# Accelerometer vs DEMS

The clearest difference is in-app purchases: DEMS at none against Accelerometer's 1. DEMS also leads on update cadence (every 4 weeks vs every 5 months) and iOS requirement (15.6 vs 17.6). On price, ads and device support there is nothing between them.

Both are free to download. Accelerometer sells 1 one-off in-app purchase. DEMS asks for nothing beyond the download.

Accelerometer ships an update every 5 months, DEMS every 4 weeks. The most recent releases landed on June 9, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Accelerometer | DEMS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/accelerometer-g-force-meter/id499629589/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 53.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 4 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 2 MB | 28 MB |
| Requires iOS | 17.6 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Jan Halozan](https://appshunter.io/developer/482137824) | [Altruist Technologies Private Limited](https://appshunter.io/developer/1529088214) |

## What reviewers say

### Accelerometer

[App page](https://appshunter.io/ios/app/accelerometer-g-force-meter/id499629589)

Transform your device into a precise 3-axis accelerometer. Monitor live acceleration and G-force readings, record motion data, and export it in various formats for detailed analysis. Ideal for experiments, testing, and engineering.

**Highlights:** Realtime X/Y/Z acceleration, G-force measurement, Record motion sessions, CSV/JSON/XML export, Adjustable sample rate, Max/Min tracking

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Accelerometer Pro | $1.99 | one-time |


### DEMS

[App page](https://appshunter.io/ios/app/dems-secova/id1570096753)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Accelerometer free?

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

### Is DEMS free?

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

### Do Accelerometer or DEMS have ads?

Neither Accelerometer nor DEMS shows ads.

### Which is updated more often, Accelerometer or DEMS?

Accelerometer ships an update every 5 months, and DEMS every 4 weeks. Most recently, Accelerometer was updated on June 9, 2026 and DEMS on September 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.*