ReadOne vs Flat RSS
Price, ratings, monetisation and update history for both apps, side by side ā with what reviewers say about each.
ReadOne
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ReadOne is a clean, minimal reader designed for focused reading. Gather your favorite RSS feeds, articles, and newsletters in one beautiful place. Free from clutter, distractions, and algorithms. Key Features: - Distraction-free reading interface with customizable typography. - Offline support to save articles for later. - Sync seamlessly across all your devices. - Organize your content with tags and custom folders. - Smart reading progress tracking.
Flat RSS
Consolidate all your reading, watching, and listening into one calm, chronological feed. Save articles, videos, and podcasts from various sources, with offline access and cross-device sync. Enjoy a private, ad-free experience.
- Unified feed for RSS, podcasts, videos, social media
- Save articles, videos, and links to Stash
- Offline access for saved content
- Cross-device iCloud sync
- Ad-free and privacy-focused experience
- Customizable feed filtering
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Flat is one calm place for everything you read, watch, and listen to. Flat brings RSS, podcasts, videos, social feeds, and saved links together in one quiet place. No unread counts. No pressure. No algorithmic ranking. FOLLOW YOUR FAVORITE SOURCES ⢠RSS, Atom, JSON feeds, podcasts, YouTube, Reddit, Mastodon, Bluesky, and more ⢠Paste a URL or keyword and Flat finds the right source ⢠Browse a clean chronological timeline ⢠Filter by source, focus or hide feeds, and filter out unwanted keywords SAVE ANYTHING ⢠Save articles, videos, podcasts, and links to your Stash ⢠Save links from any app, browser, or Flat browser extension ⢠Auto-stash items from feeds you never want to miss ⢠Keep saved items until you are ready to come back LISTEN AND WATCH ⢠Play podcasts and videos with playback progress synced across devices ⢠Build your own audio and video queue ⢠Use chapters and a sleep timer AVAILABLE EVERYWHERE ⢠iPhone, iPad, and Mac ⢠Automatic iCloud sync across devices ⢠Offline access for saved articles, audio, and video podcasts PRIVACY FIRST ⢠No ads ⢠No tracking ⢠No account required ⢠Your reading data is not used for advertising FLAT PRO Start free with Stash, saved links from other apps, and up to 30 feeds. Upgrade to Flat Pro for unlimited feeds, so new articles, podcasts, and videos from all your favorite sources appear automatically in your timeline. A free trial is available. Just your content, at your pace. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://justasimple.app/privacy
Screenshots
Verdict
The clearest difference is in-app purchases: ReadOne at none against Flat RSS's 3. Flat RSS's advantage is iOS requirement (18.6 vs 27.0). On price, update cadence, ads and device support there is nothing between them.
Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS
Both are free to download. Flat RSS sells 3 in-app purchases, starting at $3.99 per month. ReadOne asks for nothing beyond the download.
ReadOne ships an update every 6 days, Flat RSS every 10 days. The most recent releases landed on October 14, 2026 and October 2, 2026 respectively.
| Parameter | ReadOne | Flat RSS |
|---|---|---|
| Price | Free | Free |
| Positive reviews | ā | 100.0% of reviews |
| Update frequency | Every 6 days ā better | Every 10 days |
| Ads | No | No |
| In-app purchases | No ā better | Yes |
| Monetization | ā | Freemium |
| Devices | iPhone, iPad, Mac, Vision Pro ā better | iPhone, iPad, Mac |
| Requires iOS | 27.0 | 18.6 ā better |
| Further details ā not scored | ||
| Size | 8 MB | 19 MB |
| Age rating | 4+ | 17+ |
| Developer | Hongbo Ji | Rene Fischer |
In-app purchases
ReadOne
No in-app purchases
Flat RSS
- Flat Pro Monthly7 Days trial$3.991 Month
- Flat Pro Yearly7 Days trial$19.991 Year
- Flat Pro Lifetime$44.99









