# Periodic Timer vs Dosr

The clearest difference is price: Periodic Timer at Free against Dosr's $0.99. Periodic Timer also leads on ratings volume (167 vs 1). Dosr's advantage is rating (5.0 vs 4.1) and update cadence (daily vs every 2 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Periodic Timer is free to download; Dosr costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Dosr holds the better App Store score, 5.0 against 4.1. That said, the two scores are not equally well evidenced: Periodic Timer has 167 ratings behind it against 1, so its average is the more settled of the two.

Periodic Timer ships an update every 2 months, Dosr daily. The most recent releases landed on October 11, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Periodic Timer | Dosr |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | [4.1 (167 ratings)](https://appshunter.io/ios/app/periodic-timer/id933241656/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/dosr/id6737800067/reviews)** |
| Number of ratings | **167** | 1 |
| Positive reviews | 52.1% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Daily** |
| Monetization | **Free** | Paid |
| Size | 23 MB | 5 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Vladimir Kelin](https://appshunter.io/developer/933241655) | [Grant Tyler Eizikowitz](https://appshunter.io/developer/1777995517) |

## What reviewers say

### Periodic Timer

[App page](https://appshunter.io/ios/app/periodic-timer/id933241656)

This app provides a simple, repeating interval timer that can run in the background without distracting you. It offers customizable alerts, quick start options, and prevents your screen from locking while active. Ideal for various activities like fitness, cooking, and learning.

**Highlights:** Repeating interval timer, Background operation, Customizable alerts (vibration/sound), Prevent lockscreen, Shake to start, Multiple timer output modes

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

**In-app purchases:** none

**What reviewers like**

- 👍 Simple and intuitive interface
- ⏱️ Effective repeating/interval timer functionality
- 🎯 Does exactly what it's designed to do
- 🔇 Vibration-only option available
- 📱 Works in background with screen off

**What reviewers complain about**

- 🔊 Sound/notification issues (unreliable or missing)
- 💰 Aggressive premium upselling in free version
- 🐛 Timer cancels when phone is shaken
- 🔋 Activates heart rate sensor, drains battery
- 📵 Doesn't work reliably with screen locked

**Reported bugs**

- Sound/notifications fail to trigger despite settings enabled
- Timer cancels when phone is shaken or moved
- Vibration doesn't work when screen is locked or off
- App crashes on launch (especially after updates)
- Watch app crashes or doesn't function

**Requested features**

- Adjustable sound volume and custom alert sounds
- Customizable vibration patterns
- Settings menu for user preferences
- Ability to add notes/labels to timers
- Seconds-only timer option


### Dosr

[App page](https://appshunter.io/ios/app/dosr/id6737800067)

This utility app helps you meticulously track both time and important numerical values. It's designed for tasks requiring precision, from scientific measurements to detailed project planning.

**Highlights:** Time tracking, Value tracking, Precise measurements, Creative project support, Seamless integration

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Periodic Timer free?

Periodic Timer is free to download, with no in-app purchases.

### Is Dosr free?

Dosr costs $0.99, with no in-app purchases.

### Which has better reviews, Periodic Timer or Dosr?

Dosr is rated higher. Periodic Timer averages 4.1 out of 5 from 167 ratings, while Dosr averages 5.0 from 1 ratings.

### Do Periodic Timer or Dosr have ads?

Neither Periodic Timer nor Dosr shows ads.

### Which is updated more often, Periodic Timer or Dosr?

Periodic Timer ships an update every 2 months, and Dosr daily. Most recently, Periodic Timer was updated on October 11, 2026 and Dosr on September 17, 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.*