# Modpro AI vs Calendus

The clearest difference is in-app purchases: Modpro AI at none against Calendus's 4. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Calendus sells 4 in-app purchases, starting at $12.00 per month. Modpro AI asks for nothing beyond the download.

Modpro AI ships an update weekly, Calendus every 5 days. The most recent releases landed on October 12, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Modpro AI | Calendus |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (119 ratings)](https://appshunter.io/ios/app/modpro-ai/id6755011876/reviews)** | — |
| Number of ratings | **119** | — |
| Positive reviews | 97.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 5 days** |
| Monetization | Free | — |
| Size | 93 MB | 58 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [ModPro AI INC](https://appshunter.io/developer/1851335653) | [Carlos Gasperi Ramirez](https://appshunter.io/developer/1883109349) |

## What reviewers say

### Modpro AI

[App page](https://appshunter.io/ios/app/modpro-ai/id6755011876)

This app serves as a central hub for automotive and motorcycle enthusiasts to track, organize, and optimize their custom builds. It offers professional build tracking, AI-powered recommendations, performance management, and a community forum for inspiration and connection.

**Highlights:** Professional build tracking, AI build advisor, Performance & spec management, Community garage, Part logging and management

**In-app purchases:** none


### Calendus

[App page](https://appshunter.io/ios/app/calendus/id6760194897)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Calendus Monthly | $12.00 | per month |
| Calendus Pro Monthly | $25.00 | per month |
| Calendus Yearly | $119.99 | per year |
| Calendus Pro Yearly | $250.00 | per year |


## Frequently asked questions

### Is Modpro AI free?

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

### Is Calendus free?

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

### Do Modpro AI or Calendus have ads?

Neither Modpro AI nor Calendus shows ads.

### Which is updated more often, Modpro AI or Calendus?

Modpro AI ships an update weekly, and Calendus every 5 days. Most recently, Modpro AI was updated on October 12, 2026 and Calendus on September 20, 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.*