Most prep tools sell a percent. Test day sells a sitting.
Acedify splits those jobs on purpose. Free is unlimited practice so you can learn the exam’s language. Pro is what you add when the question becomes: Am I ready for this sitting? — the same measurement idea as Know your score before test day.
Free — what you already get#
Free: unlimited practice, explanations tied to the deciding line, items attempted, raw accuracy.
That is enough to:
- Learn domain / section / task vocabulary
- Clear obvious Gaps without a subscription
- See whether untimed recognition is even forming
No need to buy Pro to start. Start practicing free.
Pro — what timed sittings buy#
Pro unlocks the measurement layer:
| Capability | Why it matters |
|---|---|
| Timed test mode | Exam clock, not eventual correctness |
| Ability estimate + readiness (range) | Narrowing signal across sittings — not one theatrical percent |
| Adaptive items | Where the exam is adaptive, practice can follow that shape |
| Per-question time breakdown | Fluent vs Fragile becomes visible |
| AI coaching on demand | Next drill named in exam language |
The four pacing buckets — Fluent, Fragile, Guessed, Gap — only become honest when time is measured. Full vocabulary: Fluent, Fragile, Guessed, Gap.
Note
Pro does not invent pass rates or guaranteed lifts. It answers a narrower question: is the range tight enough for your date, and what still opens it?
Free vs Pro (what changes)#
- Free: unlimited practice — no card required to start.
- Pro: timed sittings, readiness range, adaptive items, per-question time, AI coaching — plan lengths vary.
- Prices: current Pro plans and prices are on the site.
One subscription covers IT tracks, language exams, and SAT — not a separate cart per exam family.
We will not paste fake testimonials, invented user counts, or “90% of Pro users…” claims. Product truth is enough.
When Free is enough vs when Pro earns its keep#
| Situation | Usually |
|---|---|
| Learning exam vocabulary; clearing obvious Gaps | Free |
| Untimed percent stopped answering readiness | Pro timed sittings |
| Voucher / test fee / registration date on the calendar | Pro — range + holdback |
| Need Fluent vs Fragile, not just right/wrong | Pro — per-question time |
If you are still discovering what AZ-900 domains are, stay on Free. If you are deciding whether to spend the voucher next month, you need the clock.
Same loop on every exam#
Practice → drill the gap → sit timed → read the range.
That loop is identical whether you are on:
- IT: e.g. AZ-900 timed practice or CLF-C02 timed practice
- Language: e.g. TOEFL Writing Academic Discussion timed or IELTS Listening plays once
Free builds the deciding line. Pro asks whether the line survives the budget.
What Pro is not#
- A substitute for official scores (diagnostics ≠ IELTS bands, TOEFL 1–6, College Board, or vendor scores)
- A dump of “guaranteed pass” PDFs
- Social proof theatre
If a tool’s pitch is a percent and a vibe, it is measuring something other than a sitting.
Weekly shape once Pro is on#
- 2–3 untimed Free sessions — bias to last sitting’s holdback.
- 1 timed Pro module — full clock discipline.
- Read the range — tag Fragile; drill Gaps.
- Repeat — stop when residual risk fits your date.
No invented lifts. Measurement only.
You are learning AZ-900 domain names for the first time. Best start?
Know your score before test day#
Start free. Add timed sittings when the calendar — and the residual risk — demand it.
Next step: Start practicing free. Upgrade to Pro when you need the clock, the buckets, and the range.