# Ersa TRACE vs Sparkify Documentation

The clearest difference is in-app purchases: Ersa TRACE at none against Sparkify Documentation's 2. Ersa TRACE also leads on iOS requirement (12.0 vs 18.0). Sparkify Documentation's advantage is update cadence (weekly vs every 5 months). On price, ads and device support there is nothing between them.

Both are free to download. Sparkify Documentation sells 2 in-app purchases, starting at $19.99 per month. Ersa TRACE asks for nothing beyond the download.

Ersa TRACE ships an update every 5 months, Sparkify Documentation weekly. The most recent releases landed on October 2, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Ersa TRACE | Sparkify Documentation |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Weekly** |
| Monetization | Free | — |
| Size | 38 MB | 227 MB |
| Requires iOS | **12.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Ersa GmbH](https://appshunter.io/developer/1484598243) | [Onstruc UG (haftungsbeschraenkt)](https://appshunter.io/developer/1532766278) |

## What reviewers say

### Ersa TRACE

[App page](https://appshunter.io/ios/app/ersa-trace/id1552856743)

This app enables smart operation of an IoT soldering station via smartphone or web application. It provides real-time temperature display, parameter control for single or multiple stations, and extensive traceability functions.

**Highlights:** Real-time temperature display, Target temperature setting, Soldering parameter control, Multi-station management, Web application integration, Traceability functions

**In-app purchases:** none


### Sparkify Documentation

[App page](https://appshunter.io/ios/app/sparkify-documentation/id6758299561)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Persönliche Cloud | $19.99 | per month |
| Persönliche Cloud+ | $49.99 | per month |


## Frequently asked questions

### Is Ersa TRACE free?

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

### Is Sparkify Documentation free?

Sparkify Documentation is free to download, with in-app purchases available.

### Do Ersa TRACE or Sparkify Documentation have ads?

Neither Ersa TRACE nor Sparkify Documentation shows ads.

### Which is updated more often, Ersa TRACE or Sparkify Documentation?

Ersa TRACE ships an update every 5 months, and Sparkify Documentation weekly. Most recently, Ersa TRACE was updated on October 2, 2026 and Sparkify Documentation on October 1, 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.*