Comparison

Class Organizer vs PDF Extender

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

Head to head
About

Class Organizer

Manage your school schedule, homework, exams, grades, and notes all in one place. Features include a visual timetable, unlimited note-taking with drawing capabilities, and progress tracking. Collaborate on notes and share assignments easily.

Highlights
  • Visual timetable with drag & drop
  • Unlimited note-taking and drawing
  • Homework and exam tracking with reminders
  • Grade calculation and analysis
  • Collaborative note-taking
  • iCloud synchronization across Apple devices
Features
Read full description

Class Organizer ist dein Schulplaner für iPhone, iPad, Mac und Apple Watch: Stundenplan, Hausaufgaben, Klausuren, Noten und Notizen an einem Ort. Ohne Konto, ohne Werbung, ohne Tracking. HEUTE Auf einen Blick: deine Stunden, offene Hausaufgaben, die nächste Klausur und dein Notenschnitt. STUNDENPLAN • Fächer per Drag & Drop in den Plan ziehen, Doppelstunden mit einem Griff • Räume, Lehrkräfte und Pausenzeiten • Stundenplan abfotografieren – die App erkennt Fächer und Zeiten • Ferien und Feiertage für dein Bundesland • Lehrer-Modus mit Klasse und Raum pro Stunde NOTIZEN OHNE GRENZEN • Eine riesige Fläche zum Schreiben und Zeichnen mit dem Apple Pencil – frei zoomen und wischen • Textfelder, Formen, Notizzettel, Tabellen, Fotos, gescannte Dokumente, Dateien und Links • Hintergründe: Punkte, Linien, kariert, Millimeter oder Notenlinien • Notizen direkt mit einer Stunde verknüpfen • Zusammenarbeiten: Freunde per Link einladen und gemeinsam an einer Notiz arbeiten HAUSAUFGABEN & KLAUSUREN • Fälligkeiten, Erinnerungen und Mitteilungen • Klausuren mit Countdown und Lernthemen • Auf Wunsch in Kalender und Erinnerungen eintragen NOTEN • Viele Notensysteme – auch aus anderen Ländern • Durchschnitt pro Fach und gesamt, Notenverlauf als Diagramm • Abitur-Rechner und Was-wäre-wenn-Rechner TEILEN Hausaufgaben, Klausuren, Notizen oder den ganzen Stundenplan per Link verschicken – Freunde übernehmen alles mit einem Tipp. ÜBERALL DABEI • Widgets für deinen Home-Bildschirm • Aktuelle Stunde als Live-Aktivität • App für die Apple Watch • Synchronisierung über iCloud zwischen all deinen Geräten • Auf Deutsch und Englisch DEINE DATEN GEHÖREN DIR Alles bleibt auf deinem Gerät und in deiner iCloud. Kein Konto, keine Werbung, kein Tracking. CLASS ORGANIZER PLUS Lernen mit dem KI-Tutor – direkt auf deinem Gerät mit Apple Intelligence. Die ersten 7 Tage kannst du alles ausprobieren, danach bleibt ein kleines Gratis-Kontingent. Mit Plus (monatlich, jährlich oder einmalig) nutzt du KI-Tutor, Probeklausuren und Lernzettel ohne Grenzen. Stundenplan, Hausaufgaben, Klausuren, Noten, Notizen und iCloud-Sync bleiben kostenlos. Abos verlängern sich automatisch, wenn sie nicht spätestens 24 Stunden vor Ablauf in den Einstellungen deines Apple Accounts gekündigt werden. Nutzungsbedingungen: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Datenschutz: https://class-organizer.com/datenschutz.html

