# hash camera vs SoundRPM

hash camera and SoundRPM are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. hash camera sells 4 in-app purchases, starting at $2.99 per month and SoundRPM sells 5 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | hash camera | SoundRPM |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (2 ratings)](https://appshunter.io/ios/app/soundrpm-engine-tachometer/id6787410484/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | — | Weekly |
| Monetization | — | Free with in-app purchases |
| Size | 2 MB | 9 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [XIN SHI](https://appshunter.io/developer/6777072331) | [春城 贾](https://appshunter.io/developer/1501061855) |

## What reviewers say

### hash camera

[App page](https://appshunter.io/ios/app/hash-camera/id6777072329)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro | $2.99 | per month |
| Business | $9.99 | per month |
| Pro Annual | $24.99 | per year |
| Business Annual | $99.99 | per year |


### SoundRPM

[App page](https://appshunter.io/ios/app/soundrpm-engine-tachometer/id6787410484)

Estimate engine RPM using your iPhone's microphone without any extra hardware. Ideal for classic cars, motorcycles, and small engines, it provides real-time readings with confidence levels and measurement history.

**Highlights:** Estimate engine RPM from sound, Supports 2-stroke and 4-stroke engines, Choose cylinder count and RPM range, Real-time RPM display, Confidence level for readings, Save measurement history

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Member | $3.99 | per month |
| Annual Membership | $8.99 | per year |
| Annual Member | $8.99 | per year |
| Lifetime member | $5.99 | one-time |
| Lifetime | $29.99 | one-time |


## Frequently asked questions

### Is hash camera free?

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

### Is SoundRPM free?

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

### Do hash camera or SoundRPM have ads?

Neither hash camera nor SoundRPM shows ads.

---

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