Bubble Learning vs KGNAD
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Bubble Learning
Read full descriptionHide full description
Welcome to our app! This game was created with a simple yet ambitious goal: to help you learn as many words as possible in the shortest time, while having fun. We believe that words are the true foundation of a language. It is from them that understanding and communication skills are built. Grammar comes later, as a natural complement. That's why we developed a game entirely focused on vocabulary acquisition. We designed it to be fully accessible, from start to finish, with no mandatory payments. By completing the game, you will learn around 5,000 words, a solid and concrete base to start speaking a new language with confidence and ease. We truly hope our app helps you in your learning journey. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
KGNAD
Read full descriptionHide full description
der, den, dem, or des? German has four words for "the" and a rule for each. KGNAD drills those rules until the right one is automatic. KGNAD is a study app for the German cases: Nominativ, Akkusativ, Dativ, and Genitiv. It is built around one short, focused loop. HOW IT WORKS Every question is a real German sentence with one word missing and four answers. You tap the article or ending you think is right. The app tells you immediately whether you got it and shows you the rule behind the answer, in plain English. Questions you miss come back in later sets, spaced out over time, until you get them right. Spaced repetition doing the work of a flashcard deck, without the deck. WHAT YOU DRILL - Nominativ and Akkusativ: der, den, einen, mich, dich, ihn - Dativ: dem, der, mir, dir, and the verbs that demand it (helfen, danken) - Fixed prepositions: für + Akkusativ, mit + Dativ, zum, zur, ins - Two-way prepositions: wohin vs. wo, stellen vs. stehen - Genitiv and N-Deklination: des Mannes, dem Kollegen - Adjective endings: weak, mixed, and strong - The fine print: dessen, deren, eines Tages Study one topic at a time, or hit FULL MIX to shuffle every case together the way real German does. A CHEAT SHEET, ALWAYS ON HAND Stuck mid-question? Open the built-in reference for the full declension tables: Artikel, Ein-Wörter, Pronomen, and Adjektivendunge looking. TECHNO WHILE YOU STUDY KGNAD comes with licensed background tracks that play whil a session feels less like homework and more like heads-down focus. Turn it off any time. NO ACCOUNT. NO ADS. No sign-up, no nagging. Open it, drill a set, close it. der, die, das. dativ, akkusativ, genitiv. one set at a time. KEINE GNADE.
Screenshots
Verdict
The clearest difference is in-app purchases: KGNAD at none against Bubble Learning's 2. KGNAD also leads on ads (none vs shown). Bubble Learning's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 18.0). On price and update cadence 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. Bubble Learning sells 2 in-app purchases, starting at $24.99 per year. KGNAD asks for nothing beyond the download.
Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on October 14, 2026 and September 30, 2026 respectively.
| Parameter | Bubble Learning | KGNAD |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 247 MB | 399 MB |
| Age rating | 4+ | 9+ |
| Developer | STEFANO NINNO | Joao Filipe Serôdio Josézinho |
In-app purchases
Bubble Learning
- AnnualSubscription$24.991 Year
- IncreaseClicks$0.99
KGNAD
No in-app purchases
Questions
Is Bubble Learning free?
Is KGNAD free?
Do Bubble Learning or KGNAD have ads?
Which is updated more often, Bubble Learning or KGNAD?
Other comparisons















