# Messprotokoll vs Circuit Planner

The clearest difference is price: Messprotokoll at Free against Circuit Planner's $2.99. Messprotokoll also leads on iOS requirement (12.0 vs 15). Circuit Planner's advantage is in-app purchases (none vs 8) and update cadence (every 2 weeks vs every 2 months). On ads and device support there is nothing between them.

Messprotokoll is free to download; Circuit Planner costs $2.99 up front. Messprotokoll sells 8 one-off in-app purchases. Circuit Planner asks for nothing beyond the download.

Messprotokoll ships an update every 2 months, Circuit Planner every 2 weeks. The most recent releases landed on September 14, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Messprotokoll | Circuit Planner |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Positive reviews | — | 60.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | — | Paid |
| Size | 50 MB | 7 MB |
| Requires iOS | **12.0** | 15 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Reiko Klein](https://appshunter.io/developer/984943326) | [Axel Hauschild](https://appshunter.io/developer/981831700) |

## What reviewers say

### Messprotokoll

[App page](https://appshunter.io/ios/app/messprotokoll/id984943327)

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Messprotokoll Firmenlogo | $2.99 | one-time |
| Messprotokoll Import | $2.99 | one-time |
| Messprotokoll Scanner | $2.99 | one-time |
| Messprotokoll Export | $2.99 | one-time |
| Messprotokoll Anlagenmessung | $4.99 | one-time |
| Messprotokoll Gerätemessung | $4.99 | one-time |
| Messprotokoll Pro | $8.99 | one-time |
| Complete | $17.99 | one-time |


### Circuit Planner

[App page](https://appshunter.io/ios/app/circuit-planner/id6472896392)

Design professional IEC circuit diagrams with a user-friendly interface. Access a vast library of symbols, utilize automatic connection features, and export your plans in PDF format. Ideal for electrical engineering projects.

**Highlights:** User-friendly interface for circuit diagram creation, 1056 integrated IEC circuit diagram symbols, Automatic connection system for precise wiring, Export diagrams in PDF format, Supports A4, A3, A2 formats with up to 20 drawing sheets, Automatic backup of project data

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Messprotokoll free?

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

### Is Circuit Planner free?

Circuit Planner costs $2.99, with no in-app purchases.

### Do Messprotokoll or Circuit Planner have ads?

Neither Messprotokoll nor Circuit Planner shows ads.

### Which is updated more often, Messprotokoll or Circuit Planner?

Messprotokoll ships an update every 2 months, and Circuit Planner every 2 weeks. Most recently, Messprotokoll was updated on September 14, 2026 and Circuit Planner on September 22, 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.*