Chat Memo vs Oneline (todo)
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Chat Memo
This simple memo app allows for intuitive, one-line note-taking with widget support for home screen access. It offers character counting, line-by-line selection for copy-pasting, and passcode protection for privacy. The app prioritizes ease of use with no advertisements.
- One-line memo registration
- Widget support
- Character counting
- Line-by-line selection and copy
- Passcode protection
- Strike-through for TODO lists
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Simple memo application. It is easy to use intuitively, writing one line at a time. Widget support allows you to put notes on your home screen. You can count the number of characters. You can select and copy notes line by line, so you can use it as a copy and paste book. There are no advertisements, and ease of use is our top priority. This is the author's own personal memo application. Features You can register memos one line at a time. The image can be registered. You can also use it as a TODO application because you can use a strike-through line. You can also delete one line at a time. You can also delete them all at once, so it's easy. You can select and copy one line at a time. A passcode can be set. Translated with www.DeepL.com/Translator (free version)
Oneline (todo)
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Stay organized and achieve more with Todoist.
Screenshots
Verdict
The clearest difference is update cadence: Oneline (todo) at every 2 days against Chat Memo's every 9 days. Oneline (todo) also leads on iOS requirement (13.0 vs 15.0). 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. Neither carries in-app purchases, so what you see is what you pay.
Chat Memo ships an update every 9 days, Oneline (todo) every 2 days. The most recent releases landed on November 13, 2026 and November 8, 2026 respectively.
| Parameter | Chat Memo | Oneline (todo) |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (9 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 9 — better | — |
| Update frequency | Every 9 days | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 22 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | Naoyuki Rikiji | Youngwon Seo |
In-app purchases
Chat Memo
No in-app purchases
Oneline (todo)
No in-app purchases
Questions
Is Chat Memo free?
Is Oneline (todo) free?
Do Chat Memo or Oneline (todo) have ads?
Which is updated more often, Chat Memo or Oneline (todo)?
Other comparisons
