NBack vs Lensly
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
NBack
This scientifically validated cognitive training app is designed to enhance focus, memory, and problem-solving skills. It utilizes the dual n-back method, proven to increase fluid intelligence, offering a challenging yet rewarding experience for those seeking mental improvement.
- Scientifically validated cognitive training
- Dual n-back method for fluid intelligence
- Boosts memory and focus
- Enhances problem-solving skills
- Progress tracking with data-backed gains
- Customizable user experience
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The N-Back Challenge isn’t just a game. It’s a scientifically validated cognitive upgrade — engineered to boost your IQ in just 7 hours total. Built on Research. Designed for Results. Forget brain-training fluff. This is dual n-back — the only method proven to actually increase fluid intelligence, with results published in New York Times, The Wall Street Journal and other top journals. But here’s the truth: It’s brutal. It’s exhausting. It works. If you can complete 20 sessions, you may unlock: • Sharper memory • Faster learning • Enhanced problem-solving • Stronger focus under pressure Track your progress. See real gains — backed by data. All within a beautifully designed, customizable experience. This is not for everyone. But if you’re hungry to evolve, The Challenge awaits. This app is only available in English. Privacy Policy: https://boostiq.app/privacypolicy.html Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Lensly
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Life moves fast. Lensly gives you a quiet moment to pause, look back at your day, and process what you're feeling. • Check In Your Way Choose a lens — Gratitude, Energy, Wellbeing, Progress, Learning, or Challenge — to guide your reflection. Or skip the structure and free write. • 600+ Thoughtful Prompts Never stare at a blank page. Browse a curated library of prompts designed to meet you wherever you are — in any mood, at any stage of life. • A Friend Who Listens As you write, Lensly responds — not with advice, but with warmth and curiosity. It reflects your words back, gently asks follow-up questions, and helps you go a little deeper. • See the Meaning Behind Your Words After each entry, receive a gentle insight, a key takeaway, and a piece of inspiration drawn from what you shared. Turn words into clarity. • Set the Mood with Ambient Sounds Write to the sound of rain, a crackling fire, or soft noise. Ambient audio helps you settle in and stay present while you reflect. • Build the Streak, Keep the Habit Track your daily check-ins on a visual calendar. Watch your current streak grow. Set a daily reminder so reflection becomes as natural as brushing your teeth. Whether you're working through a hard season, cultivating gratitude, or simply trying to understand yourself better — Lensly is your space. Find clarity in chaos. Find calm in the noise. Privacy policy: https://trylensly.app/privacy Terms of use: https://trylensly.app/terms
Screenshots
Verdict
The clearest difference is update cadence: Lensly at every 10 days against NBack's every 2 months. On price, ads, in-app purchases and device support 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. NBack sells 2 in-app purchases, starting at $1.99 per month and Lensly sells 2 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.
NBack ships an update every 2 months, Lensly every 10 days. The most recent releases landed on October 30, 2026 and November 5, 2026 respectively.
| Parameter | NBack | Lensly |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 2 months | Every 10 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.1 | 15.1 |
| Further details — not scored | ||
| Size | 44 MB | 83 MB |
| Age rating | 4+ | 4+ |
| Developer | eric cesar | Thang Pham |
In-app purchases
NBack
- Monthly membership$1.991 Month
- Yearly membership$14.991 Year
Lensly
- Pro monthly$6.991 Month
- Pro yearly3 Days trial$39.991 Year
