# MathTappers vs ZipGrade

The clearest difference is rating: ZipGrade at 4.9 against MathTappers's 3.1. ZipGrade also leads on update cadence (every 6 weeks vs every 33 months) and ratings volume (36K vs 80). MathTappers's advantage is monetization model (free vs free with in-app purchases). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. MathTappers sells 1 one-off in-app purchase and ZipGrade sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ZipGrade holds the better App Store score, 4.9 against 3.1. That said, the two scores are not equally well evidenced: ZipGrade has 36K ratings behind it against 80, so its average is the more settled of the two. Written reviews point the same way: 67% of MathTappers's written reviews are positive against 86% of ZipGrade's.

MathTappers ships an update every 33 months, ZipGrade every 6 weeks. The most recent releases landed on September 29, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | MathTappers | ZipGrade |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.1 (80 ratings)](https://appshunter.io/ios/app/mathtappers-estimatefractions/id353282053/reviews) | **[4.9 (36K ratings)](https://appshunter.io/ios/app/zipgrade/id635077270/reviews)** |
| Number of ratings | 80 | **36K** |
| Positive reviews | 66.7% of reviews | **85.7% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 33 months | **Every 6 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 10 MB | 30 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Joshua Smith](https://appshunter.io/developer/292463291) | [ZipGrade LLC](https://appshunter.io/developer/582826575) |

## What reviewers say

### MathTappers

[App page](https://appshunter.io/ios/app/mathtappers-estimatefractions/id353282053)

This app helps learners develop an intuitive understanding of fractions by relating them to halves and using estimation in addition and subtraction problems. It emphasizes sense-making through visual models before procedural mastery, and is best used alongside classroom activities.

**Highlights:** Intuitive fraction understanding, Estimation for addition/subtraction, Visual models for fractions, Sense-making before procedures, Supports classroom learning

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Expanded Version | $0.99 | one-time |


### ZipGrade

[App page](https://appshunter.io/ios/app/zipgrade/id635077270)

Instantly grade multiple-choice tests and quizzes using your device's camera. This app offers a fast and accurate way for educators to assess student work, with features for organizing and exporting results. It provides immediate feedback to inform lesson planning and assignments.

**Highlights:** Instant grading with device camera, Supports multiple choice tests and quizzes, Organizes and exports results (PDF, Excel), Free answer sheet templates available, Companion website for data management, Stores results by student, subject, and quiz

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Add 1 year of use | $6.99 | one-time |

**What reviewers like**

- 🚀 Efficient grading
- 👍 Instant feedback for students
- 📊 Detailed data analysis
- 💰 Affordable subscription
- ⏱️ Time-saving

**What reviewers complain about**

- 🐛 Inconsistent scanning issues
- 🔍 Difficulty navigating interface
- 🔢 Lack of class/student grouping options
- 🖼️ Poor image quality for student names

**Reported bugs**

- Scanning issues with flat surface detection
- Incorrect answer marking due to eraser marks

**Requested features**

- Ability to change question point values in bulk
- Option to create/edit answer keys on website
- Support for non-multiple choice question types
- Improved data export/integration with other systems


## Frequently asked questions

### Is MathTappers free?

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

### Is ZipGrade free?

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

### Which has better reviews, MathTappers or ZipGrade?

ZipGrade is rated higher. MathTappers averages 3.1 out of 5 from 80 ratings, while ZipGrade averages 4.9 from 36K ratings.

### Do MathTappers or ZipGrade have ads?

Neither MathTappers nor ZipGrade shows ads.

### Which is updated more often, MathTappers or ZipGrade?

MathTappers ships an update every 33 months, and ZipGrade every 6 weeks. Most recently, MathTappers was updated on September 29, 2026 and ZipGrade on October 14, 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.*