Concept U vs Kivvs
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Concept U
This academic tool provides high school students with a personalized study path to achieve goals, foster autonomy, and improve academic performance. It includes assessments with immediate digital feedback.
- Personalized study path
- Goal achievement tracking
- Autonomy development
- Academic organization
- Immediate digital feedback
- Performance assessments
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Com o Concept University Prep, os estudantes do High School da Escola Concept têm acesso a uma ferramenta acadêmica com uma trilha personalizada de estudos que estimula a conquista de metas, autonomia e organização voltada para a performance acadêmica por meio de avaliações com feedbacks digitais imediatos.
Kivvs
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Kivvs — Master anything. Permanently. You've probably tried an app. Maybe two or three. You collected streaks, earned trophies, and after a year had a handful of phrases to show for it. Not because you lacked dedication — but because those tools were never built to take you anywhere. Maybe you tried an AI tutor instead. But a conversation that goes wherever you steer it isn't a curriculum — it's a mirror. You still had to know what to ask, what to practice, what came next. And you didn't. Because that's the whole point of having a system. Not a flashcard app. A learning system. Most learning tools track whether you've seen something. Kivvs tracks whether you actually know it — and builds every session from the ground up based on that distinction. At its core is a concept-based learning engine. Where traditional SRS tools show you a card — a word, a definition, maybe a sentence — Kivvs builds a semantic map. Every concept is encountered across dozens of natural contexts, modalities, and uses: reading it, hearing it, writing it, producing it. Not "a car is a vehicle with four wheels" — but driving it, cleaning it, crashing it, describing its color, until the word lives in your mind the way it lives in a native speaker's. And "concept" doesn't just mean vocabulary. The same system maps pronunciation: that the 'v' in "vine", and the 'f' in "of" land on the same sound — not because you studied a rule, but because you encountered them, in context, until your ear and mouth simply knew. It maps grammar the same way: you'll use the conditional, the subjunctive, complex tense constructions — correctly, automatically, in the right moment — because the system saturated you with the pattern across hundreds of natural examples until it became instinct. Without studying a single rule. Every session is assembled live, interleaving what you need to reinforce with what you're ready to acquire next. No static decks. No preset curriculum. A living system that adapts to your actual knowledge state. Built on decades of research you've never benefited from The science behind effective learning has existed for years. Frequency-based vocabulary progression. Phonological training that actually produces native-like pronunciation. Implicit grammar acquisition through massive contextual exposure — no rules to memorize, no theory to study. These methods are not experimental. They've simply never been applied together, at scale, in a consumer product. Until now. What acquisition actually looks like Conventional language courses are built around the assumption that you'll plateau at basic conversational ability. Kivvs is not. The system is designed for complete fluency — the kind where you don't translate in your head, don't hesitate before speaking, and don't sound like a tourist. One lesson a day will get you there in a few years. Serious daily commitment can compress that dramatically. Currently available: Language courses Spanish · French · Italian · Portuguese · English · German · Russian · Arabic More languages in active development. Coming soon: Music & Strategy. Kivvs is being built for any domain where deep, structured knowledge matters. Try Kivvs free for 30 days — full access, no restrictions. After that, a subscription is required to continue. Learn more about the science behind Kivvs at: https://www.kivvs.com/ Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Terms of Service: https://www.kivvs.com/terms Privacy Policy: https://www.kivvs.com/privacy
Screenshots
Verdict
The clearest difference is in-app purchases: Concept U at none against Kivvs's 1. Concept U also leads on ads (none vs shown) and update cadence (every 2 weeks vs every 3 months). On price 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. Kivvs sells 1 in-app purchase, starting at $9.99 per month. Concept U asks for nothing beyond the download.
Concept U ships an update every 2 weeks, Kivvs every 3 months. The most recent releases landed on October 4, 2026 and October 1, 2026 respectively.
| Parameter | Concept U | Kivvs |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (3 ratings) — better | — |
| Positive reviews | 66.7% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 2 weeks — better | Every 3 months |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 12.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 64 MB | 69 MB |
| Age rating | 4+ | 12+ |
| Developer | Grupo SEB | Guillermo Ariel Corrado |
In-app purchases
Concept U
No in-app purchases
Kivvs
- Monthly Subscription$9.991 Month









