# Bellows Design Software vs Dice Roller

The clearest difference is ads: Bellows Design Software at none against Dice Roller's shown. Dice Roller's advantage is update cadence (every 3 days vs monthly). On price, rating, ratings volume and in-app purchases there is nothing between them.

Both are free to download. Bellows Design Software sells 2 in-app purchases, starting at $34.99 per month and Dice Roller 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 — 5.0 for Bellows Design Software against 5.0 for Dice Roller. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Bellows Design Software ships an update monthly, Dice Roller every 3 days. The most recent releases landed on October 19, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Bellows Design Software | Dice Roller |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/bellows-design-software/id1635945221/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/dice-roller-rpg-dice-box/id6795367318/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Every 3 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 26 MB | 7 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [V PUGAZHENTHI](https://appshunter.io/developer/491898049) | [振山 董](https://appshunter.io/developer/1226504908) |

## What reviewers say

### Bellows Design Software

[App page](https://appshunter.io/ios/app/bellows-design-software/id1635945221)

This application assists in designing metallic bellows type expansion joints according to EJMA Standards. It allows users to input various design parameters and movement inputs to ensure safe and reliable usage. The software performs comprehensive calculations and checks against EJMA conditions for different bellows configurations and materials.

**Highlights:** Design metallic bellows expansion joints, Input internal diameter, convolution height, ply thickness, pitch, and number of plies, Set design pressure, temperature, and movements, Check design parameters against EJMA Standards, Calculations for single and dual bellows, Includes vibration and bellows forming methods, Calculations for tie rods, lugs plate, and hinges

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| All Access for Bellows | $34.99 | per month |
| All Access for Bellows Design | $299.99 | per year |


### Dice Roller

[App page](https://appshunter.io/ios/app/dice-roller-rpg-dice-box/id6795367318)

Transform your device into a quick and intuitive dice roller for board games and RPGs. Experience realistic physics, synchronized sound, and haptic feedback with clear display of individual results and totals. Keep track of your recent rolls for convenience.

**Highlights:** Supports D4, D6, D8, D10, D20 dice, Roll up to 12 dice simultaneously, Realistic physics-based dice motion, Synchronized sound and haptic feedback, Displays individual results and total, History of 100 most recent rolls

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Dice Box Pro | $1.99 | one-time |


## Frequently asked questions

### Is Bellows Design Software free?

Bellows Design Software is free to download, with in-app purchases available.

### Is Dice Roller free?

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

### Which has better reviews, Bellows Design Software or Dice Roller?

Bellows Design Software and Dice Roller are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do Bellows Design Software or Dice Roller have ads?

Dice Roller shows ads; Bellows Design Software does not.

### Which is updated more often, Bellows Design Software or Dice Roller?

Bellows Design Software ships an update monthly, and Dice Roller every 3 days. Most recently, Bellows Design Software was updated on October 19, 2026 and Dice Roller on October 10, 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.*