# GhostCalc vs Amend

The clearest difference is in-app purchases: GhostCalc at none against Amend's 2. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Amend sells 2 in-app purchases, starting at $9.99 per month. GhostCalc asks for nothing beyond the download.

GhostCalc ships an update weekly, Amend every 4 days. The most recent releases landed on October 6, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | GhostCalc | Amend |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (6 ratings)](https://appshunter.io/ios/app/amend-ai-tutor/id6789777590/reviews)** |
| Number of ratings | — | **6** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 4 days** |
| Monetization | — | Free with in-app purchases |
| Size | 25 MB | 71 MB |
| Requires iOS | **15.5** | 16.4 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 12+ | 12+ |
| Developer | [RAFAEL RAEHMAN NAGIEV](https://appshunter.io/developer/1892037141) | [Rithvik Tripuraneni](https://appshunter.io/developer/6789777592) |

## What reviewers say

### GhostCalc

[App page](https://appshunter.io/ios/app/ghostcalc/id6775283334)

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

**In-app purchases:** none


### Amend

[App page](https://appshunter.io/ios/app/amend-ai-tutor/id6789777590)

This AI-powered whiteboard tutor helps students understand STEM concepts. It analyzes handwritten work, provides feedback, and guides study priorities. Get live voice assistance and track progress through structured lessons and practice sessions.

**Highlights:** Handwritten input with finger or Apple Pencil, Feedback on handwritten and typed work, Course and material-based practice, Review readiness estimates, Live voice assistance, Progress tracking

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| BoardTutor Plus | $9.99 | per month |
| BoardTutor Pro | $19.99 | per month |


## Frequently asked questions

### Is GhostCalc free?

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

### Is Amend free?

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

### Do GhostCalc or Amend have ads?

Neither GhostCalc nor Amend shows ads.

### Which is updated more often, GhostCalc or Amend?

GhostCalc ships an update weekly, and Amend every 4 days. Most recently, GhostCalc was updated on October 6, 2026 and Amend on October 14, 2026.

---

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