# Strengthiness Interval Timer vs Health Kitty

The clearest difference is price: Health Kitty at Free against Strengthiness Interval Timer's $0.99. Health Kitty also leads on update cadence (every 2 weeks vs every 5 months). Strengthiness Interval Timer's advantage is in-app purchases (none vs 2) and chart position (#170 vs unranked). On ads and device support there is nothing between them.

Health Kitty is free to download; Strengthiness Interval Timer costs $0.99 up front. Health Kitty sells 2 in-app purchases, starting at $5.99 per month. Strengthiness Interval Timer asks for nothing beyond the download.

Strengthiness Interval Timer ships an update every 5 months, Health Kitty every 2 weeks. The most recent releases landed on October 23, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Strengthiness Interval Timer | Health Kitty |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/strengthiness-interval-timer/id707524017/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 weeks** |
| Monetization | Paid | — |
| Best chart rank | **#170** | — |
| Size | 1 MB | 20 MB |
| Requires iOS | **13** | 26.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Vision Pro |
| Age rating | 4+ | 4+ |
| Developer | [Strengthiness, LLC](https://appshunter.io/developer/579445324) | [Delightful Apps PTY LTD](https://appshunter.io/developer/407160000) |

## What reviewers say

### Strengthiness Interval Timer

[App page](https://appshunter.io/ios/app/strengthiness-interval-timer/id707524017)

**Currently charting:** #170 Top Paid · Health & Fitness (US App Store)

This interval timer offers a straightforward and efficient way to manage your workouts. It supports multiple named sets, unlimited intervals, and provides audio and vibration cues. Ideal for various interval training protocols, it simplifies setup and tracking.

**Highlights:** Super easy setup, Multiple named sets, Unlimited intervals, Countdown and count-up timers, Beep and vibration alerts, Stopwatch with lap counter, Set counter

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

**In-app purchases:** none


### Health Kitty

[App page](https://appshunter.io/ios/app/health-kitty/id6748125016)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Health Kitty+ Monthly | $5.99 | per month |
| Health Kitty+ Annual | $59.99 | per year |


## Frequently asked questions

### Is Strengthiness Interval Timer free?

Strengthiness Interval Timer costs $0.99, with no in-app purchases.

### Is Health Kitty free?

Health Kitty is free to download, with in-app purchases available.

### Do Strengthiness Interval Timer or Health Kitty have ads?

Neither Strengthiness Interval Timer nor Health Kitty shows ads.

### Which is updated more often, Strengthiness Interval Timer or Health Kitty?

Strengthiness Interval Timer ships an update every 5 months, and Health Kitty every 2 weeks. Most recently, Strengthiness Interval Timer was updated on October 23, 2026 and Health Kitty on October 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.*