Inkline vs Solo Diary
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Inkline
Record a single line of your day to create a lasting journal. Review past entries from previous years on the same date, with optional features like iCloud sync and custom themes available through a one-time purchase.
- One line daily entry
- Weather icon addition
- Historical date review
- Home screen widget
- Daily reminders
- No ads or sign-in
- Export to text
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One line a day. That's all. What you write tonight will be waiting for you next year, on this very day. The more you write, the more of your past todays come back to meet you. ใWRITEใ Ten seconds. - One line for today - No save button. Your words are kept as you type - Add a small weather icon: the sky outside, or your mind - Missed a day? A blank line is a record of its own ใREADใ Your todays gather. - Today's page quietly collects the same date from last week, last month, last year, and the years before - Lays every year of one date on a single page - A calendar and search bring any day back in a moment ใTOUCHใ without opening. - A widget leaves "a year ago today" on your Home Screen - One reminder a day, at the hour you choose. Never more - Night owls: until 3 AM, it still counts as today ใKEEPใ Your words are yours. - No ads. Ever - No account, no sign-in - Export as text anytime, free. Your diary is never held hostage ใINKLINE PROใ - one time purchase - No monthly anything. Pay once, keep it - iCloud sync - the same page on iPhone, iPad, and Mac - Themes and app icons - A PDF book of your years From the smallest of daily records, one day you'll feel how far you've come.
Solo Diary
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Solo Diary replaces the habit of opening social media with a timeline that's only yours. โ No one can see it No followers, no public posts, no like counts. What you write here is yours alone. Instead of comparing yourself to others, you face only your past self. โ Instead of likes, a word from an AI When you post, an AI leaves a short comment. Choose from three personalities โ Empathetic, Witty, or Matter-of-fact. AI comments are optional; every feature still works with them off. When on, only your note's text is sent to generate a comment. Photos are never sent. โ Your past self, returning "A month ago / a year ago today" surfaces at the top of your timeline, so you can gently reread how you felt back then. โ Quiet by design A dark theme. No red notification badges, and no endless scroll โ a finite timeline you can actually finish. โ In your language Available in English, Japanese, Chinese, Korean, and Spanish. The app follows your device language, and the AI replies in your language too. No account needed. Your data stays on your device and can be deleted anytime. Free to use (ads support the AI feature). Prefer no ads? A one-time "Remove ads" purchase hides them all.
Screenshots
Verdict
The clearest difference is in-app purchases: Solo Diary at none against Inkline's 1. Solo Diary also leads on iOS requirement (15.0 vs 17.0). Inkline's advantage is ads (none vs shown). 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. Inkline sells 1 one-off in-app purchase. Solo Diary asks for nothing beyond the download.
Inkline ships an update monthly, Solo Diary every 6 weeks. Both last shipped on October 31, 2026.
| Parameter | Inkline | Solo Diary |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | โ |
| Update frequency | Monthly โ better | Every 6 weeks |
| Ads | No โ better | Yes |
| In-app purchases | Yes | No โ better |
| Monetization | Freemium | โ |
| Devices | iPhone, iPad, Mac โ better | iPhone, iPod |
| Requires iOS | 17.0 | 15.0 โ better |
| Further details โ not scored | ||
| Size | 10 MB | 28 MB |
| Age rating | 4+ | 12+ |
| Developer | Kouki Yamashita | Sae Ueno |
In-app purchases
Inkline
- Inkline Pro$5.99
Solo Diary
No in-app purchases









