# Exact Values: Trig Drill — Master sin, cos and tan fast

> Drill trainer for mastering trigonometric values of special angles. (iPhone/iPad app by YUNJIAN NI.)

- Source: https://appshunter.io/ios/app/exact-values-trig-drill/id6771219905 (this page in markdown: same URL + `.md`)
- Developer: [YUNJIAN NI](https://appshunter.io/developer/1894581179)
- Category: Education
- Price: Free (on sale, was $4.99)
- Age rating: 4+
- Requires: iOS 17.0 · 3 MB
- Languages: American English
- Released: 2026-05-21
- Data updated: 2026-07-20
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/exact-values-trig-drill/id6771219905/reviews.md

## What is Exact Values?

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/

## Key features

- 15 special-angle trigonometric values
- 10-question quiz rounds
- Optional 5-second timer
- Toggle radians on/off
- Accepts equivalent answers
- Per-question accuracy charts
- Streak tracking
- Daily reminder notifications

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/exact-values-trig-drill/id6771219905/reviews.md

### 5/5 — Simple and works

*2026-06-01*

My math tutor recommended this to me and it’s actually really helpful

## Frequently asked questions about Exact Values

### What trigonometric values does Exact Values cover?

Exact Values focuses on the sine, cosine, and tangent of special angles: 0°, 30°, 45°, 60°, and 90°, including their radian equivalents. This covers 15 key values for mastery.

### How does Exact Values help with learning?

The app uses a repetition-based drill system, offering 10-question quiz rounds. It provides per-question accuracy charts and streak tracking to identify areas needing more practice and motivate continued study.

### Can I practice at my own pace with Exact Values?

Yes, you can toggle the optional 5-second per-question timer for exam-pace practice. This allows you to adapt the drills to your specific learning needs and preparation goals.

### Does Exact Values work offline?

Absolutely. Exact Values is designed for offline use, meaning you can drill trigonometric values without an internet connection. No login or tracking is required.

### What is the price of Exact Values?

Exact Values is a one-time purchase priced at $4.99. This grants you permanent access to all features without any recurring fees or subscriptions.

### Does Exact Values have ads?

No, Exact Values is completely ad-free. The app prioritizes a distraction-free learning environment, allowing you to focus solely on mastering trigonometric values.

### What devices is Exact Values available on?

Exact Values is built for both iPhone and iPad, ensuring a consistent and optimized experience across Apple's mobile devices. It is suitable for users aged 4 and up.

### How often is Exact Values updated?

The latest version, 1.1.0, was released on June 1, 2026, indicating recent development activity. Updates typically focus on refining the learning experience and ensuring compatibility.

## Version history (last 3 releases)

### 1.2.0 — 2026-07-15

New: spoken answers. The correct value is now read aloud after every question, so the right answer sticks. Toggle it on or off in Settings.

### 1.1.0 — 2026-06-01

Now you can HEAR the answers.

• Spoken answers — the correct value is read aloud after every question, so
  the right answer sticks. Toggle it on or off in Settings, or tap the speaker
  on the quiz screen. Works fully offline, like everything else.
• Polish and small fixes.

Keep that streak going!

### 1.0 — 2026-05-21

No release notes.

## More apps by YUNJIAN NI

- [Numblr](https://appshunter.io/ios/app/numblr/id6762537456)

All apps by YUNJIAN NI: https://appshunter.io/developer/1894581179

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-20.*