Log vs Logline
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Log
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Log is a thought log for people who turn ideas into reality. Capture an idea in one line. Not a record, but a log for evolution. You wrote it down, then lost track of it. Ideas pile up, but you can't tell what moved forward and what stalled. Log keeps your thinking not as scattered dots, but as a history of change. CAPTURE IN ONE LINE Save a thought before it fades, with the fewest taps. Organize later. Type #tags in the title and they are added automatically. CONNECT YOUR THINKING Link related logs and keep a thought history (v1 → v2 → v3), so you always know where an idea came from and where it went. DIG DEEPER WITH AI Chat with Claude, ChatGPT or Gemini about one log or a bundle of logs. Save a good reply back as a new log with one long-press. AI ideas suggests three next steps: dig deeper, branch out, or move to the next stage. SIX LAYERS OF THINKING Idea → Output → Build → Launch → Review → Reach. Give each log a layer and see how far each thought has grown. SPIRAL GRAPH™ See the density, depth and reach of your thinking on Log's own logarithmic spiral. Tap a layer to open its logs. WRITE MATH Wrap text in $ to show it as math, in your notes and in AI replies. Great for math and physics study logs. EXPORT AS MARKDOWN Export a whole folder as a ZIP of Markdown files, one note per log, ready for Obsidian and other apps. Back up and restore everything with JSON. PRIVATE BY DESIGN Your logs stay on your device. Log has no server and never uses your logs for training. Lock the app with Face ID. AI features use your own API key, stored in the iOS Keychain and sent only to the AI provider you choose. PRICING Free: up to 3 folders and 50 logs, with every feature. Pro: unlimited folders and logs. One-time purchase, no subscription.
Logline
This app allows you to record your thoughts, actions, and future plans in a simple, chronological timeline. It offers unlimited free recording, offline access, and powerful search capabilities. Export your data in various formats and sync across devices with an optional subscription.
- Chronological timeline recording
- Unlimited free note-taking
- Offline access
- Full-text search and filtering
- Markdown, JSON, CSV export
- Optional Mac sync
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思ったこと、やったこと、これからやること。フォルダに振り分けることも、どこに置くか迷うこともなく、書いた順にただ並びます。Logline は、一日をそのまま一本の線として残すための記録アプリです。 - 書くことは、ずっと無料 記録の作成・編集・削除と、過去ログの閲覧に上限はありません。「30日より前は読めません」のような制限も入れません。 - 端末の中に残る 記録は端末の中のデータベースに保存されます。同期を使わないかぎり、書いたものがこの端末から出ることはありません。電波がなくてもそのまま書けます。 - ノートとタスクは地続き チェックボックスを付けられる記録が「タスク」です。予定を立てる道具ではないので、繰り返しもリマインダーもありません。書く、終わったらチェックする、あとで読み返す。それだけです。 - あとから探せる 全文検索と、種類(ノート/タスク)・タグでの絞り込み。過去の記録は遡って読み込めます。 - 持ち出せる Markdown / JSON / CSV で書き出せます。書いたものは、いつでも自分の手元に取り出せます。 - Mac とつながる Logline Sync に加入すると、iPhone で書いたものが Mac のタイムラインにも並びます。オフラインで書いたぶんは次につながったときに合流し、同じ記録を両方で直したときは新しい編集が残ります。 - プラン Logline(無料) 記録は無制限。全文検索、タグは5つまで、ライトモードとデフォルト配色。 Logline Plus(買い切り ¥1,200) タグ無制限、ダークモードと配色(オーシャン/サクラ)、画像の添付、書き出し。 Logline Sync(サブスクリプション) Plus のすべてに加えて、Mac と iPhone の自動同期。 - サブスクリプションについて Logline Sync は自動更新サブスクリプションです。 ・Logline Sync(月額): ¥300 / 1か月 ・Logline Sync(年額): ¥3,000 / 1年 お支払いは購入確定時に Apple ID アカウントに請求されます。現在の期間が終了する24時間前までに自動更新をオフにしないかぎり、サブスクリプションは自動更新され、同額が請求されます。購入後は App Store のアカウント設定からいつでも管理・解約できます。 解約しても、これまでに書いた記録が消えることはありません。 利用規約(EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Logline の利用規約: https://loglineweb.netlify.app/terms.html プライバシーポリシー: https://loglineweb.netlify.app/privacy.html
Screenshots
Verdict
The clearest difference is iOS requirement: Log at 13.0 against Logline's 15.1. On price, update cadence, ads and in-app purchases 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. Log sells 1 one-off in-app purchase and Logline sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.
Log ships an update every 4 days, Logline every 5 days. The most recent releases landed on October 15, 2026 and October 12, 2026 respectively.
| Parameter | Log | Logline |
|---|---|---|
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| Update frequency | Every 4 days — better | Every 5 days |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 13.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 40 MB | 23 MB |
| Age rating | 4+ | 4+ |
| Developer | mika masuda | Jun Hayashi |
In-app purchases
Log
- Log Pro$5.99
Logline
- Logline Sync$1.991 Month
- Logline Sync$19.991 Year
- Logline Plus$6.99









