Astronaut's Journal vs Simple Diary
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Astronaut's Journal
This app offers guided journaling prompts and structured journals to explore your inner self and outer life. It includes sections for clearing your mind, practicing gratitude, interpreting dreams, capturing ideas, tracking goals, and celebrating achievements.
- Guided journaling prompts
- Inner self exploration
- Outer life investigation
- Gratitude journaling
- Dream interpretation
- Goal setting and tracking
- Idea capture
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Astronaut's Journal consists of two categories of journals, and an additional "Discover" section where you can find various stimulating questions to inspire you to write. The first three journals are for investigating your life as it relates to you. The last three journals are for investigating your life as it relates to the outside world. _________________________________________________ INNER SELF: FREE FLOW JOURNAL: designed to help you clear your mind by writing two pages without pausing everyday. You will be alerted when you complete two pages. GOOD THINGS JOURNAL: with Good Things Journal, take a note of the good things in your life that you're grateful for. DREAM JOURNAL: dive into the symbols of your unconscious mind that leak in your sleep. Notice the recurring themes. _________________________________________________ OUTER SELF: IDEAS JOURNAL: note down your spontaneous ideas about work, or snippets for your creative projects. Daily, weekly, or monthly. GOALS JOURNAL: keep your short and long term goals here. Plan them out, and strategize on how to get results in multiple ways. When you accomplish a goal, you can move it to Achievements Journal by swiping left. ACHIEVEMENTS JOURNAL: keep these to remind you in the future what you're capable of. Note down what worked and what didn't, together with crucial steps that resulted in success. _________________________________________________
Simple Diary
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Forget the pressure of writing long entries. This app makes journaling simple and fun, letting you quickly jot down a single thought, a quick feeling, or the day's highlight. It's designed to fit seamlessly into your busy life, helping you build a positive habit without the fuss. "What's on your mind today?" "How was that meeting?" "Did something make you smile?" Your one-liners become a personal timeline, a digital scrapbook of your journey. Easily look back at your entries through a clean calendar view or a simple list, and rediscover those small, significant moments that make up your unique story. It's about making mindfulness easy and accessible. If you're looking for a simple way to reflect, track your mood, or just keep a quick record of your days, the "One-Liner Journal" is perfect for you. Start capturing your story, one line at a time!
Screenshots
Verdict
The clearest difference is price: Simple Diary at Free against Astronaut's Journal's $9.99. Simple Diary also leads on update cadence (every 3 months vs every 7 months). Astronaut's Journal's advantage is ads (none vs shown). On in-app purchases, device support and iOS requirement 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
Simple Diary is free to download; Astronaut's Journal costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Astronaut's Journal ships an update every 7 months, Simple Diary every 3 months. The most recent releases landed on October 24, 2026 and October 6, 2026 respectively.
| Parameter | Astronaut's Journal | Simple Diary |
|---|---|---|
| Price | $9.99 | Free — better |
| Rating | 4.9 (36 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 36 — better | — |
| Update frequency | Every 7 months | Every 3 months — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 16.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 30 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | Deniz Dulat | Kana Uchida |
In-app purchases
Astronaut's Journal
No in-app purchases
Simple Diary
No in-app purchases
Questions
Is Astronaut's Journal free?
Is Simple Diary free?
Do Astronaut's Journal or Simple Diary have ads?
Which is updated more often, Astronaut's Journal or Simple Diary?
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