# performify vs GroundRollCalc

The clearest difference is update cadence: GroundRollCalc at every 5 days against performify's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. performify sells 1 in-app purchase, starting at $2.99 per month and GroundRollCalc sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

performify ships an update every 2 months, GroundRollCalc every 5 days. The most recent releases landed on September 17, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | performify | GroundRollCalc |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 days** |
| Size | 95 MB | 185 MB |
| Requires iOS | **17.0** | 18.5 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Pascal Burlet](https://appshunter.io/developer/1493425854) | [Rob Honeycutt](https://appshunter.io/developer/1820512480) |

## What reviewers say

### performify

[App page](https://appshunter.io/ios/app/performify/id1493425855)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AviatorPro | $2.99 | per month |


### GroundRollCalc

[App page](https://appshunter.io/ios/app/groundrollcalc/id6747908402)

**Features:** Family Sharing

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| GroundRollCalc Pro Monthly | $0.99 | per month |
| GroundRollCalc Pro Yearly | $9.99 | per year |
| Unlock Live GPS | $5.99 | one-time |


## Frequently asked questions

### Is performify free?

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

### Is GroundRollCalc free?

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

### Do performify or GroundRollCalc have ads?

Neither performify nor GroundRollCalc shows ads.

### Which is updated more often, performify or GroundRollCalc?

performify ships an update every 2 months, and GroundRollCalc every 5 days. Most recently, performify was updated on September 17, 2026 and GroundRollCalc 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.*