# IDC Spring Calculator vs PPSNTX Ops

The clearest difference is update cadence: PPSNTX Ops at every 2 days against IDC Spring Calculator's every 2 months. PPSNTX Ops also leads on iOS requirement (15.1 vs 17.0). On price, ads, in-app purchases and device support 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 ships an update every 2 months, PPSNTX Ops every 2 days. The most recent releases landed on October 10, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | IDC Spring Calculator | PPSNTX Ops |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.6 (12 ratings)](https://appshunter.io/ios/app/idc-spring-calculator/id970455550/reviews)** | — |
| Number of ratings | **12** | — |
| Positive reviews | 22.2% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 days** |
| Monetization | Free | — |
| Size | 1 MB | 25 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Zen Software, LLC](https://appshunter.io/developer/570584501) | [Premier Property Services of North Texas](https://appshunter.io/developer/1891210595) |

## 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


### PPSNTX Ops

[App page](https://appshunter.io/ios/app/ppsntx-ops/id6761739912)

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

**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 PPSNTX Ops free?

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

### Do IDC Spring Calculator or PPSNTX Ops have ads?

Neither IDC Spring Calculator nor PPSNTX Ops shows ads.

### Which is updated more often, IDC Spring Calculator or PPSNTX Ops?

IDC Spring Calculator ships an update every 2 months, and PPSNTX Ops every 2 days. Most recently, IDC Spring Calculator was updated on October 10, 2026 and PPSNTX Ops on September 17, 2026.

---

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