# Rivet 04 vs jAMSKOOL Sing Trainer

The clearest difference is device support: jAMSKOOL Sing Trainer at 2 against Rivet 04's —. jAMSKOOL Sing Trainer also leads on iOS requirement (15.1 vs 17.6). On price and in-app purchases there is nothing between them.

Both are free to download. Rivet 04 sells 3 one-off in-app purchases and jAMSKOOL Sing Trainer sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Rivet 04 | jAMSKOOL Sing Trainer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | — | No |
| Update frequency | — | Every 2 weeks |
| Size | 4 MB | 44 MB |
| Requires iOS | 17.6 | **15.1** |
| Devices | — | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Joe Topjian](https://appshunter.io/developer/1860697112) | [Mike Binnendyk](https://appshunter.io/developer/1893040944) |

## What reviewers say

### Rivet 04

[App page](https://appshunter.io/ios/app/rivet-04-comb/id6758967505)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tip - Small | $0.99 | one-time |
| Tip - Medium | $1.99 | one-time |
| Tip - Large | $3.99 | one-time |


### jAMSKOOL Sing Trainer

[App page](https://appshunter.io/ios/app/jamskool-sing-trainer/id6766595771)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Sing Trainer | $9.99 | one-time |


## Frequently asked questions

### Is Rivet 04 free?

Rivet 04 is free to download, with in-app purchases available.

### Is jAMSKOOL Sing Trainer free?

jAMSKOOL Sing Trainer is free to download, with in-app purchases available.

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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.*