# Acc.elerometer vs Vi

The clearest difference is update cadence: Vi at every 2 months against Acc.elerometer's every 11 months. Vi also leads on iOS requirement (14.1 vs 26.0). 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.

Acc.elerometer ships an update every 11 months, Vi every 2 months. The most recent releases landed on October 20, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Acc.elerometer | Vi |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/accelerometer/id1631020465/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 18 MB | 4 MB |
| Requires iOS | 26.0 | **14.1** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Pantiukhin Andrei](https://appshunter.io/developer/1585711909) | [Pisharodi Medicals Inc.](https://appshunter.io/developer/1699815137) |

## What reviewers say

### Acc.elerometer

[App page](https://appshunter.io/ios/app/accelerometer/id1631020465)

Visualize and record device motion with live sensor readings. Analyze acceleration, rotation, magnetic field, and attitude. Export data as CSV for further analysis.

**Highlights:** Live sensor readings, Record experiments, Analyze results on iPhone/iPad, Capture motion on Apple Watch, Export data as CSV, Six measurement types

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


### Vi

[App page](https://appshunter.io/ios/app/vi-cap/id6455041541)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Acc.elerometer free?

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

### Is Vi free?

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

### Do Acc.elerometer or Vi have ads?

Neither Acc.elerometer nor Vi shows ads.

### Which is updated more often, Acc.elerometer or Vi?

Acc.elerometer ships an update every 11 months, and Vi every 2 months. Most recently, Acc.elerometer was updated on October 20, 2026 and Vi on October 9, 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.*