# Viper PDR vs FlatWrench

The clearest difference is price: Viper PDR at Free against FlatWrench's $3.99. Viper PDR also leads on rating (5.0 vs 4.0) and iOS requirement (13.0 vs 15.1). FlatWrench's advantage is update cadence (every 10 days vs monthly). On ratings volume, ads, in-app purchases and device support there is nothing between them.

Viper PDR is free to download; FlatWrench costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Viper PDR holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

Viper PDR ships an update monthly, FlatWrench every 10 days. The most recent releases landed on October 20, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Viper PDR | FlatWrench |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/viper-pdr/id6502194482/reviews)** | [4.0 (2 ratings)](https://appshunter.io/ios/app/flatwrench/id6756835445/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 10 days** |
| Monetization | **Free** | Paid |
| Size | 24 MB | 34 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Robert Williams](https://appshunter.io/developer/912248588) | [Selden Endes](https://appshunter.io/developer/1863178907) |

## What reviewers say

### Viper PDR

[App page](https://appshunter.io/ios/app/viper-pdr/id6502194482)

This software offers real-time solutions for the PDR repair industry, streamlining operations and reducing costs. It seamlessly integrates with leading estimating platforms for efficient data exchange and accurate job costing.

**Highlights:** Real-time PDR solutions, Streamlined operations, Reduced costs and time savings, Integration with estimating platforms, Accurate job costing, Automated repair order management

**Features:** macOS Compatibility

**In-app purchases:** none


### FlatWrench

[App page](https://appshunter.io/ios/app/flatwrench/id6756835445)

This app helps automotive technicians track their efficiency on flat-rate jobs. It automatically calculates productivity against an 8-hour workday and provides detailed performance history. Designed for shop environments with features like a dark theme and large touch targets.

**Highlights:** Track flagged hours per job, Automatic efficiency calculation, View metrics by pay period, Complete job history search, Dark theme for shop use, Large touch targets, Secure cloud sync

**In-app purchases:** none


## Frequently asked questions

### Is Viper PDR free?

Viper PDR is free to download, with no in-app purchases.

### Is FlatWrench free?

FlatWrench costs $3.99, with no in-app purchases.

### Which has better reviews, Viper PDR or FlatWrench?

Viper PDR is rated higher. Viper PDR averages 5.0 out of 5 from 1 ratings, while FlatWrench averages 4.0 from 2 ratings.

### Do Viper PDR or FlatWrench have ads?

Neither Viper PDR nor FlatWrench shows ads.

### Which is updated more often, Viper PDR or FlatWrench?

Viper PDR ships an update monthly, and FlatWrench every 10 days. Most recently, Viper PDR was updated on October 20, 2026 and FlatWrench on October 17, 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.*