Comparison

Spritz App vs N

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Spritz App

This app transforms how you read digital content by displaying words rapidly in a single window, minimizing eye movement and fatigue. It helps users increase reading speed, comprehension, and retention, allowing them to consume more information efficiently.

Highlights
  • Rapid word display
  • Adjustable reading speed
  • Website content scanning
  • Reduced eye movement
  • Improved comprehension
  • Increased retention
Features
Read full description

Welcome to the future of reading! Spritz scans the written content of any website (including your favorite news sites) and visually reads it back to you at up to 1100 words per minute. The patented rapid fire, single word display feature is fully adjustable so you can begin training your brain to read up to 2x faster. Spritz helps busy professionals, avid readers and student alike to consume digital content more efficiently. It improves reading speed, comprehension and retention. By streaming individual words through an isolated display window, Spritz minimized eye movement and fatigue. When is the last time you tried a new way of reading? Keep up with the flood of news, be in the know, and breeze through long form content with ease. Start spend less time reading and more time doing! It's free to download the app. After registering, you can try Spritzing at any speed for 2 weeks. After the free 2 week trial, the price is $2.99/month or $29.99/year. What's your time worth?

About

N

This app offers a scientifically validated cognitive training program designed to enhance intelligence. It uses the dual n-back method to improve learning, reasoning, and problem-solving skills. Track progress, compete with friends, and customize your experience to boost cognitive abilities.

Highlights
  • Dual n-back cognitive training
  • IQ enhancement
  • Progress tracking and streaks
  • Social competition and leaderboards
  • Customizable voices and settings
  • Weekly habit option
Read full description

The N-Back Challenge provides a special type of cognitive training, “dual n-back,” that helps you raise your IQ in just a few minutes per day. Sounds implausible? The N-Back Challenge is based on a decade’s worth of scientific studies, published in top peer-reviewed journals, including Nature. (For more details, see https://nbackchallenge.com/science.) The catch? It’s no fun at all! Indeed, the training is designed to be maximally exhausting. If you are determined enough to make it through 20 sessions, however, science suggests that you stand to reap powerful benefits. Intelligence is the ultimate cognitive ability: You need it to learn, reason, solve novel problems, and see connections. Higher IQs have been linked to improved academic achievement, professional success, and even better health. Since it will take you just 7 hours, in total, to complete the N-Back Challenge, not much more than the length of a single school day, it may prove to be the best investment of time you’ve ever made! ------------------------------ SCIENTIFICALLY SOUND: Not only has the dual n-back paradigm been validated in top peer-reviewed journals, but our two founders – both PhDs, one with a focus on neuroscience, the other with a focus on higher education – have taken particular care to thoroughly align the app with the prevailing scientific research. TRACK YOUR PROGRESS: In order to help you stay motivated, the N-Back Challenge allows you to visually monitor your progress over time, build up “streaks,” and compare yourself against other learners across various stats. COMPETE AGAINST YOUR FRIENDS: Perhaps the most powerful way of making sure you remain motivated to complete the Challenge is to tackle it together with friends or colleagues. To make it more fun, we’ve provided leaderboards that allow you to compete based on who has completed the most sessions, racked up the longest streak, and more. CUSTOMIZE YOUR EXPERIENCE: The N-Back Challenge allows you to choose between different voices across multiple languages, turn on notifications, and customize their timing and style. There are advanced settings for turning on instant button feedback, controlling the n-back level, and tweaking the game speed. And if you are too busy to complete one session every day, you may switch to the Weekly Habit, which gives you a full week to complete each session. ------------------------------ ARE YOU… … A PARENT? Give your children an edge at school or university by nudging them to complete the N-Back Challenge. Indeed, why not tackle the Challenge together as a family? … A GRANDCHILD? Help your grandparents (and other older relatives) fight cognitive decline by introducing them to dual n-back. (See https://nbackchallenge.com/decline.) … A KNOWLEDGE WORKER? Share the N-Back Challenge with your HR department. Dual n-back may well be the single most cost-effective way of making knowledge workers more productive. (See https://nbackchallenge.com/work.) … A TEACHER? Use dual n-back to enhance students' problem-solving skills. You can have a big impact, with a minimal investment of time! (See https://nbackchallenge.com/class.) ------------------------------ HOW IT WORKS: The N-Back Challenge is free as long as you stick to the program. When you miss or delay a session, we ask you to support us with a “coffee,” which you can buy in-app or earn — for example, by using the Share link in the Settings to invite friends. (Each of you will receive a free coffee.) You can also unlock unlimited free breaks by becoming a premium subscriber. CUSTOMER SUPPORT: Do you have any questions or suggestions? Like to say hello? We’re happy to hear from you! Just drop us a note at support@nbackchallenge.com. ADDITIONAL RESOURCES: To learn more about dual n-back and the N-Back Challenge, browse our repository of articles at https://nbackchallenge.com/articles. Privacy Policy: https://nbackchallenge.com/privacy-policy Terms of Use: https://nbackchallenge.com/terms-of-use

Screenshots

Spritz App4 screens
N4 screens

Verdict

The call

The clearest difference is review sentiment: N at 83% against Spritz App's 21%. N also leads on rating (4.7 vs 2.8) and ratings volume (239 vs 34). Spritz App's advantage is in-app purchases (none vs 7) and device support (3 vs 1). On price, update cadence, ads and monetization model 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. N sells 7 in-app purchases, starting at $8.99 per month. Spritz App asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

N holds the better App Store score, 4.7 against 2.8. That said, the two scores are not equally well evidenced: N has 239 ratings behind it against 34, so its average is the more settled of the two. Written reviews point the same way: 21% of Spritz App's written reviews are positive against 83% of N's.

