Comparison

Seven Assistant vs Lagz

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Seven Assistant

This app transforms lesson ideas into complete educational materials, including worksheets, quizzes, presentations, and custom images. It supports content creation from various sources and offers translation and difficulty adjustments for diverse learners.

Highlights
  • Lesson planning and creation
  • Worksheet generation
  • Interactive quiz building
  • Custom image creation
  • Content translation
  • Material import from various sources
  • Web search for current facts
Features
Read full description

Seven Assistant turns an idea for a lesson into the finished material. It is built first for teachers, and it works just as well for students and anyone who wants to learn or explain something clearly. Tell it what you want to teach. A topic, a grade level, a learning goal. Seven Assistant plans the lesson, writes the worksheet, builds the quiz, and can even draw the picture that goes with it. What used to take an evening of preparation now takes a few minutes. What you can create: • Complete lessons and full lesson series, structured the way you actually teach • Worksheets with the exercise types you need, from multiple choice to fill in the blank • Interactive quizzes, flashcards, crosswords and other H5P content • Presentations and slides, ready to export • Images and illustrations made for the classroom, in the style you choose • Audio from text for dictations, listening tasks and read aloud versions • Mind maps, timelines and flowcharts • Word documents you can edit and hand out Bring your own material as the starting point. Upload a PDF, a document, an image, an audio file or a video, point it at a web page, or just paste your text. Seven Assistant reads through it, pulls out what matters, and uses it to build exactly what you asked for. It can also search the web for current facts and sources, and align content to your regional curriculum. It speaks your students' language too. Create and translate material across more than twenty languages, adjust the difficulty for a mixed class, and support learners who need it. Your data stays yours. Seven Assistant is built to meet data protection rules, so you get real help without leaving personal information behind. A safe, private place to teach and to learn. Open Seven Assistant and make your next lesson the easy part.

About

Lagz

Features
Read full description

Lagz macht die Schallgeschwindigkeit im Physikunterricht messbar – mit nichts weiter als einem Luftballon, einem iPad und ein paar Metern Abstand. SO FUNKTIONIERT DAS EXPERIMENT Eine Person lässt in 15 bis 20 Metern Entfernung einen aufgeblasenen Luftballon platzen, eine zweite filmt den Moment mit dem iPad in Zeitlupe (bis zu 240 Bilder pro Sekunde). Das Licht erreicht die Kamera praktisch verzögerungsfrei, der Knall dagegen messbar später. Genau diese Differenz wird in Lagz sichtbar: Die Schüler:innen markieren zwei Zeitpunkte – t1, wenn der Ballon im Bild zerplatzt, und t2, wenn der Knall in der Tonspur ankommt. Aus der bekannten Entfernung und der Zeitdifferenz ergibt sich die Schallgeschwindigkeit. FUNKTIONEN • Videoaufnahme in Zeitlupe direkt in der App oder Import aus der Fotomediathek • Bildgenaues Scrubbing durch das Video, Pinch-to-Zoom für den entscheidenden Moment • Wellenformdarstellung der Tonspur mit frei ziehbaren Markern für t1 und t2 • Audio-Scrubbing: Der Knall ist beim Ziehen des Markers direkt hörbar • Video zuschneiden, um sich auf den relevanten Ausschnitt zu beschränken • Vergleich mit dem theoretischen Wert in Abhängigkeit von der Lufttemperatur • Messungen werden lokal auf dem Gerät gespeichert DAS RECHNEN BLEIBT SCHÜLERSACHE t1 und t2 werden groß angezeigt – die Formel v = s / Δt liegt bewusst hinter einem eigenen Button samt Schritt-für-Schritt-Anleitung. So führen die Schüler:innen die Rechnung zuerst selbst von Hand durch und prüfen ihr Ergebnis erst danach in der App. FÜR DEN UNTERRICHT GEMACHT Lagz richtet sich an Lehrkräfte und Schüler:innen der Sekundarstufe I und II im Themenfeld Akustik und Wellenlehre. Die App eignet sich für Einzel- und Gruppenarbeit, im Klassenzimmer ebenso wie auf dem Schulhof. DATENSCHUTZ Lagz erfasst keine Daten. Videos und Messwerte bleiben ausschließlich auf dem Gerät. Kamera und Mikrofon werden allein für die Aufnahme des Experiments verwendet.

Screenshots

Seven Assistant4 screens
Lagz4 screens

Verdict

The call

The clearest difference is update cadence: Lagz at every 8 days against Seven Assistant's monthly. Seven Assistant's advantage is device support (4 vs 2) and iOS requirement (15.0 vs 18.5). On price, ads and in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Seven Assistant ships an update monthly, Lagz every 8 days. The most recent releases landed on October 1, 2026 and October 7, 2026 respectively.

Scorecard3 real differences · 5 level
Seven Assistant versus Lagz: the parameters behind the verdict, then further details
ParameterSeven AssistantLagz
PriceFreeFree
Positive reviews100.0% of reviews—
Update frequencyMonthlyEvery 8 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad
Requires iOS15.0 — better18.5
Further details — not scored
Size190 MB2 MB
Age rating17+4+
DeveloperDigital Learning GmbHHarald Hochwald

In-app purchases

None

Seven Assistant

No in-app purchases

None

Lagz

No in-app purchases

Questions

Is Seven Assistant free?
Seven Assistant is free to download, with no in-app purchases.
Is Lagz free?
Lagz is free to download, with no in-app purchases.
Do Seven Assistant or Lagz have ads?
Neither Seven Assistant nor Lagz shows ads.
Which is updated more often, Seven Assistant or Lagz?
Seven Assistant ships an update monthly, and Lagz every 8 days. Most recently, Seven Assistant was updated on October 1, 2026 and Lagz on October 7, 2026.

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