Countdown GO vs Onseol
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Countdown GO
Track upcoming events and activities with personalized visuals. Share your countdowns across Apple devices via iCloud. Use your iPad as a dynamic photo frame for your events.
- Add multiple activities
- Personalize with pictures
- iPad photo frame mode
- iCloud device sharing
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A fresh, modern look and a handy new feature! • Event history — Look back at all the events that have already passed, right from Settings. • Redesigned add screen — Creating an event is now a live preview: pick your photo and instantly see how your countdown will look. • Refreshed Premium & Privacy screens — Cleaner, clearer, and easier on the eyes. • Fixed a date bug — Events set for tomorrow no longer show up as "Today". • Various visual polish and small improvements.
Onseol
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Onseol counts the days that matter — no account, no sign-up. Every date lives only on your phone. • Korean-style D-day — D-DAY, D-100, and days-since counted from day 1. 100-day and yearly milestones, automatically. • Lunar (음력) birthdays & memorials — converted to the solar date each year. • Home & Lock Screen widgets — they survive iOS updates and stay date-sorted. • Reminders — D-7, D-DAY, and milestones, all on device. No subscription. No account. A one-time Pro removes the ads and lifts the event limit.
Screenshots
Verdict
The clearest difference is ads: Countdown GO at none against Onseol's shown. Countdown GO also leads on device support (5 vs 2). Onseol's advantage is iOS requirement (15.0 vs 17.0). On price, update cadence 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. Countdown GO sells 1 one-off in-app purchase and Onseol sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Countdown GO ships an update fortnightly, Onseol every 11 days. The most recent releases landed on September 15, 2026 and August 4, 2026 respectively.
| Parameter | Countdown GO | Onseol |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (16 ratings) — better | — |
| Positive reviews | 40.0% of reviews | — |
| Number of ratings | 16 — better | — |
| Update frequency | Fortnightly | Every 11 days — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, Mac, Apple TV, Apple Watch — better | iPhone, iPod |
| Requires iOS | 17.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 10 MB | 26 MB |
| Age rating | 4+ | 4+ |
| Developer | Jeroen Zonneveld | Mustafa Salim Erek |
In-app purchases
Countdown GO
- Premium$0.99
Onseol
- Onseol Pro$9.99
