Headway vs Callback
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Headway
Access concise summaries of nonfiction bestsellers to gain essential knowledge and achieve your goals. Engage in daily microlearning sessions, personalized challenges, and utilize spaced repetition to reinforce learning. Stay motivated with widgets and a vast library of content.
- 1700+ book summaries
- Daily microlearning sessions
- Self-growth challenges
- Personalized content
- Spaced Repetition feature
- Widgets for motivation
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Meet Headway — #1 most downloaded book summary app! We summarize key ideas from the world’s nonfiction bestsellers so you can get essential knowledge to crush your goals. More than 50 million people have already joined the Headway community to become the best versions of themselves. How about hopping along on this self-growth journey? ——————— WHAT YOU GET WITH HEADWAY * 1700+ book summaries to change your life Learn the main ideas from any nonfiction bestseller in less than 15 minutes. Whether you want to listen or read, we have you covered with concise summaries on any topic. * Daily microlearning session Start your day by tapping through a portion of bite-sized ideas. It’s the best way to build your routine around fun and easy growth! * Self-growth challenges Boost your life areas and skills with our challenges on Success, Wealth, Healthy Relationships, Modern Parenting, Self-Confidence, Emotional Intelligence, and more. * Highly personalized approach We pick every piece of bite-sized content according to your goals and needs. Enjoy your fun and fully customized journey to the top. * Only proven sources of ideas We pick titles from reputable lists like The New York Times Bestsellers and Amazon Bestsellers to deliver the highest quality of ideas. * Quality of summaries Our professional writers & editors polish every key idea in our hand-crafted content to create the best learning experience. * Spaced Repetition feature This recall technique helps turn your favorite insights into flashcards and go through them whenever you want. It’s also an excellent tool for those learning English, as you can turn any unknown word into a flashcard and quickly memorize it. * Widgets Now inspiration is always in your pocket and speaks to you every time you unlock your phone. We choose the best quotes and insights for Headway widgets to keep you motivated every second. ——————— WHAT 50M+ USERS HIGHLIGHT * Inspiring & motivating * Huge library of book summaries * Easy to read & listen * Would recommend ——————— WHAT MEDIA SAY ABOUT US “Headway is a bite-sized learning app for those who strive to grow. Helping users worldwide to become happier and more confident, their subscription-based service is designed to be worked into a busy schedule.”— Daily Mail “Professional writers and editors of the Headway team up with the best voice actors, moderators, and other team members to deliver an experience that is unmatchable in terms of quality.” — Mobile App Daily “Whether you’re taking a 15 minutes break, commuting to and from the workplace, or stuck in traffic, you can use the app to learn productivity or leadership hacks.”— MakeUseOf ——————— HOW DOES IT WORK? After you decide to begin your growth with Headway and download the app, you can start a free trial. Unless you cancel at least 24 hours before the end of the free trial, you will be automatically charged a price indicated on the payment screen for a chosen subscription period. Don’t worry, though — in any case, you’ll receive a reminder from us that your free trial is about to end. The Headway Premium subscription renews automatically at the end of each period (each week, month, 6 months, year, or otherwise, depending on the selected option) until you cancel. Canceling your subscription means the automatic renewal will be disabled. However, you will still have access to all your subscription features for the remaining time of your then-current period. Note that deleting the app does not cancel your subscriptions. Terms of Use: https://policy.get-headway.com/info/terms-and-conditions-web.html Privacy Policy: https://policy.get-headway.com/info/privacy-policy-web.html ——————— Got an idea about how to make your growth with Headway better? Please email support@get-headway.com, and our Support Jedis will pass it on to the rest of the team.
Callback
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Callback prepares you for iOS developer interviews — on the train, in a waiting room, or the night before the real thing. Everything works offline. There is no account to create, nothing to sign in to, and no network connection required. WHAT YOU GET • Eleven topics — Swift, Memory Management, Concurrency, SwiftUI, UIKit, Networking, Persistence & Data, Behavioral, Testing, Architecture & Patterns, and Mobile System Design — each with focused lessons and a bank of interview-grade questions. • Short, readable lessons with syntax-highlighted Swift, each ending in a quick check so you find out immediately whether it stuck. • Timed mock interviews with a pause-safe timer that survives backgrounding, so a phone call doesn't cost you the session. • A review queue that automatically resurfaces every question you got wrong or flagged — the fastest way to turn weak spots into strong ones. • Behavioral questions come with a model-answer rubric you score yourself against, because that's how they're actually assessed. • A readiness score that weights recent answers more heavily than old ones and accounts for how much of each topic you've actually covered. • Full VoiceOver support, Dynamic Type throughout, and Reduce Motion respected. PRIVATE BY DESIGN Callback makes no network requests at all. Your progress lives on your device and nowhere else. There is no analytics SDK, no advertising, and no crash reporting. You can export everything you've done as a JSON file, or erase it in one tap. Get the callback.
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Verdict
The clearest difference is in-app purchases: Callback at none against Headway's 15. Headway's advantage is chart position (#32 vs unranked) and device support (3 vs 1). On price, ads 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. Headway sells 11 in-app purchases, starting at $12.99 per month. Callback asks for nothing beyond the download.
| Parameter | Headway | Callback |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (117K ratings) — better | — |
| Positive reviews | 63.4% of reviews | — |
| Number of ratings | 117K — better | — |
| Update frequency | Every 4 days | — |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Best chart rank | #32 — better | — |
| Devices | iPhone, iPad, Apple Watch — better | iPhone |
| Requires iOS | 17.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 219 MB | 2 MB |
| Age rating | 12+ | 4+ |
| Developer | GTHW App Limited | Vladimir Babin |
Bugs and requests
Headway
Reported bugs
4 issues- App crashes and freezes
- Syncing issues across devices
- Incorrect or missing book information
- Unreliable notification system
Requested features
5 requests- Ability to save progress and resume books
- More personalization options
- Improved search and filtering capabilities
- Integration with other reading/learning apps
- Better customer support and refund policies
Callback
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Headway
- Headway premium$12.991 Month
- Headway premium$19.991 Year
- Headway premium2 variants$29.993 Months
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- Headway premium$39.993 Months
- Headway premium$49.991 Year
- Headway premium7 Days trial$59.991 Year
- Headway premium$59.991 Year
- Headway Premium14 Days trial$89.991 Year
- Headway Premium7 Days trial$89.991 Year
- Headway Premium Pro7 Days trial$109.991 Year
- 50 Infographics + Workbook$19.99
Callback
No in-app purchases