About

PDF Extender

Read full description

Exercise sheets, lecture notes, past exams: they arrive as PDFs laid out for paper — packed full, with no room beside them. On paper, you still had your notebook. On an iPad, you squeeze your calculations between two lines or create a second document for the solutions. PDF Extender makes every page wider. The app adds a margin on the right, left or both sides — blank, grid, lined or dotted. The question and your working sit side by side, just the way you want to see them when revising for an exam. The page content stays intact: nothing is scaled, shifted within the original page area or covered. A new PDF is created; your original stays as it was. IN FOUR STEPS 1. Add PDFs — one at a time or several exercise sheets together. 2. Choose a margin — right, left or both sides, half or full page width. 3. Choose paper — blank, grid, lined or dotted, with 5, 7 or 10 mm spacing. 4. Export — the live preview shows you the exact result first. Then keep writing where you already use your Apple Pencil: Notes, GoodNotes, Notability or Files. WHY IT WORKS • Live preview — see every change right away, with no surprises after export. • Several exercise sheets at once — import multiple PDFs, choose one setting and export them together. • Fits every format — A4, US Letter, landscape and mixed page sizes. • Never overwrites — each result is saved as a separate file with the “-extended” suffix. • Fixed export folder — exports go straight into your study folder structure. • Quickshare (Pro) — share a PDF from Mail or Safari and get an extended copy back without opening the app. • Presets (Pro) — save three combinations, such as lined on the right or grid on both sides, and apply one with a single tap, in the app and in Quickshare. • Three looks — Studio, Billet and Kontor. Handy for teachers, too: add a defined solution area to worksheets before handing them out, or a notes column to handouts. One batch, one setting, one export. WHAT THE APP ISN’T It isn’t an annotation tool — you write in your notes app. It isn’t a PDF editor or scanner. On larger iPad screens, the document list and preview sit side by side in two columns; on iPhone and in narrow iPad windows, a compact view guides you through the same steps. FREE AND PRO All margin formats, paper styles, the preview and all designs are free. Only the volume is limited: 10 exports to start, then 3 per week, with a subtle watermark. Pro removes those limits — unlimited exports, a watermark you can turn off, Quickshare and three saved presets. One-time purchase, no subscription. PRIVACY Your PDFs, filenames and page contents are never sent to us or the analytics provider. No account, no advertising tracking. Only if you agree does the app send usage events and a hashed installation identifier to TelemetryDeck. You can withdraw consent in Settings at any time. PDF processing works fully offline — on the train, in the lecture hall or in the library.

Screenshots

Class Organizer4 screens
PDF Extender4 screens

Verdict

The call

The clearest difference is device support: Class Organizer at 4 against PDF Extender's 2. PDF Extender's advantage is iOS requirement (17.0 vs 26.2). On price, update cadence, 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. Class Organizer sells 3 in-app purchases, starting at $2.99 per month and PDF Extender sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Class Organizer ships an update every 11 days, PDF Extender every 3 weeks. Both last shipped on November 13, 2026.

Scorecard2 real differences · 6 level
Class Organizer versus PDF Extender: the parameters behind the verdict, then further details
ParameterClass OrganizerPDF Extender
PriceFreeFree
Positive reviews83.3% of reviews—
Update frequencyEvery 11 days — betterEvery 3 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhone, iPad, Mac, Apple Watch — betteriPhone, iPad
Requires iOS26.217.0 — better
Further details — not scored
Size81 MB7 MB
Age rating4+4+
DeveloperJonathan SauppeSB Labs

In-app purchases

3 purchases

Class Organizer

Subscriptions2
  • Plus Monthly$2.991 Month
  • Plus Yearly$22.991 Year
One-time1
  • Plus Lifetime$34.99
1 purchases

PDF Extender

One-time1
  • Pro freischalten$2.99

Questions

Is Class Organizer free?
Class Organizer is free to download, with in-app purchases available.
Is PDF Extender free?
PDF Extender is free to download, with in-app purchases available.
Do Class Organizer or PDF Extender have ads?
Neither Class Organizer nor PDF Extender shows ads.
Which is updated more often, Class Organizer or PDF Extender?
Class Organizer ships an update every 11 days, and PDF Extender every 3 weeks. Most recently, Class Organizer was updated on November 13, 2026 and PDF Extender on November 13, 2026.

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