# Digital Servicebook vs Microdyno

The clearest difference is review sentiment: Microdyno at 100% against Digital Servicebook's 50%. Digital Servicebook's advantage is price (Free vs $8.99). On update cadence, ads, in-app purchases and device support there is nothing between them.

Digital Servicebook is free to download; Microdyno costs $8.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Digital Servicebook ships an update every 5 weeks, Microdyno every 6 weeks. The most recent releases landed on September 17, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | Digital Servicebook | Microdyno |
| --- | --- | --- |
| Price | **Free** | $8.99 |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 6 weeks |
| Monetization | **Free** | Paid |
| Size | 47 MB | 70 MB |
| Requires iOS | 15.2 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Digitalservicebog](https://appshunter.io/developer/1145953517) | [Stefan Hurzlmeier](https://appshunter.io/developer/969804263) |

## What reviewers say

### Digital Servicebook

[App page](https://appshunter.io/ios/app/digital-servicebook/id1303387504)

Manage all your vehicle's service records and history digitally. Easily track maintenance, inspections, and important car data. Avoid odometer fraud and keep your car's warranty valid with automated reminders.

**Highlights:** Digital vehicle service records, Track maintenance and inspections, Store car data (insurance, mileage), Avoid odometer fraud, Automated service reminders, Online access to history

**Features:** macOS Compatibility

**In-app purchases:** none


### Microdyno

[App page](https://appshunter.io/ios/app/microdyno/id6749821546)

Transform your iPhone into a professional dynamometer. This app uses advanced audio analysis to precisely measure vehicle performance and torque in real-time without expensive hardware. It offers detailed vehicle profiles, weather integration, and professional data visualization.

**Highlights:** Real-time performance measurement (PS, Nm, RPM, speed), Over 100 pre-configured vehicle profiles, Automatic weather data integration for correction, Harmonic editing for cleaner results, Professional data visualization and export, Customizable vehicle profile creation, Measurement history tracking

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

**In-app purchases:** none


## Frequently asked questions

### Is Digital Servicebook free?

Digital Servicebook is free to download, with no in-app purchases.

### Is Microdyno free?

Microdyno costs $8.99, with no in-app purchases.

### Do Digital Servicebook or Microdyno have ads?

Neither Digital Servicebook nor Microdyno shows ads.

### Which is updated more often, Digital Servicebook or Microdyno?

Digital Servicebook ships an update every 5 weeks, and Microdyno every 6 weeks. Most recently, Digital Servicebook was updated on September 17, 2026 and Microdyno on September 11, 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.*