# MrSlim vs Interval Timer

The clearest difference is rating: Interval Timer at 4.5 against MrSlim's 4.0. Interval Timer also leads on ads (none vs shown). MrSlim's advantage is update cadence (every 5 days vs every 6 weeks) and iOS requirement (13.0 vs 16.0). On price, review sentiment, ratings volume and in-app purchases there is nothing between them.

Both are free to download. MrSlim sells 3 in-app purchases, starting at $9.99 per month and Interval Timer sells 4 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Interval Timer holds the better App Store score, 4.5 against 4.0. Both are backed by a comparable volume of ratings — 16 and 39 respectively. Written reviews point the same way: 80% of MrSlim's written reviews are positive against 85% of Interval Timer's.

MrSlim ships an update every 5 days, Interval Timer every 6 weeks. The most recent releases landed on October 9, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | MrSlim | Interval Timer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (16 ratings)](https://appshunter.io/ios/app/mrslim-calorie-counter/id1629244091/reviews) | **[4.5 (39 ratings)](https://appshunter.io/ios/app/interval-timer-workout-timer/id6740899335/reviews)** |
| Number of ratings | 16 | **39** |
| Positive reviews | 80.0% of reviews | **85.2% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 5 days** | Every 6 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 436 MB | 9 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Nikita Dolya](https://appshunter.io/developer/1567966385) | [Vipul Prajapati](https://appshunter.io/developer/1737800971) |

## What reviewers say

### MrSlim

[App page](https://appshunter.io/ios/app/mrslim-calorie-counter/id1629244091)

This app helps you achieve your ideal weight and a healthier lifestyle by managing your diet, tracking physical activity, and offering healthy recipes. It includes features for calorie tracking, exercise logging, and intermittent fasting.

**Highlights:** Calorie tracking, Activity and workout logging, Intermittent fasting tracker, Healthy recipes and ideas, Yoga for weight loss, Daily and weekly statistics

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MrSlim PRO Month | $9.99 | per month |
| MrSlim PRO Year | $59.99 | per year |
| MrSlim PRO Trial | $59.99 | per year |


### Interval Timer

[App page](https://appshunter.io/ios/app/interval-timer-workout-timer/id6740899335)

This app provides a versatile interval timer for various fitness activities, including Tabata, HIIT, and running. Customize work and rest periods, set multiple rounds, and utilize voice prompts for seamless training. It functions as a stopwatch and countdown timer for diverse workout needs.

**Highlights:** Customizable interval timer, Tabata and HIIT workout support, Running and cardio intervals, Stopwatch and countdown timer, Voice prompts and loud alerts, Background mode, Screen stays awake

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Interval Timer For Workouts | $3.99 | per 7 days |
| Workouts Timer, Interval Timer | $9.99 | per month |
| Interval Timer, Tabata, HIIT | $19.99 | per year |
| Workouts Tabata Interval Timer Pro | $19.99 | one-time |


## Frequently asked questions

### Is MrSlim free?

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

### Is Interval Timer free?

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

### Which has better reviews, MrSlim or Interval Timer?

Interval Timer is rated higher. MrSlim averages 4.0 out of 5 from 16 ratings, while Interval Timer averages 4.5 from 39 ratings.

### Do MrSlim or Interval Timer have ads?

MrSlim shows ads; Interval Timer does not.

### Which is updated more often, MrSlim or Interval Timer?

MrSlim ships an update every 5 days, and Interval Timer every 6 weeks. Most recently, MrSlim was updated on October 9, 2026 and Interval Timer on October 15, 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.*