Wordlio vs DocUs
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Wordlio
Expand your English vocabulary with spaced repetition. Add words via text, voice, or photo, or import lists. Explore themed packs and review at optimal times for long-term retention. Enjoy a simple, motivating learning experience.
- Spaced repetition learning
- Add words by typing, voice, or photo
- Import full word lists
- Themed word packs
- Smart review scheduling
- Simple and motivating design
Read full descriptionHide full description
Wordlio helps you learn English easily and effectively with spaced repetition. Add words by typing, voice, or photo, or quickly import full word lists. Explore themed word packs for every level, and review words at the right time to remember them longer. With a simple design and motivating features, Wordlio makes expanding your English vocabulary easy and enjoyable.
DocUs
Read full descriptionHide full description
DocUs turns the moment you reach for your phone into Step 1 practice. Pick the apps that pull you away. When you open one, DocUs asks you a single USMLE-style question first. Answer it right and the app unlocks for the time you chose (5, 15 or 30 minutes). Get it wrong and you read the explanation, take a short break, and try another. WHAT YOU GET • 500+ Step 1 multiple-choice questions with full explanations, across 15 subjects • Questions you miss come back sooner; ones you know wait days (spaced repetition) • More questions from the subjects you're weakest in • Streaks, a streak calendar and stats by subject • One emergency skip a day, for when you really need your phone HOW IT WORKS DocUs uses Apple's Screen Time to block the apps you choose. You need to allow Screen Time access once. DocUs never sends anywhere which apps you picked, and never sees what you do in them: Apple gives it tokens, and app names appear only on the block screen on your iPhone. PRIVATE BY DESIGN No account. No ads. No tracking. Your study history is saved on your iPhone and in your private iCloud, so it comes back if you reinstall or switch iPhones. Usage data with a random ID (no name or email) helps improve DocUs; it's on by default and you can turn it off in Settings. SUBSCRIPTION DocUs requires a subscription: $79.99 per year or $14.99 per month (prices may vary by country). Payment is charged to your Apple ID at confirmation. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in Settings → [your name] → Subscriptions. Terms of Use: https://docus.themartian.app/terms Privacy Policy: https://docus.themartian.app/privacy Questions adapted from ScholarRx Bricks (exchange.scholarrx.com), licensed CC BY-SA 4.0. ScholarRx does not endorse DocUs. DocUs is a study aid, not medical advice.
Screenshots
Verdict
The clearest difference is in-app purchases: Wordlio at none against DocUs's 3. DocUs's advantage is update cadence (every 2 days vs every 6 weeks). 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. DocUs sells 3 in-app purchases, starting at $14.99 per month. Wordlio asks for nothing beyond the download.
Wordlio ships an update every 6 weeks, DocUs every 2 days. The most recent releases landed on October 25, 2026 and November 1, 2026 respectively.
| Parameter | Wordlio | DocUs |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (5 ratings) — better | — |
| Number of ratings | 5 — better | — |
| Update frequency | Every 6 weeks | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 18.2 | 18.0 — better |
| Further details — not scored | ||
| Size | 7 MB | 19 MB |
| Age rating | 4+ | 17+ |
| Developer | Tatiana Knysh | Jerry Fanelli |
In-app purchases
Wordlio
No in-app purchases
DocUs
- DocUs Monthly$14.991 Month
- DocUs Yearly$49.991 Year
- DocUs Yearly$79.991 Year









