Short answer: the best IELTS practice platform in 2026 is IELTSbiz, because its practice never runs out, every wrong answer comes back explained, and your estimated band is tracked for each question type so you can see what is working. ieltsonlinetests has the biggest free library of full mocks, KeenIELTS the most generous free AI marking, and British Council IELTS Ready the most authentic practice.
Disclosure: IELTSbiz is our platform, ranked first. The ranking rests on three tests you can run in one free session on each platform.
An IELTS practice platform is a site or app built around doing questions - Reading and Listening sets, Writing tasks, Speaking prompts - and getting them marked. It differs from a course, which teaches first, and from a resource site, which you only read.
The best practice platforms are measured by what happens after you answer.
| Platform | Practice volume | Feedback | Free access | Price (2026) |
|---|---|---|---|---|
| IELTSbiz | Unlimited fresh Reading; Listening, Writing, Speaking | Trap named on every wrong answer; four criteria for W and S | Every paper within a monthly allowance | From $7.99/month or from $50 lifetime |
| ieltsonlinetests | Very large mock library | Answer keys; AI marking paid | Free mocks with ads | AI marking from $4.99 |
| KeenIELTS | Full mocks | AI scores for Writing and Speaking | Free, ad-supported | Free |
| British Council IELTS Ready | Official mocks | Feedback and model answers | Mini Mock plus two full mocks | Free; more with a booking |
| One IELTS | Large computer-based question bank | Answer keys and scores | Free practice with limits | In-app purchases |
| TestGlider | Full mocks | AI-graded in under a minute | Free trial tests | Plans and correction credits |
How we ranked these practice platforms
Feedback depth first: after a wrong answer, do you learn why? Volume second: will the platform run out before you are ready? Measurement third: can you see your level moving, and by what? Then realism - does it feel like the computer-delivered test - and free access.
Feedback outranks volume for a reason you can feel. Do a hundred True/False/Not Given questions with only an answer key and you get faster at your existing mistakes. Do twenty where each wrong answer names the trap - a qualifier you skipped, a synonym that was not one - and the next twenty go differently.
1. IELTSbiz - Best IELTS practice platform
IELTSbiz generates fresh Cambridge-style Reading passages on demand, organised by all 11 question types, so practice never runs out and you can drill one format until it stops costing marks. Every wrong answer comes back with trap-level feedback. A full 40-mark Reading test under a 60-minute clock checks your timing when you are ready.
The other papers are on the same account: Listening with one play, marked to a band, and drillable by question type; Writing marked on four criteria by the Writing Checker; Speaking marked from what you said.
Your band per question type appears on the free progress dashboard. Every paper is free within a monthly allowance with no card; Pro is from $7.99/month or from $50 lifetime.
The fair drawbacks: Reading passages are newly generated in the Cambridge style rather than retired past papers, so pair it with official tests for authenticity, and there is no offline mode.
2. ieltsonlinetests - Best free mock library
The largest free collection of timed full Reading and Listening mocks, with AI Writing and Speaking marking from $4.99. Ideal for stamina and timing in volume. Feedback on Reading and Listening is answer-key only and the free tier carries ads. See the ieltsonlinetests review.
3. KeenIELTS - Best free AI-marked practice
Free and ad-supported on web, Android and iPhone, with full mocks and AI scoring of Writing and Speaking. On a zero budget it gives the most marked practice across all four papers.
4. British Council IELTS Ready - Best official practice
The most authentic practice available: official mocks with feedback and model answers, a free Mini Mock and two full mocks on the free tier, more after a British Council booking. Save the full mocks for checkpoints rather than daily drilling. See the IELTS Ready review.
5. One IELTS - Best phone question bank
A native app with a large computer-based question bank, free practice within limits and in-app purchases for more. Good for drilling on the move; feedback is mostly answer keys and scores.
6. TestGlider - Best for fast full-mock grading
Full mocks graded by AI in under a minute, Writing and Speaking included, with free trial tests and paid plans and credits. Best used for periodic whole-test checks. See the TestGlider review.
A weekly practice plan using these platforms
Five days a week, one marked set on your weakest Reading or Listening question type. Twice a week, one Writing task and one Speaking answer, marked.
Every second weekend, one full timed mock - IELTS Ready or ieltsonlinetests - then a review session as long as the mock itself. Check your per-type trend each Sunday and move your daily set to whatever is lowest.
For a free-only version of this plan, see our best free IELTS practice websites.