# Response vs Accelerometer ∞

The clearest difference is in-app purchases: Response at none against Accelerometer ∞'s 2. Response also leads on ads (none vs shown) and update cadence (every 5 days vs every 2 weeks). On price and device support there is nothing between them.

Both are free to download. Accelerometer ∞ sells 2 in-app purchases, starting at $1.99 per month. Response asks for nothing beyond the download.

Response ships an update every 5 days, Accelerometer ∞ every 2 weeks. The most recent releases landed on September 21, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Response | Accelerometer ∞ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.3 (61 ratings)](https://appshunter.io/ios/app/accelerometer/id6621273087/reviews)** |
| Number of ratings | — | **61** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 5 days** | Every 2 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 55 MB | 16 MB |
| Requires iOS | **8.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [ECU=SHOP](https://appshunter.io/developer/1389703440) | [Fawkes Wei](https://appshunter.io/developer/432767536) |

## What reviewers say

### Response

[App page](https://appshunter.io/ios/app/response/id1481063226)

**Features:** Vision Pro support

**In-app purchases:** none


### Accelerometer ∞

[App page](https://appshunter.io/ios/app/accelerometer/id6621273087)

Visualize device motion data in real-time with dynamic graphs. Analyze sensor information, calibrate your device, and explore various possibilities. This utility app offers a unique perspective on your device's movement.

**Highlights:** Real-time motion data visualization, Stunning graph displays, Sensor calibration, Data analysis, Explore endless possibilities

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $1.99 | per month |
| Pro Lifetime | $9.99 | one-time |


## Frequently asked questions

### Is Response free?

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

### Is Accelerometer ∞ free?

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

### Do Response or Accelerometer ∞ have ads?

Accelerometer ∞ shows ads; Response does not.

### Which is updated more often, Response or Accelerometer ∞?

Response ships an update every 5 days, and Accelerometer ∞ every 2 weeks. Most recently, Response was updated on September 21, 2026 and Accelerometer ∞ on September 25, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*