# Spread Rate Calculator vs PennDOT

The clearest difference is update cadence: PennDOT at every 14 months against Spread Rate Calculator's every 59 months. Spread Rate Calculator's advantage is device support (3 vs 1) and iOS requirement (8.0 vs 17.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Spread Rate Calculator ships an update every 59 months, PennDOT every 14 months. The most recent releases landed on October 6, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Spread Rate Calculator | PennDOT |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 59 months | **Every 14 months** |
| Size | 211 MB | 21 MB |
| Requires iOS | **8.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [BearCat Mfg](https://appshunter.io/developer/1437293606) | [Executive Office of The Commonwealth of Pennsylvania](https://appshunter.io/developer/1482180304) |

## What reviewers say

### Spread Rate Calculator

[App page](https://appshunter.io/ios/app/spread-rate-calculator/id1437293607)

**Features:** macOS Compatibility

**In-app purchases:** none


### PennDOT

[App page](https://appshunter.io/ios/app/penndot-sample-id/id1497528603)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Spread Rate Calculator free?

Spread Rate Calculator is free to download, with no in-app purchases.

### Is PennDOT free?

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

### Do Spread Rate Calculator or PennDOT have ads?

Neither Spread Rate Calculator nor PennDOT shows ads.

### Which is updated more often, Spread Rate Calculator or PennDOT?

Spread Rate Calculator ships an update every 59 months, and PennDOT every 14 months. Most recently, Spread Rate Calculator was updated on October 6, 2026 and PennDOT on October 19, 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.*