Why?! vs Vocabulary Builder
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Why?!
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Why?! is the safe digital knowledge companion for children aged 4 to 16. With a lovingly animated animal character as their guide, your children can ask all their questions – anything that comes to mind. The app grows with your child and automatically adapts answers to their respective age. The App That Grows With Your Child From preschool to adolescence, Why?! accompanies your children on their journey of discovery. Younger ones can simply ask their questions by voice – even if they can't read yet. As soon as your child starts learning to read, text is additionally displayed. For older children from about 10 years old, the app offers a complete chat interface as a safe alternative to uncontrolled AI tools. This way, your children get exactly the support they need at their respective developmental stage. Playful Learning With the Bottles & Glasses System Children learn not only knowledge, but also conscious resource management. Each week they receive a "knowledge bottle" that they can distribute over seven days. This makes the abstract use of AI tangible and playfully teaches that resources are valuable. A lovingly animated fox accompanies every interaction and makes learning a joyful experience. Does the learning companion become a friend? No. Why?! transparently teaches children that it's an AI – a learning tool without feelings. This honesty promotes a healthy relationship with technology. Real friendships are formed with people. Perfectly Designed for Families You can create up to five child profiles and make individual settings for each child. The app shows you which topics particularly interest your children – without seeing the conversations themselves. You get valuable insights and conversation starters while your children's privacy remains protected. This relieves you from the many "Why?" questions of daily life while giving you the assurance that your children are safely interacting with AI. Security You Can Rely On Full control remains with you: You decide which of the 15 topic areas may be discussed. The adult area is PIN-protected, so only you can change the settings. This way you can be sure that your children are learning in a protected environment. Privacy is not an option for Why?!, but a standard. We minimize data storage to the essentials, use European servers, and comply with COPPA and GDPR guidelines for children’s applications. Flexible Subscriptions for Every Family Test Why?! in the first month at a heavily discounted price and then decide which subscription fits your family. The monthly or annual subscriptions are tiered by number of children – from one to five children. Why?! turns childhood curiosity into a safe learning experience – developed by parents for parents. Apple EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Vocabulary Builder
Explore words through a unique two-dimensional map of intensity and nuance. Discover curated definitions and examples, then test your knowledge with adaptive quizzes. Track your progress and earn virtual achievements.
- Two-dimensional word mapping (intensity & nuance)
- Curated definitions and examples
- Adaptive quiz modes (definition, nuance, intensity)
- Practice progress tracking (heatmap, missed words)
- Daily Word of the Day widget
- Mastery achievements
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1983 is a vocabulary map. Every word in the catalogue is placed in two dimensions: intensity (from mild to extreme) and nuance (the axis that distinguishes near-synonyms). Open a cluster — say, "Shades of Anger" — and you see the entire neighborhood at a glance: irked vs incandescent vs apoplectic, all mapped, all clickable. The catalogue is curated, not crawled: 1,863 words across 208 clusters and 15 superclusters, each definition hand-written, each example pulled from public-domain literature or anchored in mythology. No filler, no near-duplicates. What's inside: THE SHELF — Browse the full map by supercluster, then drill into clusters of 4 to 30 words. Toggle the nuance axis to re-arrange the cluster from a different angle. THE DRILL — Three quiz modes: definition (which word means X), nuance (which option has the right shade), and intensity (rank by strength). Questions adapt to what you've missed. THE RECORD — A 90-day heatmap of practice, a list of your most-missed words, and a mastery archive that fills in as you progress. Master a cluster and earn a printed patch. THE DAILY — A Word of the Day widget for your home screen, refreshed every morning from the catalogue. Tap it to jump straight to the card. 7-day free trial, then $5.99/month auto-renewing subscription. Cancel anytime in Settings. Apple Sign In, Google Sign In, or email signup. Built for writers, GRE/SAT candidates, ESL speakers ready for the upper register, and anyone who got tired of looking words up only to forget them the next day. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is update cadence: Vocabulary Builder at every 2 days against Why?!'s monthly. 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. Why?! sells 10 in-app purchases, starting at $7.99 per month and Vocabulary Builder sells 1 in-app purchase, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.
Why?! ships an update monthly, Vocabulary Builder every 2 days. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.
| Parameter | Why?! | Vocabulary Builder |
|---|---|---|
| Price | Free | Free |
| Rating | — | 3.0 (2 ratings) — better |
| Number of ratings | — | 2 — better |
| Update frequency | Monthly | Every 2 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | — | Subscription |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.1 | 15.0 — better |
| Further details — not scored | ||
| Size | 36 MB | 19 MB |
| Age rating | 4+ | 4+ |
| Developer | Looking4Cache UG (haftungsbeschraenkt) | soumaya Jameleddine |
In-app purchases
Why?!
- 1 Kid / Month1 Month trial$7.991 Month
- 2 Kids / Month1 Month trial$11.991 Month
- 3 Kids / Month1 Month trial$14.991 Month
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- 4 Kids / Month$17.991 Month
- 5 Kids / Month1 Month trial$19.991 Month
- 1 Kid / Year$59.991 Year
- 2 Kids / Year$89.991 Year
- 3 Kids / Year$109.991 Year
- 4 Kids / Year$129.991 Year
- 5 Kids / Year$149.991 Year
Vocabulary Builder
- 1983 Pro7 Days trial$5.991 Month









