# ZIG SIM vs Stocksmith Forge

The clearest difference is in-app purchases: ZIG SIM at none against Stocksmith Forge's 4. ZIG SIM also leads on update cadence (every 9 days vs every 3 months) and iOS requirement (13.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Stocksmith Forge sells 4 in-app purchases, starting at $0.99 per year. ZIG SIM asks for nothing beyond the download.

ZIG SIM ships an update every 9 days, Stocksmith Forge every 3 months. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | ZIG SIM | Stocksmith Forge |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (7 ratings)](https://appshunter.io/ios/app/zig-sim/id1112909974/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 87.5% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 3 months |
| Monetization | Free | — |
| Size | 4 MB | 23 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [1-10, INC.](https://appshunter.io/developer/1447864635) | [Jelle Oostmeijer](https://appshunter.io/developer/1866165096) |

## What reviewers say

### ZIG SIM

[App page](https://appshunter.io/ios/app/zig-sim/id1112909974)

This app allows physical prototyping by sending smartphone sensor data to other devices via UDP socket communication. It enables verification of wearable devices and IoT without electronic kits. Supports various sensors and communication protocols.

**Highlights:** Smartphone sensor data transmission, UDP socket communication, Wearable device verification, IoT prototyping, Supports OSC and JSON messaging, Adjustable communication rates (1-60 FPS)

**Features:** macOS Compatibility

**In-app purchases:** none


### Stocksmith Forge

[App page](https://appshunter.io/ios/app/stocksmith-forge/id6777135717)

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| NFC Spool Scanning Yearly | $0.99 | per year |
| Stocksmith Pro Yearly | $4.99 | per year |
| NFC Spool Scanning | $7.99 | one-time |
| Stocksmith Pro | $59.99 | one-time |


## Frequently asked questions

### Is ZIG SIM free?

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

### Is Stocksmith Forge free?

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

### Do ZIG SIM or Stocksmith Forge have ads?

Neither ZIG SIM nor Stocksmith Forge shows ads.

### Which is updated more often, ZIG SIM or Stocksmith Forge?

ZIG SIM ships an update every 9 days, and Stocksmith Forge every 3 months. Most recently, ZIG SIM was updated on October 26, 2026 and Stocksmith Forge on October 25, 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.*