# IDC Spring Calculator vs Zeus Material Management

The clearest difference is rating: IDC Spring Calculator at 2.6 against Zeus Material Management's 1.3. IDC Spring Calculator also leads on review sentiment (22% vs 7%). Zeus Material Management's advantage is ratings volume (74 vs 12) and iOS requirement (13.0 vs 17.0). On price, update cadence, 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.

IDC Spring Calculator holds the better App Store score, 2.6 against 1.3. That said, the two scores are not equally well evidenced: Zeus Material Management has 74 ratings behind it against 12, so its average is the more settled of the two. Written reviews point the same way: 22% of IDC Spring Calculator's written reviews are positive against 7% of Zeus Material Management's.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | IDC Spring Calculator | Zeus Material Management |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.6 (12 ratings)](https://appshunter.io/ios/app/idc-spring-calculator/id970455550/reviews)** | [1.3 (74 ratings)](https://appshunter.io/ios/app/zeus-material-management/id1564799793/reviews) |
| Number of ratings | 12 | **74** |
| Positive reviews | **22.2% of reviews** | 6.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free | Free |
| Size | 1 MB | 152 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Zen Software, LLC](https://appshunter.io/developer/570584501) | [SDI Inc.](https://appshunter.io/developer/1521493905) |

## What reviewers say

### IDC Spring Calculator

[App page](https://appshunter.io/ios/app/idc-spring-calculator/id970455550)

This application allows users to engineer springs on demand. It provides access to a variety of spring types and materials, backed by a company with multiple manufacturing plants for efficient delivery.

**Highlights:** On-demand spring engineering, Variety of spring types, Multiple material options, Access to company manufacturing locations, Streamlined ordering process

**Features:** macOS Compatibility

**In-app purchases:** none


### Zeus Material Management

[App page](https://appshunter.io/ios/app/zeus-material-management/id1564799793)

This app streamlines indirect supply chain management for MRO and PPE. It offers mobile tools for inventory tracking, cycle counting, and issuing, alongside eProcurement software for tail spend management. AI-driven inventory optimization helps reduce obsolete stock.

**Highlights:** Mobile inventory cycle counting, Issuing and delivery tracking, Industrial repair and warranty management, AI-enabled inventory optimization, eProcurement for tail spend, MRO expertise, Enterprise buying visibility

**In-app purchases:** none


## Frequently asked questions

### Is IDC Spring Calculator free?

IDC Spring Calculator is free to download, with no in-app purchases.

### Is Zeus Material Management free?

Zeus Material Management is free to download, with no in-app purchases.

### Which has better reviews, IDC Spring Calculator or Zeus Material Management?

IDC Spring Calculator is rated higher. IDC Spring Calculator averages 2.6 out of 5 from 12 ratings, while Zeus Material Management averages 1.3 from 74 ratings.

### Do IDC Spring Calculator or Zeus Material Management have ads?

Neither IDC Spring Calculator nor Zeus Material Management shows ads.

### Which is updated more often, IDC Spring Calculator or Zeus Material Management?

IDC Spring Calculator ships an update every 2 months, and Zeus Material Management every 2 months. Most recently, IDC Spring Calculator was updated on November 1, 2026 and Zeus Material Management on November 3, 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.*