# Interval Timer □ HIIT Timer vs LIBRO

The clearest difference is review sentiment: Interval Timer □ HIIT Timer at 61% against LIBRO's 4%. Interval Timer □ HIIT Timer also leads on rating (4.8 vs 2.5) and update cadence (every 5 weeks vs every 7 months). LIBRO's advantage is in-app purchases (none vs 5). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Interval Timer □ HIIT Timer sells 5 in-app purchases, starting at $1.99 per month. LIBRO asks for nothing beyond the download.

Interval Timer □ HIIT Timer holds the better App Store score, 4.8 against 2.5. That said, the two scores are not equally well evidenced: Interval Timer □ HIIT Timer has 86K ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 61% of Interval Timer □ HIIT Timer's written reviews are positive against 4% of LIBRO's.

Interval Timer □ HIIT Timer ships an update every 5 weeks, LIBRO every 7 months. The most recent releases landed on October 15, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Interval Timer □ HIIT Timer | LIBRO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (86K ratings)](https://appshunter.io/ios/app/interval-timer-hiit-timer/id1124297113/reviews)** | [2.5 (2 ratings)](https://appshunter.io/ios/app/libro/id1322524427/reviews) |
| Number of ratings | **86K** | 2 |
| Positive reviews | **60.7% of reviews** | 4.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 7 months |
| Monetization | Freemium | **Free** |
| Size | 34 MB | 10 MB |
| Requires iOS | 15.6 | **14.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Float Tech, LLC](https://appshunter.io/developer/483697886) | [Nutritics Limited](https://appshunter.io/developer/1322524426) |

## What reviewers say

### Interval Timer □ HIIT Timer

[App page](https://appshunter.io/ios/app/interval-timer-hiit-timer/id1124297113)

Create custom workout timers with adjustable intervals for exercise and rest.  Track your progress with detailed history and statistics, and repeat past workouts easily.  Enjoy audio cues without interrupting your music.

**Highlights:** Customizable intervals, Workout and rest timers, Voice or beep guides, Background audio support, Workout history and statistics, Repeat previous workouts

**Features:** Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Pass | $1.99 | per month |
| Premium Pass | $2.99 | per month |
| Lifetime Pass | $14.99 | one-time |
| Lifetime Pass | $19.99 | one-time |
| Premium Forever Promo | $29.99 | one-time |

**What reviewers like**

- 🚀 Simple and easy to use
- 👍 Customizable settings
- 🚀 Intuitive interface
- 🚀 Effective for HIIT workouts
- 👍 Helpful voice prompts

**What reviewers complain about**

- 🔒 Requires subscription after limited free use
- 🐛 Music volume issues with voice prompts
- 🐛 Inconsistent behavior when switching apps
- 🐛 Lack of final workout notification

**Reported bugs**

- Timer not always accurate
- Favorites/saved workouts feature not working
- Inconsistent behavior when pausing/resuming

**Requested features**

- Ability to save and name custom workouts
- More flexibility in exercise/rest time settings
- Option to adjust volume of voice prompts


### LIBRO

[App page](https://appshunter.io/ios/app/libro/id1322524427)

This AI-powered health assistant helps you track diet, exercise, and lifestyle goals with features like voice logging and a barcode scanner. It offers personalized suggestions and meal planning tools. Access is currently by invitation only from an accredited nutrition professional.

**Highlights:** AI-powered health tracking, Voice logging, Barcode scanner, Personalized suggestions, Diet and activity logging, Meal planning

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Interval Timer □ HIIT Timer free?

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

### Is LIBRO free?

LIBRO is free to download, with no in-app purchases.

### Which has better reviews, Interval Timer □ HIIT Timer or LIBRO?

Interval Timer □ HIIT Timer is rated higher. Interval Timer □ HIIT Timer averages 4.8 out of 5 from 86K ratings, while LIBRO averages 2.5 from 2 ratings.

### Do Interval Timer □ HIIT Timer or LIBRO have ads?

Neither Interval Timer □ HIIT Timer nor LIBRO shows ads.

### Which is updated more often, Interval Timer □ HIIT Timer or LIBRO?

Interval Timer □ HIIT Timer ships an update every 5 weeks, and LIBRO every 7 months. Most recently, Interval Timer □ HIIT Timer was updated on October 15, 2026 and LIBRO on October 11, 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.*