# Periodic Timer + Custom Sounds vs lead ECG

The clearest difference is price: lead ECG at Free against Periodic Timer + Custom Sounds's $4.99. lead ECG also leads on in-app purchases (none vs 3) and update cadence (every 3 weeks vs every 2 months). On ads and device support there is nothing between them.

lead ECG is free to download; Periodic Timer + Custom Sounds costs $4.99 up front. Periodic Timer + Custom Sounds sells 3 one-off in-app purchases. lead ECG asks for nothing beyond the download.

Periodic Timer + Custom Sounds ships an update every 2 months, lead ECG every 3 weeks. The most recent releases landed on November 11, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Periodic Timer + Custom Sounds | lead ECG |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | **[3.9 (76 ratings)](https://appshunter.io/ios/app/periodic-timer-plus-custom-sounds/id1175807581/reviews)** | — |
| Number of ratings | **76** | — |
| Positive reviews | 54.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 17 MB | 47 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Vladimir Kelin](https://appshunter.io/developer/933241655) | [徐州永康电子科技有限公司](https://appshunter.io/developer/1095223244) |

## What reviewers say

### Periodic Timer + Custom Sounds

[App page](https://appshunter.io/ios/app/periodic-timer-plus-custom-sounds/id1175807581)

This app provides a simple, repeating interval timer that works in the background. It offers customizable sounds, vibration, and flexible output modes for various activities like fitness, cooking, and learning. The interface is designed to be minimalist and distraction-free.

**Highlights:** Repeating interval timer, Customizable sounds and vibration, Works in the background, Long intervals up to 99 hours, Multiple timer output modes, Shake to start functionality

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tip a Banana | $0.99 | one-time |
| Tip a Coffee | $3.99 | one-time |
| Donate: Bust the project! | $9.99 | one-time |

**What reviewers like**

- 👍 Simple and easy to use
- 👍 Perfect for workouts
- 👍 No ads, no nonsense
- 👍 Good app, like it
- 👍 Very practical

**What reviewers complain about**

- 😩 Nagging to write reviews
- 😩 Doesn't work in background
- 😩 Not loud enough
- 😩 Vibration too short
- 😩 Paid version lacks features

**Reported bugs**

- Doesn't work in background
- Timer doesn't work for over 59 minutes on watch
- Custom alert audio not working
- Alarm not working after payment
- App doesn't open

**Requested features**

- More sound options
- Ability to set alarm for a time of day
- Explanation for changing display mode
- Simultaneous timers
- Ability to set start/end times and weekdays


### lead ECG

[App page](https://appshunter.io/ios/app/lead-ecg/id6769673964)

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

**In-app purchases:** none


## Frequently asked questions

### Is Periodic Timer + Custom Sounds free?

Periodic Timer + Custom Sounds costs $4.99, and also offers in-app purchases.

### Is lead ECG free?

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

### Do Periodic Timer + Custom Sounds or lead ECG have ads?

Neither Periodic Timer + Custom Sounds nor lead ECG shows ads.

### Which is updated more often, Periodic Timer + Custom Sounds or lead ECG?

Periodic Timer + Custom Sounds ships an update every 2 months, and lead ECG every 3 weeks. Most recently, Periodic Timer + Custom Sounds was updated on November 11, 2026 and lead ECG on November 5, 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.*