Comparison

Periodic Timer + vs lead ECG

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Periodic Timer +

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
Read full description

Keep track of time without being distracted by the device! Simple and easy timer that repeats at your chosen interval. FEATURES - Many sounds to select + the ability to add custom ones. - Up to 4 pinned and up to 5 recent Quick Start items. - Long intervals - up to 99 hours! - Vibration, if the sound is off. - Works in the background. - 3 timer output modes: intervals, total time, countdown. - You can cancel or pause the timer with help of a notification. - Flexibility and minimalism. - Shake To Start - can be enabled in settings. - Prevent Lockscreen - another useful setting, the screen will not lock, while the timer is running. USE CASES Here is a list of use cases based on the real feedback: Fitness and health: - Stretching - Stationary bicycle (interval training) - On a treadmill - For HIIT - Jogging - Timed medication - Boxing Cooking - While frying potatoes - Roasting steaks - Checking an oven or a grill to prevent burning Learning & science - Foreign language learning - As a lab timer - Periodic data collection - Speech training - Presentation timing Other - Mindfulness - Communication - To have a sense of time flying away :) HELP Q: Why the timer doesn't work in the background? A: You should allow notifications. Q: How to turn off the sound and turn on the vibration? A: On the device, turn the Silent Mode on. (Side Switch) Q: How can I add a custom sound? A: There are four ways. Choose one depending where is the sound file located. * If the sound on your Mac or PC: 1. Connect the device. 2. Open Finder and select the device. 3. Select Files in the menu. There you'll find 'Periodic +' folder. 4. Drug and drop the sound file there. * From Files app on iPhone: 1. Copy the required file. 2. Open Periodic + folder and paste it. * From another app on iPhone (like Mail): 1. Open the app where the file is located. 2. Find and touch Share button (it may have different name, for example Export). 3. In the appearing Share Sheet find the list of apps. If there is no Periodic +, touch More and enable it. 4. Now select Periodic + in the Share dialog and the sound will be imported. * And the most convenient "+" button! 1. Open Sounds tab. 2. Hit the "+" button in the "Folder" section and pick your file. Q: Alert is limited for 5 seconds! A: Go to Settings app, then Periodic + > Notifications > Banner Style > Persistent. Q: How to switch the Timer Output Mode? A: To switch the Output Mode touch the timer display at the top of the screen. Q: What is Shake To Start for? A: Shake To Start setting allows to start/cancel the timer by shaking the device. Thus, you don't touch the screen, what can be useful while cooking, for example. For this mode, in order to work, the app should be open. This app has a free version with limited features. If you still have questions or suggestions, you can visit the support page (https://goo.gl/forms/pggVBcaBxdW85EGE3), the Facebook group (http://www.facebook.com/groups/PeriodicTimer/) or you can email me (periodictimer.sup@gmail.com). If you like the app - please, rate it!

About

lead ECG

Features
Read full description

1. Health indicator management - seamlessly integrated with intelligent health monitoring devices, this application can accurately collect key health data including electrocardiograms (ECG). 2. Data Viewing - Easily view all your health data anytime, anywhere — without time or location constraints. Stay informed about your personal health status in real time, giving you greater awareness and control over your well-being. [Disclaimer] 1. lead ECG is not a medical service provider. lead ECG only provides information services based on the data you upload. The content provided should not be considered medical advice or a substitute for a doctor’s diagnosis. You should not rely solely on the services provided by lead ECG for disease diagnosis or treatment. For any medical advice, diagnosis, treatment, or similar needs, please consult a qualified physician. 2. When using the information provided by the App, users should consult a doctor before making any health-related decisions. If you rely on inaccurate information and subsequently make an incorrect judgment about your own health condition, you assume full responsibility for any consequences. The App shall not be held liable for any discrepancies or outcomes arising from your independent use of the data.  【Declaration of Jurisdiction】 We control and operate this APP within the territory of the People's Republic of China ("China"), and we have not made any statements regarding the applicability or suitability of any materials on this APP in any other place. If you choose to access this app from elsewhere, you are responsible for complying with applicable local laws. Medical hardware products have regulatory licenses in China。If you use it elsewhere, you must comply with relevant laws and regulations

Screenshots

Periodic Timer +4 screens
lead ECG4 screens

Verdict

The call

The clearest difference is price: lead ECG at Free against Periodic Timer +'s $4.99. lead ECG also leads on in-app purchases (none vs 3) and update cadence (every 3 weeks vs every 4 months). Periodic Timer +'s advantage is chart position (#101 vs unranked). On ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

Periodic Timer + ships an update every 4 months, lead ECG every 3 weeks. The most recent releases landed on October 16, 2026 and October 13, 2026 respectively.

Scorecard5 real differences · 6 level
Periodic Timer + versus lead ECG: the parameters behind the verdict, then further details
ParameterPeriodic Timer +lead ECG
Price$4.99Free — better
Rating3.9 (74 ratings) — better—
Positive reviews53.6% of reviews—
Number of ratings74 — better—
Update frequencyEvery 4 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree—
Best chart rank#101 — better—
DevicesiPhone, iPad, Apple Watch — betteriPhone, iPod
Requires iOS17.015.0 — better
Further details — not scored
Size12 MB47 MB
Age rating4+17+
DeveloperVladimir Kelin徐州永康电子科技有限公司

Bugs and requests

Periodic Timer +

Reported bugs

14 issues
  • 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
Show 9 more
  • Timer restarts automatically
  • External speaker volume lower
  • Battery drain on Apple Watch
  • Timer stops going off after a certain number of reps
  • App crashes
  • Sound uses sound effect volume on iPad
  • Heart rate sensor stays on when running in background
  • Timer restarts automatically
  • Volume barely audible

Requested features

23 requests
  • 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
Show 18 more
  • Customizable notification text
  • Apple Watch complication
  • Widget support
  • Longer vibration duration
  • Lap count and current lap time display
  • Ability to set custom alert audio
  • Option to set alarm for a specific time of day
  • Ability to set multiple timers simultaneously
  • Ability to specify number of loop cycles
  • Option to use custom MP3 files for alerts
  • Control vibration duration
  • Synchronize with iOS clock
  • More diverse vibration modes
  • Ability to add custom notification sounds
  • Turn off Apple Watch function
  • Fix iPad sound volume control
  • Add more timers
  • Make timer not restart automatically

lead ECG

Not enough reviews yet to summarise bugs or requests.

In-app purchases

3 purchases

Periodic Timer +

One-time3
  • Tip a Banana$0.99
  • Tip a Coffee$3.99
  • Donate: Bust the project!$9.99
None

lead ECG

No in-app purchases

Questions

Is Periodic Timer + free?
Periodic Timer + 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 + or lead ECG have ads?
Neither Periodic Timer + nor lead ECG shows ads.
Which is updated more often, Periodic Timer + or lead ECG?
Periodic Timer + ships an update every 4 months, and lead ECG every 3 weeks. Most recently, Periodic Timer + was updated on October 16, 2026 and lead ECG on October 13, 2026.

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