# Precision Interval Timer vs Rollbook

The clearest difference is in-app purchases: Precision Interval Timer at none against Rollbook's 3. Precision Interval Timer also leads on iOS requirement (9.0 vs 15.0). Rollbook's advantage is update cadence (every 10 days vs every 4 months). On price, ads and device support there is nothing between them.

Both are free to download. Rollbook sells 3 in-app purchases, starting at $1.99 per month. Precision Interval Timer asks for nothing beyond the download.

Precision Interval Timer ships an update every 4 months, Rollbook every 10 days. The most recent releases landed on October 24, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Precision Interval Timer | Rollbook |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/precision-interval-timer/id1211281892/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 10 days** |
| Monetization | Free | — |
| Size | 2 MB | 131 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jason Van Veldhuysen](https://appshunter.io/developer/596889920) | [Philipp Butzmann](https://appshunter.io/developer/1835282783) |

## What reviewers say

### Precision Interval Timer

[App page](https://appshunter.io/ios/app/precision-interval-timer/id1211281892)

Create custom workout routines with pre-programmed warm-ups, intervals, conditioning, and cool-downs. Set work and rest periods, repeat cycles, and let the timer guide your training session.

**Highlights:** Pre-program entire workouts, Customizable work and rest intervals, Repeat cycles for exercises, Warm-up, conditioning, and cool-down sections, Guided training sessions, Stackable interval sections

**Features:** Vision Pro support

**In-app purchases:** none


### Rollbook

[App page](https://appshunter.io/ios/app/rollbook-bjj-and-nogi-training/id6757962404)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RollBook Monthly | $1.99 | per month |
| Rollbook Supporter | $14.99 | per year |
| Rollbook Supporter Lifetime | $49.99 | one-time |


## Frequently asked questions

### Is Precision Interval Timer free?

Precision Interval Timer is free to download, with no in-app purchases.

### Is Rollbook free?

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

### Do Precision Interval Timer or Rollbook have ads?

Neither Precision Interval Timer nor Rollbook shows ads.

### Which is updated more often, Precision Interval Timer or Rollbook?

Precision Interval Timer ships an update every 4 months, and Rollbook every 10 days. Most recently, Precision Interval Timer was updated on October 24, 2026 and Rollbook on October 31, 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.*