# Proof Workshop: Math Major — Build proofs step by step

> Build proofs step by step (iPhone/iPad app by INPHIL CHOI.)

- Source: https://appshunter.io/ios/app/proof-workshop-math-major/id6816328454 (this page in markdown: same URL + `.md`)
- Developer: [INPHIL CHOI](https://appshunter.io/developer/6785766361)
- Category: Education, Reference
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 15.0 · 20 MB
- Languages: Korean
- Released: 2026-10-05
- Data updated: 2026-10-07

## What is Proof Workshop?

From reading proofs to building them.

Proof Workshop covers core undergraduate math-major courses with concept cards, worked examples, practice problems and a proof builder. No account, no sign-up — your progress stays on your device.

PROOF BUILDER (the core)
- Stack shuffled proof steps in the right order
- Each proof hides a plausible but wrong trap card built from a common misconception
- Checking tells you how many steps are right and exactly where it first goes wrong
- Stuck? A hint places just the next step

AUTOMATIC REVIEW OF MISSED CONCEPTS
- Concepts behind wrong answers collect in your review list
- Re-read the concept card, then prove it with a different problem
- Intervals grow 1, 3, 7 days as you get it right

8 SUBJECTS, 32 UNITS
Calculus, Sets and Logic, Linear Algebra, Real Analysis, Abstract Algebra, Topology, Complex Analysis, Differential Equations
- 96 concept cards, 160 practice problems with solutions, 32 proof builds
- Math is typeset on-device and works offline
- Numeric answers accept any equal form: 3/4 or 0.75
- All concepts, problems and proofs are original — no textbook or exam content copied

FREE AND FULL ACCESS
- The first unit of every subject is free, proof builder included
- Full Access is a one-time purchase that opens units 2-4 of every subject. Not a subscription; it never auto-renews
- Restore it on any device with the same Apple ID

PRIVACY
- No account, no ads, no analytics
- Progress is stored only on your device and never transmitted

Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://inphilchoi.github.io/mathmajor-privacy/
Contact: creativelab.choi@gmail.com

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Full Access | $4.99 | one-time |


## Is Proof Workshop safe?

Not enough ratings yet to assess Proof Workshop.

## Is Proof Workshop legit?

Proof Workshop: Math Major appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Proof Workshop is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 1 release)

### 1.0.0 — 2026-10-05

No release notes.

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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 2026-10-07.*