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48
BU Score
Emerging

Periodic Timer +

3.9 ✍️ Editor
✍️ BU Analytics Review

Periodic Timer + is an iOS app from Vladimir Kelin in the Health & Fitness category, currently rated 3.9★ across 71 ratings. Initial signal reads as largely positive sentiment, users highlighting consistency and feature depth.

Our BU Score puts it at 48Emerging (early traction worth watching). For a Health & Fitness app, that means early traction worth watching.

Track changes month-over-month in the Performance section below — live snapshot history and revenue forecast included.

creator

📊 Performance Tracking LIVE

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Rating
Reviews
Forecast Revenue / mo
Snapshots tracked
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💰 Forecast Revenue / mo

MODEL
Revenue forecast computed from BU's 234 trigger model on each snapshot. Calibrated against ground-truth from 58 verified-revenue apps.
🔬Forecast Breakdown — Why This Estimate?Top 4 of 4 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
Paid app ($0.00)METRIC
+$2,800
Mature app (9y old)METRIC
+$1,500
Multilingual (22 languages)METRIC
+$1,500
Pre-traction phase (71 ratings)METRIC
−$300
METRIC = structural app data · REVIEW = mined from user reviews · ✓ VERIFIED = Stripe-verified anchor (TrustMRR)

📈 Reviews Growth

LIVE
Cumulative review count from first BU snapshot. Each point = a tracked update.
💚Sentiment Over Time↑ green = positive · ↓ red = negative
May 24
Sep 24
May 25
Jul 25
Aug 25
Dec 25
Feb 26

⭐ Rating Trend

LIVE
Average rating evolution. Updates with each new review batch.

🗓️ Snapshot Timeline

HISTORY
Each bar shows a tracked update and the metric delta from the previous snapshot.
App Specs
🔐 Own this app? Claim & verify MRR →
💾 9 MB🔞 4+📱 iOS 16.0+🔖 v4.5🔄 updated 7mo ago🌐 BE, DA, NL, EN, FR +17📂 Health & Fitness💰 Paid🚀 Launched 2017 (9y old)

📝 About this app

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!

🆕 What's New · v4.5

- Optimised for iOS 26.
- Launch Screen improved.
- Minor fixes.

Profile & Insights

Everything we know — and don't — about this app and its company.

Identification

App name
Periodic Timer +
Developer
Vladimir Kelin
Bundle ID
kelin.vladimir.periodictimerplus
App Store URL
Open in App Store
Category
Health & Fitness
Content rating
4+
Languages
BE, DA, NL, EN, FR, DE, ID, IT, JA, KO, NB, PL, PT, RU, ZH, ES, SV, TH, ZH, TR, UK, VI

Company

Website
Not found
Tagline
Not found
Description
Not found
Founded
Not found
HQ / Address
Not found
Employees
Not found
Logo
Not found

Revenue

Verified revenue / mo
Not found
AI revenue estimate / mo
Not found
AI annual estimate
Not found
ML model estimate / mo
$459/mo
Top-grossing rank
Outside top 100 in US Health & Fitness
All-time revenue
Not found
Pricing
Not found

Founder

Name
Not found
X / Twitter
Not found
LinkedIn
Not found
GitHub
Not found
X followers
Not found
Public statements
Not found

Funding

Total raised
Not found
Last round
Not found
Investors
Not found
Crunchbase
Not found
AngelList
Not found

Press & Links

Articles found
Not found
Listed on
Not found
Blog
Not found
Press / News
Not found

Contacts & Socials

Socials
facebook
Email
Not found
Phone
Not found
Contact page
https://www.facebook.com/help/568137493302217
About page
https://www.facebook.com/about/
📈Ratings growth71 ratings+7000% lifetimeShow 3-year history estimate ▾May 2017May 2024May 2026
Tracked (33 weeks) Pre-tracking estimate (36 weeks) · model-based, ±5% noise · anchored to release date and current value
🌍Geographic ReachNot ranked
This app is currently outside the top 100 grossing in all 9 countries we monitor (US, UK, DE, FR, JP, CA, AU, BR, IN). Niche or new apps often launch this way — popularity rankings appear once daily revenue clears the regional threshold.
💰Pricing History$0.00 → $4.99 (+0%)
Profile is built from iTunes Lookup + developer site scrape + ML revenue model. Empty fields show "Not found" — additional sources (Crunchbase, X, IndieHackers, Acquire.com) coming.
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