UpkeepUpdate frequency

Spritz App ships an update every 6 weeks, N monthly. Both last shipped on October 24, 2026.

Scorecard6 real differences · 4 level
Spritz App versus N: the parameters behind the verdict, then further details
ParameterSpritz AppN
PriceFreeFree
Rating2.8 (34 ratings)4.7 (239 ratings) — better
Positive reviews20.8% of reviews82.8% of reviews — better
Number of ratings34239 — better
Update frequencyEvery 6 weeksMonthly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS12.4 — better16.4
Further details — not scored
Size25 MB72 MB
Age rating17+17+
DeveloperSpritz Holding LLCRivuspurus

Customer experience

Spritz App

All ratings33 ratings
Positive33.3%
Neutral18.2%
Negative48.5%
Written reviews53 reviews
Positive20.8%
Neutral15.1%
Negative64.2%

N

All ratings239 ratings
Positive93.7%
Neutral0.4%
Negative5.9%
Written reviews93 reviews
Positive82.8%
Neutral3.2%
Negative14.0%

User reviews

Spritz App

From 34 App Store ratings

What we love

  • 🚀 Fast reading experience
  • 💡 Innovative reading concept
  • 👍 Helpful for ADHD/dyslexia
  • 📈 Can increase reading speed
  • ✨ Good for web pages

Room to improve

  • ❌ Cannot add own files/books
  • ❌ Sign-in/account issues
  • ❌ Copy-paste functionality problems
  • ❌ Red letter is distracting/painful
  • ❌ Not intuitive/too many clicks

N

From 239 App Store ratings

What we love

  • 🧠 Effective working memory improvement
  • 🎮 Excellent gamification and motivation system
  • 💰 Free to use with affordable payment options
  • 🎨 Clean, polished, intuitive user interface
  • 📚 Scientifically-backed with educational articles

Room to improve

  • 🐛 Frequent mid-session freezes and crashes
  • 🔊 Unclear letter pronunciation (some letters sound similar)
  • 💳 Controversial 'coffee' paywall for missed days
  • 🔌 Requires internet connection (not offline compatible)
  • ⚠️ Inconsistent instant feedback on answers

Bugs and requests

Spritz App

Reported bugs

13 issues
  • Cannot add own files
  • Sign-in and account creation issues
  • Text not copying correctly
  • App not working on certain sites
  • Auto-renewal issues
Show 8 more
  • Login problems
  • App not registering subscriber status
  • JavaScript required error
  • Cannot read Google Docs/Sites
  • Highlighting stops prematurely
  • App crashes or freezes
  • Copy-paste not working
  • Sign-in credentials rejected repeatedly

Requested features

16 requests
  • Add file/book import functionality
  • Implement a scanner for articles/webpages
  • Allow scanning documents with phone camera
  • Integrate with Safari for direct activation
  • Allow sending books from the Book app
Show 11 more
  • Add dark mode
  • Improve text highlighting and scrolling
  • Add ability to start reading at highlighted spot
  • Integrate with apps like Pocket
  • Add ability to 'Share' from browser to app
  • Allow changing word chunk size
  • Add a flat fee purchase option
  • Improve bookmarking functionality
  • Make it work with iBooks
  • Allow copy/paste of text
  • Allow PDF or ebook format import

N

Reported bugs

10 issues
  • Mid-session freezing and soft locks (most common)
  • Sound not generating for letters during gameplay
  • Buttons greyed out preventing interaction
  • App crashes when accessing stats
  • Double coffee charge on streak breaks
Show 5 more
  • Sound disabled when button pressed simultaneously with letter
  • App crashes on startup
  • Sync failures between iPad and iPhone
  • Game freezing on specific levels (Level 2, 4)
  • Countdown ends but first tile/letter doesn't appear

Requested features

10 requests
  • Single n-back and quad n-back modes
  • Lock screen widgets for streak reminders
  • Color-position dual n-back mode
  • More granular settings (interference, probability, trial count)
  • Penalty system for incorrect answers
Show 5 more
  • Game Center leaderboard integration
  • iPad and desktop versions with synced accounts
  • Offline gameplay capability
  • Data export for personal analysis
  • Extended play duration at higher levels

In-app purchases

None

Spritz App

No in-app purchases

7 purchases

N

Subscriptions2
  • Premium (monthly)$8.991 Month
  • Premium (annual)$54.991 Year
One-time5
  • 1 cup of coffee$1.99
  • 4 cups of coffee$5.99
  • Pizza$7.99
Show 2 more
  • 7 cups of coffee$8.99
  • 10 cups of coffee$10.99

Questions

Is Spritz App free?
Spritz App is free to download, with no in-app purchases.
Is N free?
N is free to download, with in-app purchases available.
Which has better reviews, Spritz App or N?
N is rated higher. Spritz App averages 2.8 out of 5 from 34 ratings, while N averages 4.7 from 239 ratings.
Do Spritz App or N have ads?
Neither Spritz App nor N shows ads.
Which is updated more often, Spritz App or N?
Spritz App ships an update every 6 weeks, and N monthly. Most recently, Spritz App was updated on October 24, 2026 and N on October 24, 2026.

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