Starply vs Onseol
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Starply
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Starply holds two kinds of writing. One is sending stars to your future self. Answer the question that surfaces today and send it off as a star. A month or a year later, it arrives again. By then you've changed a little, so you write back to who you were and leave a new question behind. Slowly, letters travel back and forth between you and yourself. On days when writing feels hard, leave your voice instead. Hearing yourself again, long after, brings that day back more vividly than anything you wrote down. The other is simply today's diary. It doesn't have to be grand. One line about your day and one mood is enough. Your moods and energy build up as colors on the calendar, and the stats show at a glance how you've really been doing. The stars you've sent stay up in the night sky. The farther away one floats, the longer until it arrives. Sometimes just looking up at that sky is enough to quiet your mind. If you find yourself wanting to write more often and at greater length, there's Starply Premium. Basic journaling and opening the stars that arrive are always free. Write down today's heart. For your future self, and for who you are today. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Onseol
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Onseol counts the days that matter โ no account, no sign-up. Every date lives only on your phone. โข Korean-style D-day โ D-DAY, D-100, and days-since counted from day 1. 100-day and yearly milestones, automatically. โข Lunar (์๋ ฅ) birthdays & memorials โ converted to the solar date each year. โข Home & Lock Screen widgets โ they survive iOS updates and stay date-sorted. โข Reminders โ 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 in-app purchases: Starply at none against Onseol's 1. Starply also leads on ads (none vs shown). Onseol's advantage is iOS requirement (15.0 vs 17.0). On price, update cadence and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Onseol sells 1 one-off in-app purchase. Starply asks for nothing beyond the download.
Starply ships an update every 6 days, Onseol every 11 days. The most recent releases landed on October 17, 2026 and September 29, 2026 respectively.
| Parameter | Starply | Onseol |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 6 days โ better | Every 11 days |
| Ads | No โ better | Yes |
| In-app purchases | No โ better | Yes |
| Devices | iPhone | iPhone, iPod โ better |
| Requires iOS | 17.0 | 15.0 โ better |
| Further details โ not scored | ||
| Size | 6 MB | 26 MB |
| Age rating | 4+ | 4+ |
| Developer | Yaechan Kim | Mustafa Salim Erek |
In-app purchases
Starply
No in-app purchases
Onseol
- Onseol Pro$9.99









