Best IELTS Mock Test Apps (2026)

Short answer: The best IELTS mock test app in 2026 for most candidates is IELTSbiz - a web app with nothing to install - for its full four-skill mock (about 2 hours 45 minutes, each section banded), its timed 60-minute Reading test and one-play Listening, followed by trap-level feedback on every Reading question.

For free full four-section mocks in a native app, KeenIELTS is the standout on Android and iPhone.

Disclosure before the ranking: IELTSbiz is our own product, so discount our first place as you see fit.

We publish it because the reasoning is testable free, and because we are explicit below about the caveats - the free plan realistically covers one complete four-skill mock, and for repeated free full sittings the native apps beat us.

Definitions matter in this category, because the label "mock test" is stretched to cover very different things. A full mock test is a complete exam section - or all four - sat under real timing with no pause, scored on the official conversion.

Anything shorter, untimed or replayable is practice, which is valuable but measures nothing.

Every entry below was re-checked against its current store listing in September 2026, and the field was filtered hard: apps whose "mock tests" turn out to be untimed quizzes, or whose band conversion departs from the official table, did not make the list regardless of download counts.

One more thing changed this year: paper-based IELTS ended in most markets on 27 June 2026, so every mock should now be practised in the computer-delivered format.

The seven best options, prices checked as of September 2026.

How we ranked these mock test apps

Our standard four criteria, tuned for mocks. Feedback depth weighs heaviest and is where mock apps differ most: a mock that ends in a bare score has done half its job, because the value of a mock is the review.

Measurement: does the app convert to a band and track attempts over time? Then free access - full mocks free, or samples - and price.

Realism is the gate rather than a criterion: real timing, no pause, exam-format questions, official score conversion. On trusting automated scoring at all: the IELTSbiz Writing Checker quotes the sentence behind every correction, so you can check its feedback against your own essay.

Score-conversion honesty also separated apps. The official table is public - roughly 30 of 40 correct for Band 7 in Listening, with Academic Reading a shade stricter - and apps that flatter with generous conversions were marked down.

A mock app that inflates your band is worse than no mock at all, because it delays the fixing.

1. IELTSbiz - Best mock-plus-diagnosis loop, no install

IELTSbiz's exam simulation is a genuine Reading mock: three fresh Cambridge-style passages, 60 unbroken minutes, no pause button, scored on the official band conversion. Because passages are generated on demand, you never re-sit a paper you half-remember - every mock is genuinely cold, which fixed libraries cannot offer.

Scored one-play Listening parts cover the second receptive skill.

The differentiator is what happens after submission. Every question returns trap-level feedback - which distractor caught you and why the right answer wins - and results feed per-question-type band tracking on your progress dashboard.

A mock tells you that you scored 6.5; the follow-up tells you the half band is hiding in Not Given questions, which is what next week's practice needs to know.

For the full sitting, the four-skill mock runs all four sections at full length - the whole four-part Listening paper, 60 minutes each of Reading and Writing, and the complete three-part Speaking interview - in about 2 hours 45 minutes, banding each section and ending with an estimated overall band.

The honest caveat: on the free plan it draws on your normal allowances, which is realistically enough for one complete mock; for repeated free full sittings, use KeenIELTS below.

It runs free in any browser with no card; from $7.99 a month or $50 lifetime lifts the volume caps. If Reading is where your mock scores sag - and for most candidates it is - start here.

The generated-passage advantage compounds over a full preparation: by the final month, a fixed-library user has usually seen every paper once, and re-sits quietly inflate their scores. Cold material on demand keeps the thermometer honest to the end - which is precisely when honest measurement matters most.

2. KeenIELTS - Best free full four-section mocks

KeenIELTS is the app to beat for the complete mock experience: all four sections - Listening, Reading, Writing and Speaking - free, timed, with instant results and AI-generated estimates on the productive skills, no card required. No other native app gives away the full sitting.

The trade-offs: review depth is answer-key level on the receptive skills, the Writing and Speaking numbers are automated estimates rather than examiner marks, and the fixed test library means repeat sittings eventually lose their coldness. It is the best free measuring stick here, not a diagnosis engine.

