# Force and Motion vs ProgCalc

The clearest difference is update cadence: ProgCalc at fortnightly against Force and Motion's every 63 months. Force and Motion's advantage is iOS requirement (11.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

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

Force and Motion ships an update every 63 months, ProgCalc fortnightly. The most recent releases landed on October 12, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Force and Motion | ProgCalc |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 63 months | **Fortnightly** |
| Size | 24 MB | 12 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Science Education Institute](https://appshunter.io/developer/1439710468) | [Neopoise](https://appshunter.io/developer/563901528) |

## What reviewers say

### Force and Motion

[App page](https://appshunter.io/ios/app/force-and-motion/id1439710469)

**Features:** macOS Compatibility

**In-app purchases:** none


### ProgCalc

[App page](https://appshunter.io/ios/app/progcalc/id1441551265)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Force and Motion free?

Force and Motion is free to download, with no in-app purchases.

### Is ProgCalc free?

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

### Do Force and Motion or ProgCalc have ads?

Neither Force and Motion nor ProgCalc shows ads.

### Which is updated more often, Force and Motion or ProgCalc?

Force and Motion ships an update every 63 months, and ProgCalc fortnightly. Most recently, Force and Motion was updated on October 12, 2026 and ProgCalc on October 7, 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.*