# ThreadFon Multi vs Simco Engineers

ThreadFon Multi and Simco Engineers are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

ThreadFon Multi ships an update monthly, Simco Engineers every 3 weeks. The most recent releases landed on September 9, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | ThreadFon Multi | Simco Engineers |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.8 (4 ratings)](https://appshunter.io/ios/app/threadfon-multi-thread-calc/id1602169811/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 43 MB | 56 MB |
| Requires iOS | **12.0** | 13.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Dmitriy Trofimov](https://appshunter.io/developer/1598378710) | [AHASOLAR TECHNOLOGIES LIMITED](https://appshunter.io/developer/1632224285) |

## What reviewers say

### ThreadFon Multi

[App page](https://appshunter.io/ios/app/threadfon-multi-thread-calc/id1602169811)

This tool provides detailed insights into metric, inch, pipe, and trapezoidal cylindrical threads based on ISO and ASME standards. It helps users efficiently determine essential thread specifications for various thread types.

**Highlights:** ISO Metric thread support, Unified Inch thread support, Pipe thread support, Trapezoidal thread support, Based on ISO 965 and ASME B1.1 standards, Determines fundamental thread parameters

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

**In-app purchases:** none


### Simco Engineers

[App page](https://appshunter.io/ios/app/simco-engineers/id6443891485)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ThreadFon Multi free?

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

### Is Simco Engineers free?

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

### Do ThreadFon Multi or Simco Engineers have ads?

Neither ThreadFon Multi nor Simco Engineers shows ads.

### Which is updated more often, ThreadFon Multi or Simco Engineers?

ThreadFon Multi ships an update monthly, and Simco Engineers every 3 weeks. Most recently, ThreadFon Multi was updated on September 9, 2026 and Simco Engineers on September 19, 2026.

---

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