Best for: the full-sitting rehearsal every candidate needs at least twice before test day. Our KeenIELTS alternative page covers what to pair with it for the fixing part.

Book its full mocks like appointments: a quiet room, headphones, paper for notes, and the whole sitting in one pass. The four-section day is a physical endurance event as much as a language test, and the app's real gift is letting you rehearse that endurance free before you pay to do it for real.

3. One IELTS - Best computer-based mock library

One IELTS holds the deepest paid mock library in a native app - a large catalogue of computer-based tests within its 15,000-plus question bank, delivered in an interface that closely mirrors the real computer-delivered exam for Academic and General Training. For candidates taking the computer-based test, that interface familiarity has real value.

The limits: the volume sits behind the subscription, per-question explanations are brief, and reporting favours scores over patterns. The free tier is enough to evaluate the interface, not to train on.

Best for: computer-based candidates who want many cold papers in the real delivery format. The One IELTS alternative comparison sets volume against feedback depth directly.

Spend your first free session purely on mechanics: typing answers against the clock, navigating between questions, flagging and returning. Candidates consistently misjudge how much the interface taxes attention on a first meeting, and it is the cheapest source of lost marks to eliminate before test day.

4. ieltsonlinetests - Best mock volume at zero cost

ieltsonlinetests remains the volume king, and its site puts that huge free library of full papers on a phone browser (we found no official ieltsonlinetests app in either store in September 2026; free tests need a sign-up, and paid AI marking starts at $4.99).

For raw quantity of timed Reading and Listening mocks without paying, nothing here competes, and community statistics show how other candidates scored on each paper.

The familiar drawbacks: heavy ads on the free tier, answer-key review, uneven difficulty across community-era papers, and no per-type tracking. Treat its band estimates as indicative rather than calibrated.

Best for: candidates who have already fixed their weaknesses and want bulk cold papers for final-month conditioning. See our ieltsonlinetests alternative guide for the diagnostic companion.

Filter by the most recent test collections and check each paper's community difficulty rating before sitting it - the library's age range is wide, and calibration drifts at the edges. A score trend across several recent papers means something; a single result on an old community paper means very little.

5. IELTS Prep by British Council - Best official benchmark mocks

Update, September 2026: the IELTS Prep app has been withdrawn from both stores, and the British Council's official mocks now live on IELTS Ready in any phone browser - a 50-minute Mini Mock Test with AI feedback and two full mock tests with feedback and model answers on the free tier, and 40 full practice tests unlocked free when you book with the British Council.

They are the difficulty standard every mock on this list should be checked against. Written by a co-owner of the exam, they are the closest a phone gets to test-day calibration, and the free tier costs nothing.

The constraints are the official pattern: few tests, finished quickly, answer-key feedback, no tracking. Ration them - one early to set your baseline, one late to confirm your third-party practice has transferred honestly.

Best for: calibration checkpoints at the start and end of preparation, for every candidate.

Two sittings, weeks apart, are the honest use: the first sets your baseline before third-party practice begins, the second - on untouched material - verifies that your practice difficulty stayed true. Between those checkpoints, preserve the remaining official papers like the scarce resource they are.

6. IELTS by IDP - Best official mock companion with logistics

IDP's free app wraps official preparation - articles, videos, quizzes, an English self-assessment and, as of September 2026, a Macquarie University course and E2's IELTS preparation on free-then-upgrade access - together with booking, test management and results delivery.

With the British Council app withdrawn, it is the official IELTS-partner app on this list still in both stores, and if IDP administers your test the logistics features make it the natural choice.

Same ceiling as every official product: finite content, right-or-wrong marking, no measurement over time. It benchmarks; it does not train.

Best for: IDP candidates wanting authentic practice tests and their results in one place.

Pair its practice tests with the booking data it already holds: knowing your exact test date turns a mock schedule from vague intention into a countdown, and the app is the one place where both live together.

7. Magoosh IELTS - Best mocks inside a taught course

Magoosh's practice tests - up to 10 full-length mocks on its Premium plans as of September 2026 - come bundled with what the course is really for: over 120 video lessons and structured study schedules, now used mainly in the browser.

