# Minus Board vs Approval Studio

The clearest difference is in-app purchases: Approval Studio at none against Minus Board's 4. Minus Board's advantage is update cadence (every 3 weeks vs every 10 months) and iOS requirement (9.1 vs 18.4). On price, ads and device support there is nothing between them.

Both are free to download. Minus Board sells 4 in-app purchases, starting at $9.99 per month. Approval Studio asks for nothing beyond the download.

Minus Board ships an update every 3 weeks, Approval Studio every 10 months. The most recent releases landed on October 21, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Minus Board | Approval Studio |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.3 (3 ratings)](https://appshunter.io/ios/app/minus-board-a-sharable-whiteboard/id1170370265/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 10 months |
| Monetization | Free with in-app purchases | — |
| Size | 26 MB | 3 MB |
| Requires iOS | **9.1** | 18.4 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Launch Platform LLC](https://appshunter.io/developer/1586861720) | [HiTech Service LLC](https://appshunter.io/developer/1124417233) |

## What reviewers say

### Minus Board

[App page](https://appshunter.io/ios/app/minus-board-a-sharable-whiteboard/id1170370265)

This app provides a simple digital canvas for drawing and idea sharing. Collaborate in real-time with others by sharing a link, allowing them to view your creations instantly. It's designed for seamless idea expression and global collaboration.

**Highlights:** Finger and Apple Pencil drawing, Two-finger erasing gesture, Real-time drawing sharing, Slack integration, Idea expression and sharing

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Real-time sharing | $9.99 | per month |
| Minus Board 30 Days | $2.99 | one-time |
| Minus Board 90 Days | $4.99 | one-time |
| Minus Board 180 Days | $9.99 | one-time |


### Approval Studio

[App page](https://appshunter.io/ios/app/approval-studio/id6747336607)

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

**In-app purchases:** none


## Frequently asked questions

### Is Minus Board free?

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

### Is Approval Studio free?

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

### Do Minus Board or Approval Studio have ads?

Neither Minus Board nor Approval Studio shows ads.

### Which is updated more often, Minus Board or Approval Studio?

Minus Board ships an update every 3 weeks, and Approval Studio every 10 months. Most recently, Minus Board was updated on October 21, 2026 and Approval Studio on October 18, 2026.

---

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