a digit; every dot is a power of two. Ziro turns the time of day into the same on/off language your computer speaks, making it an instant conversation piece for developers, engineers, students, and anyone who likes their gadgets a little geekier. Glance at it for a second and you get the time. Stare at it for a minute and you start to feel the pattern. It is the kind of clock that quietly teaches you something every time you check it. A FRIENDLY WAY TO LEARN BINARY Ziro doubles as a tiny lesson in how computers actually count. Watching the dots light up and reset teaches place value and powers of two more naturally than a textbook diagram. It is handy for students learning binary numbers for the first time, parents looking for a simple computer science explainer for kids, teachers wanting a visual aid, or anyone brushing up before a coding interview. There are no quizzes and no lessons to complete, just a clock that happens to explain itself. A POMODORO TIMER WITH WHITE NOISE BUILT IN Ziro pairs a classic Pomodoro work-and-break regime with a built-in sound machine, so deep work sessions arrive scored. Pick an interval, hit start, and let the soft hiss of white, pink, or brown noise mask office chatter while the binary dots quietly count down. Swap in rain, wind, or steady ambient hum to soothe a restless mind at bedtime, soundtrack a morning meditation, or help a baby drift off. Everything runs offline, so the soundscape never stops to buffer. A MINIMAL DESIGN, MADE AS AN ART PROJECT Ziro started as a small art project about how little a clock really needs to be. The result is a stripped-back interface with no menus to learn, no streaks to keep, and no dashboards to optimize. Just light, time, and sound — composed to feel calm on a nightstand and at home on a standing desk. Pick a color, dim the dots, and let the room change around it. FREE FOREVER, POWERED BY DONATIONS Ziro is completely free, with no subscriptions, no paywalls, and no advertising. If the app earns a spot in your daily routine, an optional donation inside the app keeps it independent and helps fund the next quiet feature. Download it, share it with the nerd in your life, and turn any screen into a small piece of moving art. Less interface. More time. Ziro. Ziro is free to download.

Screenshots

Countdown Timer Nano (Legacy)4 screens
Ziro4 screens

Verdict

The call

Countdown Timer Nano (Legacy) and Ziro are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on November 1, 2026 and November 5, 2026 respectively.

ScorecardNo meaningful differences
Countdown Timer Nano (Legacy) versus Ziro: the parameters behind the verdict, then further details
ParameterCountdown Timer Nano (Legacy)Ziro
PriceFreeFree
Rating4.3 (25 ratings) — better—
Positive reviews50.0% of reviews—
Number of ratings25 — better—
Update frequencyEvery 2 monthsEvery 2 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.0 — better15.1
Further details — not scored
Size3 MB46 MB
Age rating4+4+
DeveloperIgor DonkovInnolope

In-app purchases

None

Countdown Timer Nano (Legacy)

No in-app purchases

None

Ziro

No in-app purchases

Questions

Is Countdown Timer Nano (Legacy) free?
Countdown Timer Nano (Legacy) is free to download, with no in-app purchases.
Is Ziro free?
Ziro is free to download, with no in-app purchases.
Do Countdown Timer Nano (Legacy) or Ziro have ads?
Neither Countdown Timer Nano (Legacy) nor Ziro shows ads.
Which is updated more often, Countdown Timer Nano (Legacy) or Ziro?
Countdown Timer Nano (Legacy) ships an update every 2 months, and Ziro every 2 months. Most recently, Countdown Timer Nano (Legacy) was updated on November 1, 2026 and Ziro on November 5, 2026.

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