TACHS Prep: Practice Tests
Timed subtests, worked answers
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Test day is the first Friday of November, or that Saturday for Brooklyn/Queens and Rockville Centre. Free 28-question diagnostic; six timed subtests. No data collected.
Most TACHS prep starts with drilling. That is the fastest way to waste the time you have, because you cannot study everything at once and you do not yet know what is weak.
This app starts with a 28-question diagnostic, about half an hour. It is not a score. It tells you where to begin, and builds a study plan around your test date.
BUILT FOR THE TEST AS IT IS NOW
The TACHS runs on screen in six timed subtests, one after another: Reading, Written Expression, Mathematics, and three short Ability subtests of figure puzzles. About 2 hours 10 minutes of testing, with a short break between subtests. Inside a subtest you can skip, mark and come back; once you submit a subtest you cannot return to it. There is no penalty for a wrong answer.
Practice here runs by those same rules: six subtests, each on its own clock, answer choices lettered the way the test letters them, a cross-out tool for choices you have ruled out, a highlighter on the reading passages, and a basic calculator in the math subtest, the way the test platform now provides one. The format itself is a lesson, so the shape of the day is already familiar.
THE ABILITY SECTION, DRAWN
Figure matrices, paper folding, figure classification: puzzles most students have never seen before test day. Here they are drawn on screen, hundreds of them, with a worked explanation of the rule behind each one and short lessons on how to read them.
WORKED ANSWERS, NOT ANSWER KEYS
Every question shows the method, step by step, and then checks the answer against it. Get one wrong and you find out why, not just which letter you missed.
MADE FOR iPad, INCLUDING APPLE PENCIL
On iPad the question sits beside a scratch pad you can write on with Apple Pencil or a finger, and your working stays next to the worked explanation afterwards so you can compare them line by line. Reading passages open side by side with their questions.
WHAT IS INSIDE
- 1,499 practice questions across the four sections
- 89 lessons, each with worked examples
- 75 reading and Written Expression passage sets
- Full practice tests in the six-subtest format, about 176 questions each, drawn fresh to the same blueprint every time so a test is worth sitting more than once
- Adaptive Practice, a shorter mode that picks what to ask next from how you are doing and tells you the difficulty level you were working at in each section
- A one-page report your child can send you when they want to show how it is going
The pass unlocks all of it. What stays free is next.
FREE, PERMANENTLY
- The 28-question diagnostic and the study plan it builds
- Your error journal and your progress, always
- 10 new questions a day, up to 150 in total
- Unlimited redo of anything you have already answered
Your progress stays on this device and in your own iCloud, and is never locked: with or without the pass, and after it expires.
THE PASS: ONE PAYMENT, NO AUTO-RENEWAL
It lasts 365 days from the day you buy it, it does not renew itself, and you will not be charged again. No subscription to remember to cancel.
It unlocks every full practice test, the whole lesson library, and the whole question bank with no daily limit.
NO DATA COLLECTED
No account. No sign-up. No analytics, no advertising, no tracking, and nothing sold to anyone. Your work syncs privately between your own devices through your iCloud account and goes nowhere else. The App Privacy section on this page says "Data Not Collected" because that is literally true.
Written for eighth graders sitting the TACHS for the Archdiocese of New York, the Diocese of Brooklyn and Queens, and the Diocese of Rockville Centre. Not affiliated with, or endorsed by, Riverside Insights or any diocese or school.
Ratings & Reviews
New reading, and fairer full tests.
• Twelve new reading passage sets, for 1,499 practice questions in all.
• Full practice tests now draw their reading passages fairly from every set that fits, so the same passage comes back far less often from one test to the next.
• With the new passages, your study plan can recommend up to 8 full practice tests.
The developer, Simple Tree LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Simple Tree LLC
- Size
- 22.4 MB
- Category
- Education
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- 365-Day Pass $39.99
- Copyright
- © 2026 Simple Tree LLC