Comparison

Countdown Stack vs One

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

Head to head
About

Countdown Stack

Easily track important upcoming events and personal goals. This app provides a clean interface to visualize your milestones, from birthdays to deadlines, across all your Apple devices. Unlock unlimited tracking and advanced features with an in-app purchase.

Highlights
  • Event and goal tracking
  • Clean and modern interface
  • Cross-device synchronization
  • Beautifully displayed countdowns
  • Unlimited countdowns (in-app purchase)
Features
Read full description

Your favorite events and goals are always just a glance away. Countdown Stack helps you stay organized and inspired by keeping track of what matters most, from birthdays and vacations to launches, anniversaries, and important deadlines. Designed with a clean and modern interface, it brings your upcoming moments to life across iPhone, iPad, Mac, and Apple Watch. Each countdown is beautifully displayed, letting you track your moments effortlessly wherever you are. Whether you’re planning a big day or simply looking forward to the weekend, Countdown Stack keeps your milestones front and center. Three countdowns are included for free, and you can unlock unlimited countdowns and additional features through an in-app purchase. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula

About

One

Features
Read full description

Instant, distraction-free timestamp recorder. Log any moment, symptom, habit, mood, or shift in milliseconds with optional GPS location, custom streams, and 100% offline CSV and ZIP exports. A MINIMAL EVENT LOGGER, NOT A BLOATED DIARY OR JOURNAL Most journal apps ask for paragraphs. Timeli asks for a single tap. It is a focused timestamp recorder for the things you want an exact record of without typing: • Health & Symptoms: When a migraine or headache started, when pain peaked, or when you took a medication dose. • Habits & Routines: Daily water check-ins, mood logs, workouts, meditation stamps, counter tally, or baby feeds. • Work & Shifts: Clock-in timestamps, shift hours, client appointments, and field visit verification proof. HOW IT WORKS 1. Hold the dial to capture a moment instantly, or tap to open notes. 2. Switch streams effortlessly from the orbiting controls. 3. Attach photos, voice memos, numeric values, or custom tags. 4. Auto-attach GPS coordinates when location is enabled. 5. Review your daily timeline and history, and export clean, share-ready records anytime. KEY FEATURES • Instant Timestamp Logging: Record moments in milliseconds with zero friction. • Orbiting Stream Controls: Organize distinct activities, habits, and symptoms into separate streams. • Rich Context: Add long-form notes, audio voice memos, photos, and custom tags. • Multi-Metric Tracking: Record numbers, ratings, and choices with custom measurement units. • 100% Offline Privacy: Data never leaves your device. No cloud accounts, logins, or tracking. • CSV & ZIP Exports: Export CSV spreadsheets or full ZIP archives with media attachments. TIMELI PRO Timeli is fully functional for free with up to 3 streams, unlimited logs, notes, media attachments, and CSV exports. Upgrade to Timeli Pro for: • Up to 8 custom streams • Up to 8 observation fields per stream (ratings, choices, units) • Saved views and compound search filters • Measurement trends and matched-period comparisons Available as an optional monthly ($1.99), yearly ($9.99), or lifetime ($24.99) purchase. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://yellowsquared.us/timeli/privacy

Screenshots

Countdown Stack4 screens
One4 screens

Verdict

The call

The clearest difference is update cadence: One at every 5 days against Countdown Stack's every 6 weeks. One also leads on iOS requirement (15.0 vs 26.0). On price, ads, in-app purchases and device support 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. Countdown Stack sells 2 in-app purchases, starting at $0.29 per month and One sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Countdown Stack ships an update every 6 weeks, One every 5 days. Both last shipped on November 5, 2026.

Scorecard2 real differences · 8 level
Countdown Stack versus One: the parameters behind the verdict, then further details
ParameterCountdown StackOne
PriceFreeFree
Rating5.0 (5 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings5 — better—
Update frequencyEvery 6 weeksEvery 5 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, Apple WatchiPhone, iPad, iPod
Requires iOS26.015.0 — better
Further details — not scored
Size36 MB46 MB
Age rating4+4+
DeveloperDmitry KhotinskiyYellowsquared LLC

In-app purchases

2 purchases

Countdown Stack

Subscriptions2
  • Premium (Monthly)$0.291 Month
  • Premium (Annual)$2.491 Year
3 purchases

One

Subscriptions2
  • Timeli Pro Monthly7 Days trial$1.991 Month
  • Timeli Pro Yearly7 Days trial$9.991 Year
One-time1
  • Timeli Pro$24.99

Questions

Is Countdown Stack free?
Countdown Stack is free to download, with in-app purchases available.
Is One free?
One is free to download, with in-app purchases available.
Do Countdown Stack or One have ads?
Neither Countdown Stack nor One shows ads.
Which is updated more often, Countdown Stack or One?
Countdown Stack ships an update every 6 weeks, and One every 5 days. Most recently, Countdown Stack was updated on November 5, 2026 and One on November 5, 2026.

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