Numms vs Readonly
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Numms
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Numms is a notepad for numbers, it has a built-in calculator, unlimited offline storage, has dark mode and it is fully responsive
Readonly
Save articles from other apps to read later in a comfortable, distraction-free environment. Organize your saved content with tags, highlight key passages, and add notes for deeper comprehension. Customize the reading experience with various themes and layout adjustments.
- Quickly save articles from other apps
- Highlight text and add notes
- Organize articles with tags
- Customize reading themes and layout
- Synchronize data via iCloud
- Export articles in Markdown format
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"Readonly" is a simple and easy to use read later app. There are not too many complicated features, just to give you a comfortable place to read your saved articles. Featured Functions - Highlight & Notes While reading, use different colors to highlight text, mark key points for easy review later. You can also add notes to the highlights, recording your thoughts and insights, making each reading session more rewarding. - Theme Switching We have carefully prepared some themes suitable for reading, choose your favorite from it, relax your eyes and focus on reading. - iCloud Synchronization Data synchronization to the cloud, no longer worry about data loss. - Tag Management Tag articles, categorize and manage them, keep everything in order. - Layout Adjustment Select fonts, adjust spacing, you can finely control the layout of the article to make reading more comfortable. - Quick Save Quickly save articles in other apps through sharing operations. - Export Articles Export your saved articles in Markdown format. —————————— Contact Us: brkchen@icloud.com
Screenshots
Verdict
The clearest difference is in-app purchases: Numms at none against Readonly's 2. Readonly's advantage is update cadence (every 3 weeks vs every 2 months). On price, ads, device support and iOS requirement 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. Readonly sells 2 one-off in-app purchases. Numms asks for nothing beyond the download.
Numms ships an update every 2 months, Readonly every 3 weeks. The most recent releases landed on September 17, 2026 and September 30, 2026 respectively.
| Parameter | Numms | Readonly |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.4 (15 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 15 — better |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Requires iOS | 15.6 — better | 16.0 |
| Further details — not scored | ||
| Size | 40 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Lummen | 龙 陈 |
In-app purchases
Numms
No in-app purchases
Readonly
- Permanent Purchase(iOS)$2.99
- 永久购买（macOS）$2.99
