Devoro vs ChessScroll
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Devoro
This app trains your focus using Rapid Serial Visual Presentation (RSVP) to help you read more effectively. It allows you to learn about any topic with AI-generated articles and quizzes, or import your own content to read at adjustable speeds.
- RSVP focus training
- AI-generated articles on any topic
- Comprehension quizzes
- Import URLs, PDFs, EPUBs, text
- Adjustable reading speed (50-1500 WPM)
- Multi-device sync
- Shareable certificates
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Your attention is under siege. Every scroll trains your brain to expect novelty faster — and focus less. Devoro flips the script: same phone, same spare moments, but now they train your focus instead of destroying it. Devoro uses RSVP (Rapid Serial Visual Presentation) to display one word at a time at a single fixed point. Your eyes can't wander. Your attention has exactly one target. It's meditation for reading — and when your mind drifts and you rewind, that's not failure. That's a rep. LEARN Curious about something? Type any topic — philosophy, nutrition, how satellites work — and Devoro generates articles just for you. Every article ends with a quiz to test retention and lock in what you learned. Curiosity is the fuel. Attention is the muscle. PRACTICE Not sure where to start? Browse 200+ pre-built articles across 15 topics and build your focus habit with guided speed reading sessions. Quizzes after each article prove you retained it — not just read it. READ Bring your own content. Paste a URL, upload a PDF or EPUB, or drop in plain text. Devoro serves it back at whatever pace you choose — from a comfortable 200 WPM to a blazing 1500. WHAT MAKES DEVORO DIFFERENT: FOCUS TRAINING Most reading apps help you go fast. Devoro trains you to stay focused. The effort isn't a bug — it's the entire point. Five minutes a day on your commute, lunch break, or before bed. Replace the scroll with a training rep. FEATURES • Adjustable speed: 50–1500 WPM • Comprehension quizzes after every article • AI-generated articles on any topic • Import URLs, EPUBs, PDFs, and plain text • Multi-device sync • Beautiful shareable certificates for meaningful speed & retention milestones • 4 themes: dark, midnight, sepia, light • Supports 12 languages Train your attention. Feed your curiosity. Terms of Service: https://devoro.app/en/terms/ Privacy Policy: https://devoro.app/en/privacy/
ChessScroll
This app locks distracting applications behind chess puzzles. Solve a puzzle to earn minutes of screen time for your chosen apps. It aims to reduce screen time by integrating practice into existing habits.
- App locking with chess puzzles
- Customizable scroll time per puzzle
- Offline puzzle functionality
- Personalized puzzle difficulty
- Privacy-focused, no account needed
- Reduces screen time through habit integration
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Your feed costs a move now. ChessScroll seals the apps that eat your evenings — Instagram, TikTok, YouTube, whichever you choose — behind a chess puzzle at your level. Solve it and you earn minutes of scroll. Fail it and the position waits. That's the whole app. That's the whole deal. THE DEAL 1 puzzle = minutes of scroll. You set the exchange rate. HOW IT WORKS 1. Seal your apps. Pick the ones that eat you. 2. Reach for one, and a puzzle appears instead. 3. Solve it. The app opens and your clock starts running. 4. Minutes run out mid-scroll? In chess we call that flagging. Solve another. WHY IT WORKS You already reach for your phone dozens of times a day. ChessScroll doesn't fight that urge — it reroutes it. Every reach becomes one tactic at your level: twenty to forty seconds, and a real fight. It's the training every coach prescribes and nobody actually does, attached to a habit you already have. TWO NUMBERS, FACING EACH OTHER — Your puzzle rating, climbing. — Your daily screen time, falling. Everything else is supporting cast. REAL PUZZLES, AT YOUR LEVEL Nearly fourteen thousand positions from real games, each one rated by the players who tried it before you, and served at your rating rather than under it, so the rating you build is earned. Works fully offline. From 400 to 2700, the puzzle fits. THE CLIMB Fourteen chapters, one for each master: Morphy, Anderssen, Steinitz, Lasker, Capablanca, Alekhine, Botvinnik, Nezhmetdinov, Tal, Petrosian, Spassky, Fischer, Karpov, Kasparov. Every six puzzles you solve lays a stone on their road, and the one you solved at midnight to get into Instagram counts the same as the one you chose to play. The road stops at twenty-eight of their own games, and every one you solve goes into your album as a card. You never have to open the tab for it to move. NO NEW ADDICTION Training sessions end by design. No infinite puzzle feed, no guilt notifications, no nagging. Paul Morphy said in 1859 that chess should never engross the mind. We're inclined to agree. PRIVACY Your app choices and screen-time data never leave your device — Apple's Screen Time framework enforces that by design. No account needed. MEMBERSHIP ChessScroll requires a membership: yearly with a 7-day free trial, or monthly. Subscriptions auto-renew until cancelled in Settings. Terms: https://chessscroll.com/terms — Privacy: https://chessscroll.com/privacy Earn your scroll.
Screenshots
Verdict
The clearest difference is review sentiment: Devoro at 100% against ChessScroll's 0%. Devoro also leads on rating (5.0 vs 3.0) and monetization model (freemium vs subscription). On price, ratings volume, update cadence and ads 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. Devoro sells 2 in-app purchases, starting at $4.99 per month and ChessScroll sells 2 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.
Devoro holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 2 respectively. Written reviews point the same way: 100% of Devoro's written reviews are positive against 0% of ChessScroll's.
Devoro ships an update fortnightly, ChessScroll weekly. The most recent releases landed on September 24, 2026 and October 3, 2026 respectively.
| Parameter | Devoro | ChessScroll |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | 3.0 (2 ratings) |
| Positive reviews | 100.0% of reviews — better | 0.0% of reviews |
| Number of ratings | 2 | 2 |
| Update frequency | Fortnightly | Weekly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium — better | Subscription |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 16.4 — better | 17.0 |
| Further details — not scored | ||
| Size | 110 MB | 100 MB |
| Age rating | 4+ | 4+ |
| Developer | Kaya Aykut Cesur | MICHAŁ ROSTKOWSKI |
Customer experience
Devoro
ChessScroll
In-app purchases
Devoro
- Devoro Monthly7 Days trial$4.991 Month
- Devoro Yearly$49.991 Year
ChessScroll
- Monthly Membership$7.991 Month
- Annual Membership3 Days trial$39.991 Year









