Chat Memo vs Stairstep
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Chat Memo
A straightforward note-taking app designed for intuitive, one-line entries. It offers widget support for home screen access, character counting, and easy line-by-line copying. The app prioritizes a clean, ad-free experience for efficient memo management.
- One-line memo registration
- Widget support
- Character counting
- Line-by-line selection and copying
- Passcode protection
- Image registration
- 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)
Stairstep
View and inspect 3D models in STEP file format. Explore models with intuitive orbit, pan, and zoom controls, aided by a reference grid and scale bar. Access detailed geometry information including vertices, triangles, and dimensions.
- 3D model viewing
- Orbit, pan, and zoom controls
- Reference grid
- Scale bar for size tracking
- Geometry inspector
- Dimension reporting
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Stairs views STEP files. Open a model and inspect it in 3D — orbit, pan, and zoom, with a reference grid and a scale bar to keep track of size. Drag to orbit the model and scroll or pinch to zoom; the scale bar updates to match. The toolbar fits the model back into view and reveals an inspector that reports the geometry — vertices, triangles, materials, and overall dimensions.
Screenshots
Verdict
The clearest difference is rating: Stairstep at 5.0 against Chat Memo's 4.3. Chat Memo's advantage is update cadence (weekly vs monthly) and ratings volume (9 vs 1). On price, ads, in-app purchases and monetization model 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.
Stairstep holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: Chat Memo has 9 ratings behind it against 1, so its average is the more settled of the two.
Chat Memo ships an update weekly, Stairstep monthly. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.
| Parameter | Chat Memo | Stairstep |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (9 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 9 — better | 1 |
| Update frequency | Weekly — better | Monthly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Requires iOS | 15.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 20 MB | 23 MB |
| Age rating | 4+ | 4+ |
| Developer | Naoyuki Rikiji | Twarge LLC |
Customer experience
Chat Memo
Stairstep
In-app purchases
Chat Memo
No in-app purchases
Stairstep
No in-app purchases









