# Physics Formulas vs ScholarHack

The clearest difference is in-app purchases: ScholarHack at none against Physics Formulas's 2. ScholarHack also leads on update cadence (every 6 days vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Physics Formulas sells 2 in-app purchases, starting at $3.99 per 7 days. ScholarHack asks for nothing beyond the download.

Physics Formulas ships an update every 2 months, ScholarHack every 6 days. The most recent releases landed on November 9, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Physics Formulas | ScholarHack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/scholarhack-sat-vocabulary/id6797127331/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 days** |
| Monetization | — | Free |
| Size | 38 MB | 29 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Mobin Akhter](https://appshunter.io/developer/1812505286) | [Weifeng Cheng](https://appshunter.io/developer/6797127333) |

## What reviewers say

### Physics Formulas

[App page](https://appshunter.io/ios/app/physics-formulas-physref/id6757826240)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Access | $3.99 | per 7 days |
| Lifetime Access | $49.99 | one-time |


### ScholarHack

[App page](https://appshunter.io/ios/app/scholarhack-sat-vocabulary/id6797127331)

Master essential SAT Reading & Writing vocabulary with adaptive practice. Learn word roots and prefixes to understand word meanings, and test your knowledge with speed challenges and duels. Track your progress from learning to mastery.

**Highlights:** Adaptive vocabulary practice, Mastery tracking system, Prefix and root word learning, Speed challenges, Real-time vocabulary duels, Progress tracking

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Physics Formulas free?

Physics Formulas is free to download, with in-app purchases available.

### Is ScholarHack free?

ScholarHack is free to download, with no in-app purchases.

### Do Physics Formulas or ScholarHack have ads?

Neither Physics Formulas nor ScholarHack shows ads.

### Which is updated more often, Physics Formulas or ScholarHack?

Physics Formulas ships an update every 2 months, and ScholarHack every 6 days. Most recently, Physics Formulas was updated on November 9, 2026 and ScholarHack on October 31, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*