# Strengthiness Interval Timer vs Sync Stairs

The clearest difference is price: Sync Stairs at Free against Strengthiness Interval Timer's $0.99. Strengthiness Interval Timer's advantage is in-app purchases (none vs 2) and chart position (#174 vs unranked). On ads and device support there is nothing between them.

Sync Stairs is free to download; Strengthiness Interval Timer costs $0.99 up front. Sync Stairs sells 2 in-app purchases, starting at $4.99 per 7 days. Strengthiness Interval Timer asks for nothing beyond the download.

## The numbers

| Metric | Strengthiness Interval Timer | Sync Stairs |
| --- | --- | --- |
| 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 | — |
| Monetization | Paid | — |
| Best chart rank | **#174** | — |
| Size | 1 MB | 37 MB |
| Requires iOS | **13** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Strengthiness, LLC](https://appshunter.io/developer/579445324) | [Richard Witherspoon](https://appshunter.io/developer/1690898003) |

## What reviewers say

### Strengthiness Interval Timer

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

**Currently charting:** #174 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


### Sync Stairs

[App page](https://appshunter.io/ios/app/sync-stairs/id6807886795)

**Features:** Family Sharing, Apple Watch app

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Subscription | $4.99 | per 7 days |
| Annual Subscription | $29.99 | per year |


## Frequently asked questions

### Is Strengthiness Interval Timer free?

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

### Is Sync Stairs free?

Sync Stairs is free to download, with in-app purchases available.

### Do Strengthiness Interval Timer or Sync Stairs have ads?

Neither Strengthiness Interval Timer nor Sync Stairs shows ads.

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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.*