Lightmark vs Day100
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Lightmark
This app encourages honest self-reflection by allowing users to record thoughts, emotions, and memories without the ability to edit entries after submission. It supports text, voice, photos, and videos, offering a multi-sensory journaling experience. A unique visual timeline helps users see their journey over time.
- Uneditable entries
- Text, voice, photo, and video recording
- Tag system for organization
- Annual 'Lightmap' visualization
- Daily timeline archive
- Minimalist interface
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Some diaries are written just for yourself. Some moments are meant to be recorded as they truly are. No need for perfection, no need to revise. Writing who you are at that moment is an honest act of existence. Lightmark is a diary app that does not allow editing after writing. It blends a sense of time with emotional expression, gently guiding you to meet yourself. 【 Philosophy · Faithful to the Present 】 Lightmark’s writing approach is inspired by the psychological concepts of “non-judgmental writing” and “immediate recording.” Once submitted, your words cannot be changed—not to limit you, but as a gentle exercise: * Accept your emotions instead of adjusting them; * Capture your thoughts as they were, not rewritten by later understanding; * Let go of “right or wrong” and “perfection,” leaving only your true self. Every Lightmark entry is an echo through time and space. 【 Recording Methods · Multi-Sensory 】 Your feelings aren’t only expressed in words. Lightmark supports multiple sensory recording options, letting you capture emotions naturally: * Text Diary: Quietly write and record inner moments; * Voice Diary: No need to organize language, just speak; * Photo Capture: One image records the world you see; * Video Clips: The authentic sound of life, the most vivid memories; * Tag System: Seamlessly insert tags anywhere in text, freely create multi-level structures (e.g., #emotion/happy, #life/family) to lightly organize your diary. Whether it’s a midnight monologue, a morning ray of light, or a fleeting tear, you can collect it your way. 【 Annual Lightmap · See Your Journey 】 Lightmark’s unique “Lightmap” forms your year in a dot matrix. Each day you write sends ripples across the map. * The more you write, the brighter that day’s light point shines; * You can add marks for special days (Unlock this feature by purchasing the full version.). The Lightmap doesn’t tell you which days you “missed” writing and won’t push you to check in. Instead, it gently shows which days were quiet or full of emotion. It’s the path you’ve walked with yourself—a commemorative map left by time. 【 Timeline Diary · Your Life Chronicle 】 Lightmark uses a “one page per day” design, automatically gathering all texts, photos, voice recordings, and videos of the day into time slices—your daily archive. You’ll find life needs no polish; just capture the moment, and time will weave your story. 【 Design Philosophy · Simple · Gentle 】 Lightmark avoids complex categories, using tags for light management, keeping only the essence of “recording.” You’re not writing tasks, but your heart’s voice. * Minimal interface for immersive writing * No distractions, no ads, no popups * Supports dark mode, fitting the quiet of night 【 Who is it for? 】 * People who want to keep diaries but can’t stick with it * People who want to record emotions but don’t know where to start * Those who love the purity of paper diaries but want better saving and searching * Anyone wanting to practice self-acceptance without being trapped by “perfection” Terms of Use: https://app.qlulu.fun/termsofuse Privacy Poclicy: https://app.qlulu.fun/privacy
Day100
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[하루 5분이면 됩니다.] 거창한 목표를 세우고 작심삼일로 끝났던 경험, 다들 있으시죠? Day100은 그런 분들을 위해 만들어졌습니다. 완벽한 계획이 아니라 오늘 할 수 있는 작은 한 가지에 집중하는 거예요. 어떻게 다른가요? 매일 아침, 당신에게 딱 맞는 작은 챌린지 하나를 제안드립니다. 평균 5분이면 충분한 것들이에요. 헬스장에 등록하라는게 아니라 "계단으로 한 층만 올라가기" 같은 거죠. 중요한 건, 우리는 당신을 믿는다는 겁니다. 완료 인증 사진도, 체크인 증명도 필요 없어요. 스스로 체크하면 됩니다. 왜냐고요? 이건 남에게 보여주기 위한 게 아니라 당신 자신을 위한 것이니까요. [6가지 삶의 영역] 챌린지는 몸·마음·관계·공간·시간·영혼, 이렇게 6가지 영역에서 골고루 나옵니다. 어떤 날은 "점심 먹고 5분 산책하기"가 될 수도 있고, 다른 날은 "감사한 사람에게 메시지 하나 보내기"가 될 수도 있어요. 어제 운동했으니까 오늘은 정리정돈, 내일은 명상... 이런 식으로 삶의 여러 부분이 조금씩 나아집니다. [이런 분들이 사용하고 있어요] 20-30대 직장인들이 가장 많이 쓰시는데요, 취준생들도 많아요. 큰 목표 앞에서 막막했던 분들, 완벽주의 때문에 시작도 못했던 분들이 "아, 이 정도면 할 수 있겠네"라며 시작하시더라고요. 주요 기능 간단한 몇 가지 질문으로 당신의 성향을 파악합니다. 탐험가형인지, 계획가형인지에 따라 챌린지 스타일이 달라져요. 매일 간단한 체크인 질문으로 오늘 컨디션을 물어보고, AI가 그에 맞춰서 챌린지를 조정합니다. 무리하지 않는 게 중요하니까요. 100일간의 기록을 보면서 "내가 이만큼 했구나" 하는 뿌듯함도 느낄 수 있고요. 곧 비슷한 목표를 가진 사람들과 함께할 수 있는 버디 시스템도 추가될 예정입니다. [솔직히 말씀드리면] Day100이 당신의 인생을 완성시키진 않을 거예요. 하지만 100일 후엔 분명 달라져 있을 겁니다. 조금 더 움직이고, 조금 더 정리되고, 조금 더 감사하게 된 자신을 발견하실 거예요. 완벽을 기다리지 마세요. 어제보다 조금 나은 오늘이면 충분합니다. 지금 시작해보는 건 어떨까요? 5분이면 됩니다.
Screenshots
Verdict
The clearest difference is update cadence: Lightmark at every 3 weeks against Day100's every 3 months. Day100's advantage is iOS requirement (15.0 vs 18.0). 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. Lightmark sells 3 in-app purchases, starting at $1.99 per month and Day100 sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Lightmark ships an update every 3 weeks, Day100 every 3 months. The most recent releases landed on October 24, 2026 and September 19, 2026 respectively.
| Parameter | Lightmark | Day100 |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (9 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 9 — better | — |
| Update frequency | Every 3 weeks — better | Every 3 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 18.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 14 MB | 58 MB |
| Age rating | 4+ | 4+ |
| Developer | 璐 秦 | StellaDev Inc. |
In-app purchases
Lightmark
- Monthly$1.991 Month
- Annual$12.991 Year
- Lifetime$14.99
Day100
- Service Access$19.99









