Plog vs DailyMark
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Plog
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ๆฅ่จใใใใใฐใใใซๆฎใใ ็ฟๆใขใใชใ้ใใจใๆจๆฅใฎๆฅ่จใใใใงใใฆใใใ ใกใขใๆฎใใ ใใใพใจใใไฝๆฅญใฏAIใซใใพใใใ ๆธใใฎใ่ฆๆใงใใๅคใซๆฐๅใใชใใฆใใๅคงไธๅคซใ โโโโโโโโโโโโโโโ โ ใกใขใๆฎใใ ใ ๆใใคใใใใจใ1่กใงใใๅ็1ๆใงใใ ๆฅไธญใซใใฃใจๆฎใใฆใใใฐใใใใๆฅ่จใฎๆๆใซใ โ ใฆใฃใธใงใใใงใใฃใจๆ่ปฝใซ ใใผใ ็ป้ขใใใฏใณใฟใใใงใกใขใ ใขใใชใ้ใๆ้ใใใใใพใใใ โ ็ฟๆใๅฑใ ๆทฑๅคใฎใใกใซAIใๆฅ่จใ็ๆใ ๆ่ตทใใใใๆจๆฅใฎๆฅ่จใใงใใพใใใใจ้็ฅใงใๅฑใใ โ ๅ็ใๆฅ่จใซใชใ* ๆฎใฃใๅ็ใฎๅ ๅฎนใAIใ่ชญใฟๅใใๆ็ซ ใซใ ใใฉใณใใซ้ฃในใใฆใไธผใใใๆ ๆฏ่ฑใใชไธ็ฏใซๅคใใใพใใ โ ใใชใใใใๆไฝใซ* ไฝฟใ็ถใใใปใฉใAIใใใชใใฎๅฅฝใฟใๅญฆ็ฟใ ใ ใใ ใใ่ชๅใๆธใใใฟใใใใชๆฅ่จใซใชใฃใฆใใใพใใ โ ่คๆฐใฎในใฟใคใซใใ้ธในใ* ใจใใปใค้ขจใใฎใฃใซ้ขจใๅฐ่ชฌ้ขจใใใจใ ้ขจใชใฉใ ใใฎๆฅใฎๆฐๅใซๅใใใฆใๆฅ่จใฎใใผใณใๅคใใใใพใใ โ ใซใฌใณใใผใงๆฏใ่ฟใ ้ๅปใฎๆฅ่จใฏใซใฌใณใใผใใใ ใใคใงใไปฅๅใฎๆฅ่จใๆฏใ่ฟใใใจใใงใใพใใ โโโโโโโโโโโโโโโ *ไธ้จใฎๆฉ่ฝใฏProใใฉใณใงใๅฉ็จใใใ ใใพใ ใPlog Proใ ๆ้ก ยฅ400 / ๅนด้ก ยฅ4,000๏ผ7ๆฅ้็กๆใใฉใคใขใซ๏ผ โโโโโโโโโโโโโโโ ๆฅ่จใ็ถใใใใชใใฃใใในใฆใฎไบบใธใ ใๆธใใชใใฆใใๆฅ่จใใไฝใใพใใใ โโโโโโโโโโโโโโโ ใใฉใคใใทใผใใชใทใผ: https://plog-diary.pages.dev/privacy ๅฉ็จ่ฆ็ด: https://plog-diary.pages.dev/terms
DailyMark
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A diary that converses with the past. DailyMark is not a social feed and not a blog. The words here are not meant to be shown to anyone. They keep the facts that existed only in that moment, for the self yet to come. The moment you brace yourself to keep a diary, you start erasing the thoughts that embarrassed you, searching only for the good memories, and wearing yourself out trying to recall what you were too busy to write down last week. This app does not allow that. The immaturity, the hesitation, the contradiction โ each is engraved as the reality of that moment. So a record can be kept only as that same day's entry, and once engraved it can be neither edited nor deleted. This is not just a diary. It is a log that keeps the traces of change, so the future you can converse with it. [How a record works] - Text only (no photo, no video, no location) - Up to 400 characters per record - A URL may be included (URLs do not count toward the limit) - No editing, no deletion [Records per day] - Free: twice a day - Pro: five times a day (the same during the 14-day trial) This is not a place to write a great deal. It is a place to record how today, and how now, really was. [Asking your past self] Pose a question such as "What have I been worried about lately?" or "A year ago, what was on my mind?" and the AI reads back through your past records and answers in the voice of who you were then. - Free: 5 times in total - Pro: up to 30 times a month [A monthly reflection (Pro)] On Pro, the AI reads back over a past month's records and returns the recurring themes, the signs of change, and the lingering tone in a short passage. [The color of feeling] Each record's text is read for its emotional tendency, based on the circumplex model of affect, and kept quietly on the calendar as the color of that day. Looking back across time, a restless season or a calm one comes through, letting you review your past for yourself. [Exporting records (Pro)] Your own records can be exported at once in three formats โ JSON, Markdown, and CSV โ and saved through the share sheet (up to 3 times a month). [Privacy] - No ads, no third-party tracking - Records are not used to train AI (assured by the OpenAI and Anthropic API terms) - Each record is visible only to its author (Row Level Security) - Deleting the account removes the data permanently (within 30 days, with no recovery) [Requirements] - iOS 15 or later - iPhone only (iPad and Mac are not supported) - Japanese and English (following the device language) [Subscription] - DailyMark Pro: a monthly subscription, auto-renewing (see App Store for local pricing) - Cancellation is handled in the standard iOS Subscriptions settings - Pro features remain available through the paid period [Support and legal] For questions: kokujitsuki@five-birds.com Privacy Policy: https://five-birds.com/kokujitsuki/privacy Terms of Service: https://five-birds.com/kokujitsuki/terms Specified Commercial Transactions Act notice: https://five-birds.com/legal/tokushoho To keep, for the future self, the feeling and the thought and the hesitation that exist only in this moment. Not a life smoothed into order, but the process of change itself, engraved as it happens.
Screenshots
Verdict
The clearest difference is update cadence: Plog at every 3 days against DailyMark's weekly. DailyMark's advantage is iOS requirement (15.1 vs 18.6). On price, ads, in-app purchases 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. Plog sells 2 in-app purchases, starting at $1.99 per month and DailyMark sells 1 in-app purchase, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.
Plog ships an update every 3 days, DailyMark weekly. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.
| Parameter | Plog | DailyMark |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 days โ better | Weekly |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone | iPhone, iPod โ better |
| Requires iOS | 18.6 | 15.1 โ better |
| Further details โ not scored | ||
| Size | 5 MB | 40 MB |
| Age rating | 4+ | 4+ |
| Developer | Maho Hamasaki | five-birds.com |
In-app purchases
Plog
- Plog Pro ๆ้ก$1.991 Month
- Plog Pro ๅนด้ก7 Days trial$24.991 Year
DailyMark
- DailyMark ProMonthly14 Days trial$1.991 Month









