How is Nail German different from apps like Duolingo or Babbel?

Duolingo and Babbel focus on general casual vocabulary matching. Nail German is an intensive examination drill engine built specifically for the grammar sections of official Goethe-Zertifikat and telc exams. It enforces strict CEFR rules, timed 15-minute mock simulations, and Leitner 3-streak active recall.

Which specific exams and CEFR levels are supported?

The curriculum spans all 6 CEFR levels (A1, A2, B1, B2, C1, C2) calibrated for Goethe-Zertifikat (A1–C2), telc Deutsch (A1–C1 Hochschule), and TestDaF.

Why is the Exam Simulator passing score set to exactly 60%?

Both Goethe-Institut and telc gGmbH officially require a minimum score of 60% (60/100 points or 9/15 items) to award an official language certificate. We match this exact Bestehensgrenze in our 15-minute exam simulator so you know your true test readiness.

Is the €19.99 Lifetime Pass truly a one-time payment with no subscription?

Yes. You pay €19.99 once and unlock permanent lifetime access to all 1,647 verified questions, all 6 CEFR levels (A1 to C2), unlimited exam simulations, and all future question updates with zero recurring charges or hidden fees.

Can I install this on my iPhone, Android, or laptop offline?

Yes! Nail German is built as a Progressive Web App (PWA). Open app.nailgerman.com on Safari or Chrome, tap Add to Home Screen, and the app installs as a full-screen standalone application that saves your local progress and works offline.

How does the 3-Box Ampel Leitner system work?

Every question is tracked individually in local storage. Missed questions drop to Box 1 (Rot) for immediate re-drilling. Questions advance to Box 2 (Gelb) upon 1 correct hit, and are only stamped Box 3 (Grün • Mastered) once you achieve 3 consecutive correct hits across mixed interval drills.

Should I use Nail German alone or alongside my current German course?

Nail German is engineered as the ultimate high-yield examination companion. While structured classroom courses (VHS, Goethe-Institut) and conversation apps provide listening and immersion, Nail German provides the high-frequency active recall drills needed to master examination grammar and clear the strict 60% Bestehensgrenze under timed pressure.

B1–B2 Polite & UnrealGoethe B1, Goethe B2, telc Deutsch B2

German Konjunktiv II: Formulas for Polite Requests & Hypotheticals

Konjunktiv II is used for polite requests, wishes, hypothetical scenarios, and unreal conditions. Most verbs use würde + Infinitiv, while core auxiliary and modal verbs use distinct subjunctive forms.

Mathematical Formula Blueprints

Standard Konjunktiv II (würde + Infinitiv)

Used for 95% of regular German verbs.

Subject+WÜRDE (conjugated)+Mittelfeld+INFINITIV (Ende)

Example:

"Ich würde gerne mehr Zeit mit meiner Familie verbringen."

Subject: Ich | Subjunctive: würde | Infinitiv am Ende: verbringen

Unreal Past Conditions (Vergangenheit)

Used to express regrets or hypothetical past events that did not happen.

WÄRE / HÄTTE (conjugated)+Mittelfeld+PARTIZIP II (Ende)

Example:

"Wenn ich das gewusst hätte, wäre ich nicht dorthin gefahren."

Condition: hätte gewusst | Consequence: wäre gefahren

Core Rules & Sentence Mechanics

The 6 Irregular Core Verbs (Never use "würde")

Ich wäre froh (NOT: Ich würde froh sein) | Ich hätte Zeit (NOT: Ich würde Zeit haben).

Modal Verbs in Konjunktiv II

Modal verbs take an umlaut: können -> könnte | müssen -> müsste | dürfen -> dürfte | sollen -> sollte (no umlaut).

Könnten Sie mir bitte helfen? (Could you please help me?)

Reference Matrix & Master Table

Core Konjunktiv II Conjugation Matrix
Pronoun	haben (hätte)	sein (wäre)	werden (würde)	können (könnte)	müssen (müsste)
ich	hätte	wäre	würde	könnte	müsste
du	hättest	wärst / wärest	würdest	könntest	müsstest
er/sie/es	hätte	wäre	würde	könnte	müsste
wir	hätten	wären	würden	könnten	müssten
ihr	hättet	wärt / wäret	würdet	könntet	müsstet
sie/Sie	hätten	wären	würden	könnten	müssten

Official Goethe & telc Exam Traps

The Double "Wenn" Double Verb Trap in Past Unreal

When combining a modal verb with another verb in past Konjunktiv II, the double infinitive goes to the end.

COMMON MISTAKE (0 Points)

Wenn ich gekonnt hätte kommen... (WRONG)

CORRECT STRUCTURE

Wenn ich hätte kommen können, wäre ich da gewesen. (CORRECT)

Examiner Rule: In subordinate clauses with double infinitives, "hätte" moves before the two infinitives.

Live Interactive Calibration

KNOWLEDGE CHECK

Test Your Understanding

Try these 2 interactive calibration questions for German Konjunktiv II: Formulas for Polite Requests & Hypotheticals.

Question 1 of 2Konjunktiv II Core Verbs

Wenn ich mehr Geld [ ··· ], würde ich eine Weltreise machen.

Question 2 of 2Polite Requests

[ ··· ] Sie mir bitte die Rechnung per E-Mail zusenden?

Master this rule permanently

Lock in long-term memory with the 3-Streak Leitner system across all 1,647 CEFR questions.

Launch Interactive Training