Just One vs Starply
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Just One
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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/
Screenshots
Verdict
Just One and Starply are too close to call on the numbers: across 6 compared parameters β price, update cadence, ads and in-app purchases among them β neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Just One ships an update every 4 days, Starply every 6 days. The most recent releases landed on October 20, 2026 and October 28, 2026 respectively.
| Parameter | Just One | Starply |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 4 days β better | Every 6 days |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone | iPhone |
| Requires iOS | 17.0 | 17.0 |
| Further details β not scored | ||
| Size | 2 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Sung Hoon Chang | Yaechan Kim |
In-app purchases
Just One
No in-app purchases
Starply
No in-app purchases









