The Daily-Practice
TestGlider Alternative
TestGlider is strong at what it is built for: full-length, AI-graded mock tests with a band score back in about two minutes. But a mock tells you where you are, not what to fix. IELTSbiz is the loop between mocks — unlimited fresh passages, a named trap on every wrong answer, and a band tracked for each of the 11 reading types.
The short answer
TestGlider is built for full-length AI-graded mock tests and is good at it — a real sitting under exam timing with a band back in minutes. IELTSbiz is built for the days in between, which is where bands actually move: a fresh passage on demand in a fifteen-minute window, a named trap on every wrong answer, and an estimated band tracked for each of the 11 reading question types. The two are complements rather than substitutes — a mock every week or two, daily drilling in between.
- A mock measures progress; drilling creates it. You need both, on different cadences.
- A full sitting is a 60-minute commitment — an IELTSbiz set fits a short study window.
- Trap-level feedback comes with every session rather than being metered by credits.
- IELTSbiz also has full papers: a 40-question Reading test and a guided four-skill mock.
Choose IELTSbiz if…
- You want the daily loop between mock tests
- You have 15 minutes, not 60
- You want feedback that is not metered by credits
- You want to know which type is dragging the band
Choose TestGlider if…
- You want full-length AI-graded mock rehearsal
- You want an exam-timed sitting with a fast band
- You are close to test day and want rehearsal volume
4
IELTS papers practised and marked
11
reading question types, drillable alone
1,200
essays in our published grading study
Free
every paper, within an allowance, no card
Why a mock-test platform needs a practice loop beside it
TestGlider delivers full sittings under real exam timing, with model answers and explanations afterwards, and meters deeper feedback through correction credits as of 2026. That is excellent rehearsal. The problem is what happens on the days between:
A score is a measurement, not a diagnosis
A mock returns a band. It rarely tells you that Matching Headings is what is dragging it down, or that the same distractor type keeps catching you. IELTSbiz names the trap on every wrong answer and tracks a band per question type.
Practice that never runs out
Mock libraries are finite, and sitting a full test is a 60-minute commitment. IELTSbiz generates a fresh Cambridge-difficulty passage on demand, so a 15-minute study window is still a useful one.
No credits metering your feedback
Deeper corrections on TestGlider are metered by credits as of 2026. On IELTSbiz, trap-level feedback comes with every reading session on the free tier — the explanation is the product, not an add-on.
IELTSbiz vs TestGlider: feature comparison
A side-by-side look at what each platform offers serious IELTS candidates, as of 2026. Features and pricing change — check each provider for the latest before you decide.
| Feature | IELTSbiz | TestGlider |
|---|---|---|
| Built around | Daily drilling between mocks | Full-length AI-graded mock tests |
| Session length | A single passage, any time | Full sittings under exam timing |
| Reading passages | AI-generated, unlimited and fresh | Mock-test library |
| Reading feedback | Named trap on every wrong answer | Model answers and explanations |
| Band tracking | Per question type, over time | Per mock-test attempt |
| Feedback limits | Included with every session | Correction credits (as of 2026) |
| Price | Free within monthly allowances; Pro $6.99/mo or $29 lifetime | Free trial tests; paid membership |
Why serious test-takers choose IELTSbiz
The days between mocks are where bands move
Sitting mocks measures progress; drilling creates it. IELTSbiz gives you an unlimited supply of fresh passages so every study session produces new material rather than a re-read.
Every wrong answer names the trap
IELTS Reading distractors are designed: Partial Truth, Extreme Language, Opposite Meaning, Outside Text. IELTSbiz labels which one caught you, so the same mistake stops repeating.
A band per question type, not per sitting
One overall mock band hides the type that is costing you. IELTSbiz tracks all 11 separately, so you always know what to work on next.
They genuinely pair well
A sensible routine is a TestGlider full mock every week or two for exam-conditions rehearsal, with daily IELTSbiz drilling and a free Writing Checker in between.
About IELTSbiz
IELTSbiz is an AI-powered IELTS preparation platform built around one idea: measured progress you can trust. It covers all four papers. Reading and Listening are written fresh rather than drawn from a bank of past papers, and are marked against an answer key — the same answers always produce the same band, so a rise in your score is progress rather than a different marker on a different day. Writing and Speaking are marked criterion by criterion for an estimated band — accurate enough to aim at, and reported as an estimate rather than an examiner’s verdict.
Reading goes deepest, because it is where most candidates quietly lose marks. Every wrong answer is labelled with the trap that caused it — Partial Truth, Extreme Language, Opposite Meaning, Outside Text, Distractor Word or Temporal Confusion — and shown beside the line of the passage that settles it. Your estimated band is then tracked separately for each of the 11 reading question types, so “reading is my weak skill” becomes “Matching Headings is my weak type”. When you want the whole paper, there is a full 40-question Reading test under a 60-minute clock, and a guided four-skill mock.
That measurement focus runs through everything we build. Our AI grading was validated in a study of 1,200 Writing Task 2 essays against certified examiners, and every guide on the site is written by our named editorial team and checked against official sources — you can read exactly how in our editorial policy. We sell trust and measurement, not hype: no band guarantee, and no accuracy percentage we have not published the method for.
What costs nothing: all four papers, within an allowance. Reading and Listening practice are free every day with full trap-level feedback, and Writing and Speaking are marked against the official criteria free every month. A 7-day trial raises those allowances rather than being the only thing that unlocks them — when it ends they drop back, they do not drop to zero. The one exception is the Band 8 Writing Trainer, whose marking is Pro only and which the trial does not include. Pro is $6.99/month or $29 once for lifetime access. The band-score calculator, the daily Word Coach and the Speaking cue cards are free to use. IELTSbiz is independent and is not affiliated with IDP, the British Council, or Cambridge, who jointly own and deliver the IELTS test.
Frequently asked questions
Is there a free TestGlider alternative?
IELTSbiz is free to start with no credit card, and trap-level reading feedback is included on the free tier rather than metered by credits. TestGlider offers free trial tests, with ongoing access on a paid membership as of 2026.
Does IELTSbiz have full mock tests like TestGlider?
Yes — IELTSbiz includes a full 40-question Reading test and a guided four-skill mock. But its focus is the daily practice loop: single passages you can drill by question type, with feedback that names the trap behind each wrong answer.
What does IELTSbiz do that a mock-test platform does not?
It diagnoses rather than scores. Every wrong answer is labelled with the specific trap that caught you, and your estimated band is tracked separately for each of the 11 reading question types, so you can see which one to fix next.
Can I use TestGlider and IELTSbiz together?
Yes, and many candidates do. Use TestGlider for periodic full-length rehearsal under exam timing, and IELTSbiz for the unlimited daily drilling, trap-level feedback and per-type tracking in between.
Find out which paper is costing you the band
Sit one set, get it back marked question by question, and see the number move. Free to start, no card.
Start Free — No Card RequiredCompare, learn, and keep practising
- Start unlimited AI reading practiceGenerate a fresh Cambridge-style passage with trap-level feedback in seconds
- Free AI Writing CheckerBand estimate on all four Task 2 criteria, with the sentences that cost you it
- IELTS Listening practice, Parts 1–4One play only, numbered 1–40, marked to a band the way the real paper is
- Sit a full four-skill mockListening, Reading, Writing and Speaking in one guided sitting, with a band per section
- All 11 IELTS Reading question typesThe pillar guide to every type and its strategy
- Free IELTS band score calculatorConvert your raw score to a band and set a target
- Best TestGlider alternatives comparedThe full roundup, with where each option actually fits
- TestGlider review (2026)Our honest 7.5/10 review — what it does well and where it thins out