# Model Inventory vs Trinvo

The clearest difference is review sentiment: Trinvo at 100% against Model Inventory's 24%. Trinvo also leads on rating (5.0 vs 3.1). Model Inventory's advantage is update cadence (every 4 weeks vs every 2 months) and iOS requirement (9.0 vs 17.5). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Trinvo holds the better App Store score, 5.0 against 3.1. Both are backed by a comparable volume of ratings — 9 and 4 respectively. Written reviews point the same way: 24% of Model Inventory's written reviews are positive against 100% of Trinvo's.

Model Inventory ships an update every 4 weeks, Trinvo every 2 months. The most recent releases landed on October 20, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Model Inventory | Trinvo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.1 (9 ratings)](https://appshunter.io/ios/app/model-inventory/id669218378/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/trinvo/id6744944562/reviews)** |
| Number of ratings | **9** | 4 |
| Positive reviews | 24.4% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 weeks** | Every 2 months |
| Monetization | Free | Free |
| Size | 10 MB | 1 MB |
| Requires iOS | **9.0** | 17.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Woodland Scenics](https://appshunter.io/developer/528641487) | [Cabott](https://appshunter.io/developer/1810081666) |

## What reviewers say

### Model Inventory

[App page](https://appshunter.io/ios/app/model-inventory/id669218378)

This app helps model railroad enthusiasts organize their collections. Track locomotives, rolling stock, structures, and accessories with custom categories, purchase details, photos, and notes. It's ideal for managing your collection and for use at train shows.

**Highlights:** Track locomotives, rolling stock, structures, scenery, accessories, Create custom categories, Log purchase date and cost, Store photos, Add notes, Useful for train shows and swap meets

**Features:** macOS Compatibility

**In-app purchases:** none


### Trinvo

[App page](https://appshunter.io/ios/app/trinvo/id6744944562)

Streamline inventory management and conduct physical counts directly from your smart device. Easily share or upload your results to a chosen destination.

**Highlights:** Inventory management, Process counts, Cycle counts, Physical counts, Smart device operation, Results sharing, Data upload

**In-app purchases:** none


## Frequently asked questions

### Is Model Inventory free?

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

### Is Trinvo free?

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

### Which has better reviews, Model Inventory or Trinvo?

Trinvo is rated higher. Model Inventory averages 3.1 out of 5 from 9 ratings, while Trinvo averages 5.0 from 4 ratings.

### Do Model Inventory or Trinvo have ads?

Neither Model Inventory nor Trinvo shows ads.

### Which is updated more often, Model Inventory or Trinvo?

Model Inventory ships an update every 4 weeks, and Trinvo every 2 months. Most recently, Model Inventory was updated on October 20, 2026 and Trinvo on October 24, 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.*