Exact Values: Trig Drill

by YUNJIAN NI · Education · Free

On the App Store since May 2026 · Data updated 2026-10-24

Exact Values: Trig Drill is made and published by YUNJIAN NI. AppBrain is an independent app data site and isn't affiliated with YUNJIAN NI. The app name, icon, screenshots and description belong to YUNJIAN NI and are shown as published on the App Store.

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Last updated: July 15, 2026
Size: 3.01 MB

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Store listing

By YUNJIAN NI, from the App Store

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Screenshots by YUNJIAN NI, from the the App Store listing

Description by YUNJIAN NI Written by the developer, not by AppBrain. Click to read.

Exact Values is a focused drill-trainer for the trigonometric values every maths student needs to know cold: sin, cos, and tan at 0°, 30°, 45°, 60°, 90° (and their radian equivalents).

WHY THIS APP
• 15 values × repetition = mastery. That's the whole secret.
• Daily reminder nudges you to a 2-minute drill — that's all it takes.
• Offline. No login. No ads. No tracking.
• One-time purchase, $4.99. Yours forever.

FEATURES
• 10-question quiz rounds drawn from the 15 special-angle values
• Optional 5-second per-question timer for exam-pace practice
• Toggle radians on or off (π/6, π/4, π/3, π/2)
• Accepts both 1/√2 and √2/2 — equivalents are equivalents
• Per-question accuracy charts so you see what to drill next
• Streak tracking — keep the chain alive
• Daily reminder notification at the time you choose
• Built for iPhone and iPad

PRIVACY
Your stats live on your device. We collect nothing. No accounts, no servers, no analytics. Open the app, drill the values, close the app.

Companion to https://www.exact-values.com/

Official page on the App Store

Safety and technology

Found in the app by AppBrain

Price: Free
App size: 3.01 MB
Content rating: Everyone

Technologies used by Exact Values: Trig Drill

Releases

Updates seen on the App Store

Version: 1.2.0
Launched: May 2026

No changelog data

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About the app and developer

About Exact Values: Trig Drill

Exact Values: Trig Drill is an education app developed by YUNJIAN NI.

What is the rating of Exact Values: Trig Drill?

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Is Exact Values: Trig Drill free?

Exact Values: Trig Drill is free. The app size is 3.01 MB. The latest version available is 1.2.0. The last update was on July 15, 2026.

What are the requirements for Exact Values: Trig Drill?

The app has a content rating of Everyone. The app has been available on the App Store since May 2026.

Developer information for YUNJIAN NI

YUNJIAN NI

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