# HRV4Training vs Periodic Timer +

The clearest difference is in-app purchases: HRV4Training at none against Periodic Timer +'s 3. HRV4Training also leads on update cadence (every 6 weeks vs every 4 months) and chart position (#15 vs unranked). Periodic Timer +'s advantage is price ($4.99 vs $9.99) and rating (3.9 vs 3.6). On review sentiment, ads and device support there is nothing between them.

HRV4Training costs $9.99 and Periodic Timer + $4.99 up front. Periodic Timer + sells 3 one-off in-app purchases. HRV4Training asks for nothing beyond the download.

Periodic Timer + holds the better App Store score, 3.9 against 3.6. Both are backed by a comparable volume of ratings — 288 and 74 respectively. Written reviews complicate that: 61% of HRV4Training's written reviews are positive against 54% of Periodic Timer +'s, so the app with the better star average is not the one people write more warmly about.

HRV4Training ships an update every 6 weeks, Periodic Timer + every 4 months. The most recent releases landed on September 27, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | HRV4Training | Periodic Timer + |
| --- | --- | --- |
| Price | $9.99 | **$4.99** |
| Rating | [3.6 (288 ratings)](https://appshunter.io/ios/app/hrv4training/id686923970/reviews) | **[3.9 (74 ratings)](https://appshunter.io/ios/app/periodic-timer-plus/id1175807581/reviews)** |
| Number of ratings | **288** | 74 |
| Positive reviews | **61.1% of reviews** | 53.6% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 4 months |
| Monetization | Paid | **Free** |
| Best chart rank | **#15** | — |
| Size | 35 MB | 12 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [A.S.M.A. B.V.](https://appshunter.io/developer/1066843463) | [Vladimir Kelin](https://appshunter.io/developer/933241655) |

## What reviewers say

### HRV4Training

[App page](https://appshunter.io/ios/app/hrv4training/id686923970)

**Currently charting:** #15 Top Paid · Health & Fitness (US App Store)

Quantify stress, balance training and lifestyle, and improve performance with scientifically validated heart rate variability insights. This app accurately assesses HRV using your phone's camera or compatible devices, offering actionable interpretations for optimizing your training plan.

**Highlights:** HRV-based stress quantification, Training and lifestyle balance, Performance improvement insights, Camera-based HRV assessment, Integration with wearables, Training load analysis, VO2max and Lactate Threshold estimation

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Accurate HRV measurements
- 🚀 Straightforward and easy to use
- 💡 Provides valuable insights for training and recovery
- 👍 Integrates well with other fitness apps
- 👍 Responsive and helpful developer support

**What reviewers complain about**

- 🐛 Inconsistent readings and technical issues
- 🔒 Requires user account and data sharing
- 🔒 Concerns about data privacy
- 🔋 Drains battery when using camera for measurements

**Reported bugs**

- App crashes frequently, especially with iOS updates
- Syncing issues with Strava, TrainingPeaks, and Apple Health
- Camera-based measurements often unreliable or inconsistent

**Requested features**

- Allow multiple measurements per day
- Improve integration with Apple Watch and other wearables
- Add more customization options and data visualization
- Expand support for non-athletic use cases


### Periodic Timer +

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


## Frequently asked questions

### Is HRV4Training free?

HRV4Training costs $9.99, with no in-app purchases.

### Is Periodic Timer + free?

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

### Which has better reviews, HRV4Training or Periodic Timer +?

Periodic Timer + is rated higher. HRV4Training averages 3.6 out of 5 from 288 ratings, while Periodic Timer + averages 3.9 from 74 ratings.

### Do HRV4Training or Periodic Timer + have ads?

Neither HRV4Training nor Periodic Timer + shows ads.

### Which is updated more often, HRV4Training or Periodic Timer +?

HRV4Training ships an update every 6 weeks, and Periodic Timer + every 4 months. Most recently, HRV4Training was updated on September 27, 2026 and Periodic Timer + on September 24, 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.*