Prilog vs Diary
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Prilog
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Your journal belongs on your device, not on someone else's server. Prilog stores everything only on your device and in your own Google Drive. No third-party servers, no AI training, no anonymous analytics. Core Values • Local first: All data stays on your device • Double lock: App lock plus per-entry lock • Your own Google Drive sync: Automatic backup across your devices, nowhere else • Offline: Write and search with no internet connection Key Features • Attach photos, location, voice, and video • Tags and full-text search • Reflection cards: Automatically resurface entries from N weeks, months, or years ago • Export as PDF or plain text • 21 languages supported • Automatic sync via Google Drive Who It Is For • Anyone uncomfortable handing their most private writing over to server-based diary services • People who want to make journaling and reflection a real habit • Those who want full control over their own data Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Diary
A private journaling app designed for reflection and personal growth. It offers a peaceful space to record daily thoughts, set simple goals, and reflect without pressure. A gentle cat companion is present throughout your journaling experience.
- Private journaling
- Goal setting
- Daily reflection
- Cat companion
- No pressure or streaks
- Ad-free experience
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Diary – Hope Tree A quiet place to write, reflect, and grow — with a gentle cat by your side. Diary – Hope Tree is a simple, private growth diary for everyday life. There’s no pressure to be productive, positive, or consistent. Just a calm space to show up as you are. Write a few words about your day. Note a small step toward something you care about — even if it’s for tomorrow. Reflect honestly, even when things feel hard. Nothing more is required. A gentle way to grow Diary — write what happened today, even the ordinary things Hope — keep a simple goal you’re growing toward Reflection — a few honest words are enough Action — note a small step, past or future Tool - to support the hope No streaks. No scores. No pressure to “do better”. A quiet companion Your cat doesn’t guide, judge, or demand anything. It simply stays with you — day by day — as you write and grow at your own pace. Private by design Private — your entries are yours No ads Nothing is shared This is your personal space. Always. For people who... Want to keep a diary without feeling guilty Prefer honesty over positivity Need a calm place during busy or difficult times Care about privacy and simplicity If you want a quiet place to exist, reflect, and grow — Hope Tree is here. It is a space for reflection, intention-setting, and gentle daily practices. Private by design Your entries are yours No ads No subscription required Nothing is shared Your diary stays personal, simple, and calm.
Screenshots
Verdict
The clearest difference is update cadence: Prilog at every 5 days against Diary's fortnightly. Prilog also leads on iOS requirement (13.0 vs 15.6). 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
Both are free to download. Prilog sells 4 in-app purchases, starting at $0.59 per month and Diary sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Prilog ships an update every 5 days, Diary fortnightly. The most recent releases landed on October 19, 2026 and October 28, 2026 respectively.
| Parameter | Prilog | Diary |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 5 days — better | Fortnightly |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 222 MB | 71 MB |
| Age rating | 4+ | 4+ |
| Developer | Sangseon Kim | Kam Hung Cheung |
In-app purchases
Prilog
- Monthly (iOS)$0.591 Month
- Monthly (macOS)$1.191 Month
- Lifetime (iOS)$8.00
- Lifetime (macOS)$12.00
Diary
- Hope Tree Companion Plus Lifetime$3.99









