# Interval Timer vs LIBRO

The clearest difference is review sentiment: Interval Timer at 73% against LIBRO's 4%. Interval Timer also leads on rating (4.5 vs 2.5) and update cadence (every 9 days vs every 7 months). LIBRO's advantage is in-app purchases (none vs 8) and ads (none vs shown). On price and iOS requirement there is nothing between them.

Both are free to download. Interval Timer sells 6 in-app purchases, starting at $0.99 per month. LIBRO asks for nothing beyond the download.

Interval Timer holds the better App Store score, 4.5 against 2.5. That said, the two scores are not equally well evidenced: Interval Timer has 19K ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 73% of Interval Timer's written reviews are positive against 4% of LIBRO's.

Interval Timer ships an update every 9 days, LIBRO every 7 months. The most recent releases landed on October 14, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Interval Timer | LIBRO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (19K ratings)](https://appshunter.io/ios/app/interval-timer-tabata-timer/id406473568/reviews)** | [2.5 (2 ratings)](https://appshunter.io/ios/app/libro/id1322524427/reviews) |
| Number of ratings | **19K** | 2 |
| Positive reviews | **72.9% of reviews** | 4.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 9 days** | Every 7 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 143 MB | 10 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [NEO PIXEL LABS PTE. LTD.](https://appshunter.io/developer/1788472183) | [Nutritics Limited](https://appshunter.io/developer/1322524426) |

## What reviewers say

### Interval Timer

[App page](https://appshunter.io/ios/app/interval-timer-tabata-timer/id406473568)

This app helps you manage workout intervals with customizable work and rest periods. It runs in the background and allows music playback, with options to save settings and share progress. Integrates with Apple Health for heart rate monitoring.

**Highlights:** Customizable sets, intervals, and rest times, Runs in background and with screen locked, Music playlist integration, Save settings as templates, Apple Health integration for heart rate, Post workouts to social media

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plus - 1 Month | $0.99 | per month |
| Premium - 1 Month | $1.99 | per month |
| Plus - 1 Month | $1.99 | per month |
| Premium - 1 Month | $2.99 | per month |
| Plus - 1 Year | $4.99 | per year |
| Premium - 1 Year | $9.99 | per year |

**What reviewers like**

- 🚀 Free version works well
- 👍 Customizable intervals and timers
- 👍 Flexible for different workouts
- 👍 Easy to use and set up
- 👍 Provides visual and audio cues

**What reviewers complain about**

- 🐛 Timer issues (stops, loses time)
- 🔋 Drains battery when used
- 💰 Expensive subscription model
- 📢 Intrusive ads
- 🔒 Incompatible with other apps

**Reported bugs**

- Ads block functionality
- App freezes or crashes
- Timer doesn't work in background

**Requested features**

- Add notes to workouts
- Provide workout history and analytics
- Allow syncing with Apple Health
- Improve Apple Watch integration
- Add more customization options


### 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 free?

Interval 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 or LIBRO?

Interval Timer is rated higher. Interval Timer averages 4.5 out of 5 from 19K ratings, while LIBRO averages 2.5 from 2 ratings.

### Do Interval Timer or LIBRO have ads?

Interval Timer shows ads; LIBRO does not.

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

Interval Timer ships an update every 9 days, and LIBRO every 7 months. Most recently, Interval Timer was updated on October 14, 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.*