# Workout Interval Timer App vs sol

The clearest difference is rating: sol at 5.0 against Workout Interval Timer App's 1.0. sol also leads on monetization model (freemium vs subscription) and ads (none vs shown). Workout Interval Timer App's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 18.0). On price and in-app purchases there is nothing between them.

Both are free to download. Workout Interval Timer App sells 4 in-app purchases, starting at $2.99 per month and sol sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

sol holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 3 respectively.

Workout Interval Timer App ships an update fortnightly, sol every 2 days. The most recent releases landed on September 18, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Workout Interval Timer App | sol |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/workout-interval-timer-app/id1620527260/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/sol-dreams/id6760870952/reviews)** |
| Number of ratings | 1 | **3** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Fortnightly | **Every 2 days** |
| Monetization | Subscription | **Freemium** |
| Size | 10 MB | 14 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Patel Darshan](https://appshunter.io/developer/1487427494) | [Zachary Hogan](https://appshunter.io/developer/1886553260) |

## What reviewers say

### Workout Interval Timer App

[App page](https://appshunter.io/ios/app/workout-interval-timer-app/id1620527260)

This app helps you create and manage personalized workout routines with customizable intervals, sets, and rest periods. It offers sound and vibration alerts to keep you on track during various training styles like HIIT and Tabata.

**Highlights:** Customizable intervals, Unlimited rounds and rest, Sound and vibration alerts, Create workout presets, Preview and adjust settings, Versatile for HIIT, Tabata, yoga

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Pro | $2.99 | per month |
| Monthly pro | $2.99 | per month |
| Yearly Pro | $19.99 | per year |
| Yearly pro | $19.99 | per year |


### sol

[App page](https://appshunter.io/ios/app/sol-dreams/id6760870952)

This app uses AI to map your emotions to solfeggio frequencies and pair them with personalized sleep playlists. Track your emotional history and receive tailored frequency readings that evolve over time. Enjoy curated Spotify playlists designed to enhance your sleep experience.

**Highlights:** Emotional word check-ins, AI-powered frequency readings, Curated Spotify sleep playlists, Progressive reading history, Premium daily check-ins, Partner mode

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $3.99 | per month |
| Yearly Premium | $29.99 | per year |


## Frequently asked questions

### Is Workout Interval Timer App free?

Workout Interval Timer App is free to download, with in-app purchases available.

### Is sol free?

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

### Which has better reviews, Workout Interval Timer App or sol?

sol is rated higher. Workout Interval Timer App averages 1.0 out of 5 from 1 ratings, while sol averages 5.0 from 3 ratings.

### Do Workout Interval Timer App or sol have ads?

Workout Interval Timer App shows ads; sol does not.

### Which is updated more often, Workout Interval Timer App or sol?

Workout Interval Timer App ships an update fortnightly, and sol every 2 days. Most recently, Workout Interval Timer App was updated on September 18, 2026 and sol on September 30, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*