# Grade Corner vs Practice Lock

The clearest difference is price: Grade Corner at Free against Practice Lock's $0.99. Grade Corner also leads on update cadence (weekly vs every 5 months) and ratings volume (28K vs 2K). Practice Lock's advantage is chart position (#147 vs unranked) and device support (4 vs 2). On rating, review sentiment, ads and in-app purchases there is nothing between them.

Grade Corner is free to download; Practice Lock costs $0.99 up front. Grade Corner sells 4 in-app purchases, starting at $3.99 per month and Practice Lock sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.9 for Grade Corner against 4.8 for Practice Lock. That said, the two scores are not equally well evidenced: Grade Corner has 28K ratings behind it against 2K, so its average is the more settled of the two. Written reviews are what separate them: 82% of Grade Corner's written reviews are positive against 87% of Practice Lock's.

Grade Corner ships an update weekly, Practice Lock every 5 months. The most recent releases landed on September 25, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Grade Corner | Practice Lock |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[4.9 (28K ratings)](https://appshunter.io/ios/app/grade-corner/id1441670302/reviews)** | [4.8 (2K ratings)](https://appshunter.io/ios/app/practice-lock/id1555509600/reviews) |
| Number of ratings | **28K** | 2K |
| Positive reviews | 81.6% of reviews | **87.1% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 5 months |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | — | **#147** |
| Size | 91 MB | 4 MB |
| Requires iOS | 16.4 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Lucky Dog Collective, LLC](https://appshunter.io/developer/1441670301) | [James Randolph](https://appshunter.io/developer/1159117556) |

## What reviewers say

### Grade Corner

[App page](https://appshunter.io/ios/app/grade-corner/id1441670302)

Access your academic performance on the go. View grades, assignments, schedules, and attendance. Communicate with teachers and track your progress throughout the school year.

**Highlights:** Check grades and class categories, View upcoming assignments and due dates, Track attendance records, Email teachers directly, Filter assignments by category, View past grades, Supports multiple students

**Features:** Family Sharing, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $3.99 | per month |
| Six Month Subscription | $12.99 | per 6 months |
| Annual Subscription | $19.99 | per year |
| Family Plan | $29.99 | per year |

**What reviewers like**

- 👍 Easy to use and understand
- 🚀 Quick access to grades and schedules
- 💡 Customizable color themes
- 🔒 Secure login process
- 👍 Convenient for parents and students

**What reviewers complain about**

- 🐛 Occasional login issues
- 🐛 Slow loading times
- 💡 Need for more features (grade notifications, schedule view for future days)

**Reported bugs**

- Login screen freezes
- No schedule information displayed

**Requested features**

- Grade notifications
- Schedule view for future days
- Ability to delete or rearrange classes
- Integration with other platforms (e.g., Google Classroom)


### Practice Lock

[App page](https://appshunter.io/ios/app/practice-lock/id1555509600)

**Currently charting:** #147 Top Paid · Education (US App Store)

Master combination locks with a realistic digital simulator. Practice opening locks with helpful hints and step-by-step guidance. Customize your lock's appearance and choose your own or randomly generated combinations.

**Highlights:** Realistic lock unlocking simulation, Helpful hints for common mistakes, Step-by-step walkthrough mode, Customizable dial colors, Generate random combinations, Choose custom combination ranges

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Customize Lock | $0.99 | one-time |

**What reviewers like**

- 👍 Helpful for learning to open lockers
- 🚀 Efficient at teaching lock-opening skills
- 🎨 Customizable lock colors and types
- 💡 Useful practice for middle/high school students
- 🎉 Fun and engaging app

**What reviewers complain about**

- 💰 Paid app, could be better if free
- 🤔 Sensitivity issues with lock turning
- 🐛 Occasional left/right confusion in instructions

**Reported bugs**

- Lock turning too fast at times
- Inconsistent behavior compared to real-life locks

**Requested features**

- Add sound effects when unlocking
- Include a randomize option to reset the lock combination
- Provide more lock types and difficulty levels


## Frequently asked questions

### Is Grade Corner free?

Grade Corner is free to download, with in-app purchases available.

### Is Practice Lock free?

Practice Lock costs $0.99, and also offers in-app purchases.

### Which has better reviews, Grade Corner or Practice Lock?

Grade Corner is rated higher. Grade Corner averages 4.9 out of 5 from 28K ratings, while Practice Lock averages 4.8 from 2K ratings.

### Do Grade Corner or Practice Lock have ads?

Neither Grade Corner nor Practice Lock shows ads.

### Which is updated more often, Grade Corner or Practice Lock?

Grade Corner ships an update weekly, and Practice Lock every 5 months. Most recently, Grade Corner was updated on September 25, 2026 and Practice Lock on September 23, 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.*