Vocab Book vs StackAHabit
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Vocab Book
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When learning a new language, you need one thing above all: words and more words! So how do you manage to learn those efficiently? Vocab Book gives you the opportunity to always have your words with you. Studying vocabulary is possible in any location, can even be fun with the app's quiz mode. Use Vocab Book on all your iOS devices, iCloud will automatically keep your words in sync. Adding new words is easy and fast. *** Vocab Book Features *** - Quickly create as many words as you need, sorted into different vocabulary sets - Progress monitored in a simple, efficient system - Easy studying by automatic quizzing - Automatic iCloud synchronisation
StackAHabit
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StackAHabit is the first progressive overload app for habits. Start with a step you can do. Hit your weekly target, then level up. The principle that builds strength now builds habits: small, steady increases that stack week after week. PROGRESSIVE OVERLOAD, BUILT IN Every habit has a weekly target. Hit it and you move up a level next week. Miss it and you hold your level, then go again. Your progression never moves backward. DESCRIBE YOUR HABIT, GET A FULL PLAN Tell the AI habit stacker what you want to build. It designs a personalized weekly progression, like a run that grows from 1.0 km to 1.25 km to 1.5 km. Adjust it with a prompt or edit it by hand. START FROM READY-MADE HABIT STACKS Prefer a head start? Choose a ready-made habit stack for health, focus, mindset, or discipline and begin today. ALWAYS KNOW YOUR NEXT STEP See the whole roadmap, week by week. Each level is one doable step beyond the last, so you always know what comes next. CLIMB EVERY WEEK YOU SHOW UP Check in daily with a simple yes. Your weekly evaluation runs when you open the app and shows how far you have climbed. SEE YOUR CONSISTENCY ADD UP Every check-in counts. Watch your weeks, levels, and completed habits build into a clear picture of progress. EARN RANKS AS YOU GROW Every check-in earns XP. Rise from Seedling through 11 ranks as your habits get stronger. CELEBRATE PROGRESS YOU CAN SHARE Reach a milestone and share it as an achievement. Your progress is worth showing off. PICK A HABIT IN SECONDS Choose a habit, set your weekly target, and start. Run several habits at once, each on its own progression. YOUR NEXT STEP, ON YOUR HOME AND LOCK SCREEN Add habit widgets to your home screen or lock screen, and follow today's habit with Live Activities. Pick one goal. Start with one doable step. Stack the weeks into progress you can see.
Screenshots
Verdict
The clearest difference is device support: StackAHabit at 2 against Vocab Book's β. StackAHabit also leads on iOS requirement (15.1 vs 17.0). On price and in-app purchases there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Vocab Book | StackAHabit |
|---|---|---|
| Price | Free | Free |
| Update frequency | β | Every 2 weeks |
| Ads | β | No |
| In-app purchases | No | No |
| Devices | β | iPhone, iPod β better |
| Requires iOS | 17.0 | 15.1 β better |
| Further details β not scored | ||
| Size | 1 MB | 51 MB |
| Age rating | 17+ | 4+ |
| Developer | Oliver Brehm | Martin Penev |
In-app purchases
Vocab Book
No in-app purchases
StackAHabit
No in-app purchases





