# Reverse Singing Sing Backwards vs Echo

The clearest difference is ads: Reverse Singing Sing Backwards at none against Echo's shown. Reverse Singing Sing Backwards also leads on update cadence (fortnightly vs every 5 weeks). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Reverse Singing Sing Backwards sells 2 in-app purchases, starting at $2.99 per 7 days and Echo sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Reverse Singing Sing Backwards ships an update fortnightly, Echo every 5 weeks. The most recent releases landed on October 9, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Reverse Singing Sing Backwards | Echo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Fortnightly** | Every 5 weeks |
| Size | 27 MB | 51 MB |
| Requires iOS | **18.4** | 18.5 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Pawel Chmiel](https://appshunter.io/developer/498209576) | [MOMIN M K ALRAMLAWI](https://appshunter.io/developer/1842851810) |

## What reviewers say

### Reverse Singing Sing Backwards

[App page](https://appshunter.io/ios/app/reverse-singing-sing-backwards/id6753982089)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly access | $2.99 | per 7 days |
| Annual access | $19.99 | per year |


### Echo

[App page](https://appshunter.io/ios/app/echo-audio-reverser/id6766336972)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly plan | $1.99 | per month |
| Yearly plan | $19.99 | per year |
| Echo Pro - Lifetime | $29.99 | one-time |


## Frequently asked questions

### Is Reverse Singing Sing Backwards free?

Reverse Singing Sing Backwards is free to download, with in-app purchases available.

### Is Echo free?

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

### Do Reverse Singing Sing Backwards or Echo have ads?

Echo shows ads; Reverse Singing Sing Backwards does not.

### Which is updated more often, Reverse Singing Sing Backwards or Echo?

Reverse Singing Sing Backwards ships an update fortnightly, and Echo every 5 weeks. Most recently, Reverse Singing Sing Backwards was updated on October 9, 2026 and Echo on September 25, 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.*