Every study plan app for test prep promises the same thing: your score, higher, with less effort. They can't all be right, so here's the comparison checklist I actually use when someone asks me which one to trust.
Diagnostics first. A real plan starts by measuring where you are. If the app asks for your target score and current level, then generates a plan, that's a good sign. If it drops you into "Week 1: Basics" with zero questions asked, it's a content library, not a plan. Walk away.
Section balance is second. IELTS and TOEFL both test four sections, and your weakest one decides your result. The app should weight your weak sections heavier, automatically, based on how your practice goes. If it treats all four sections equally for everyone, it's not personalizing anything.
Third, mock test integration. Plans without scheduled mocks are wishful thinking. Look for full length practice tests every one to two weeks with band or scaled score estimates, plus a visible history so you can see the trend line. Fourth, task specificity. "Study vocabulary" is not a task. "Learn 20 academic collocations, then use 10 in sentences" is a task. The more specific the daily tasks, the more likely you actually do them. I know that sounds obvious. Most apps still fail it.
Fifth, and this is the one everyone overlooks: exit criteria. A good plan tells you when you're ready to book the test. Vague plans keep you studying forever, which is great for the app's retention metrics and terrible for your application timeline. You want a plan with a finish line.
Run two or three options against this list before committing eight weeks to one. And remember the eligibility angle too: the best plan in the world means little if it's aimed at the wrong target, so checking your target schools' requirements with a test score university eligibility checker app comes first. Or skip the comparison shopping entirely: the 8-week study plan at internationalstudyhelp.fyi is built on a diagnostic, with mocks and a finish line included.