If you want teaching first and testing as the checkpoint - rather than mock-first preparation - the integration is the draw, and the explanations accompanying practice questions are clearer than most volume apps manage.

The value cautions: it is a paid subscription at the higher end of this list, the test bank is finite, and pure mock volume is not the product's centre of gravity. Buy it for the course, use the mocks as milestones.

Best for: candidates who want lessons and periodic testing in one subscription - see the Magoosh IELTS alternative comparison for how it pairs with drilling tools.

Schedule its practice tests as course milestones - after each block of lessons rather than on a calendar - so every test measures whether the teaching landed. Used that way, a smaller test bank goes a long way, because each sitting has a specific question to answer.

Section mocks or full four-skill mocks: which do you need?

A section mock - one skill, full length, real timing - is the workhorse of preparation: cheap in time, easy to schedule weekly, and precise about where marks leak. A full four-skill mock is the dress rehearsal: expensive in energy, which is why most candidates need only two or three across an entire preparation.

The efficient pattern is section mocks weekly for the skill you are actively fixing, and full sittings at three moments: the start for a baseline, a month out to test stamina, and the final week to rehearse the day itself.

Daily full mocks are the most common self-inflicted plateau in IELTS preparation, because they consume the very study hours the review was supposed to direct.

How do you make a home mock feel like test day?

Control the conditions the exam will control. One sitting, no pause, phone in another room; Listening on a single play; Reading with the timer visible and no dictionary within reach. Transfer answers exactly as your test format requires, because transfer time is real time the clock will charge you for.

Then add the frictions candidates forget: start at your real test-day hour, sit the sections in exam order, and take only the breaks the schedule allows. A first full rehearsal under honest conditions usually scores half a band below casual practice - far better to meet that gap at home than in the results email.

How often should you take an IELTS mock test?

One full mock every one to two weeks is the productive ceiling for most candidates. A mock is a measurement, and measuring daily changes nothing - the improvement happens in the days between, drilling the weaknesses the last mock exposed.

Candidates who sit mock after mock plateau precisely because their study time is all thermometer and no medicine.

The exception is the final fortnight, when a mock every three or four days builds pacing and stamina for test day. Even then, the review rule holds: every wrong answer gets an explanation you can articulate, or the sitting was half wasted. Our Reading time-management guide covers the pacing the mocks should be training.

Track the trend, not the sitting. Any single mock swings half a band on sleep, passage luck and mood, so keep a dated log and judge yourself on the three-mock moving average. Decisions made on trends - change the drill, book the test, delay a month - are the ones that hold up.

What should you do with a mock test score?

Convert it into a target and a plan, not a mood.

First, map the score against what you actually need with the free Band Score Calculator - a 6.5 means nothing until you know whether your goal needs 7.0 overall or 7.0 in every section, and visa and university thresholds differ on exactly that point more often than candidates expect.

Second, break the misses down by question type, because "Reading 6.5" is unactionable but "three of five misses were matching headings" is a study plan.

The question-type breakdown is worth doing on Listening too, not just Reading: forty listening questions split into four parts with distinct skills, and a 32 out of 40 built on perfect Parts 1 and 2 with a collapsing Part 4 needs completely different work from the same score spread evenly.

Apps that report per-part or per-type results hand you this analysis; with the rest, five minutes with the answer key and a notebook does the same job manually.

Then drill exactly that, somewhere with feedback deep enough to explain the misses - a few sessions of question-type practice is the fastest loop we know - and re-mock in a week or two to verify the number moved.

For the wider toolkit around this loop, see our roundups of the 10 best IELTS preparation apps and the best IELTS websites in 2026.

One more habit closes the loop: write down, before each mock, which question type you expect to fail and why. Comparing the prediction with the result trains the self-awareness the exam ultimately tests - and the day your predictions start landing is usually the day the scores start moving too.

The through-line of this whole list is that a mock is a means, not a milestone. The candidates who improve fastest sit fewer mocks than average and review them harder, because the score was never the product - the named, fixable list of weaknesses was. Choose the app that hands you that list.