# 1Timer vs CheckOut Master

The clearest difference is price: 1Timer at Free against CheckOut Master's $1.00. 1Timer also leads on ratings volume (1.2K vs 1) and iOS requirement (15.0 vs 18.0). CheckOut Master's advantage is in-app purchases (none vs 5) and ads (none vs shown). On device support there is nothing between them.

1Timer is free to download; CheckOut Master costs $1.00 up front. 1Timer sells 5 in-app purchases, starting at $0.99 per 7 days. CheckOut Master asks for nothing beyond the download.

CheckOut Master holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: 1Timer has 1.2K ratings behind it against 1, so its average is the more settled of the two.

1Timer ships an update every 6 weeks, CheckOut Master every 2 days. The most recent releases landed on October 15, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | 1Timer | CheckOut Master |
| --- | --- | --- |
| Price | **Free** | $1.00 |
| Rating | [4.7 (1.2K ratings)](https://appshunter.io/ios/app/1timer-voice-timer/id1357874791/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/checkout-master/id6748267777/reviews)** |
| Number of ratings | **1.2K** | 1 |
| Positive reviews | 81.2% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 6 weeks | **Every 2 days** |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 18 MB | 1 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Diffuse Thinking LLC](https://appshunter.io/developer/1692715488) | [Michael Rosenblatt](https://appshunter.io/developer/1716144701) |

## What reviewers say

### 1Timer

[App page](https://appshunter.io/ios/app/1timer-voice-timer/id1357874791)

This app provides highly customizable voice timers for various activities like workouts, habits, and routines. Set per-second countdowns, interval reminders, and choose from multiple languages and voices for announcements. It offers quick access via widgets and works offline with VoiceOver support.

**Highlights:** Voice countdown announcements, Customizable reminder intervals, Multiple language and voice options, Chaining timers together, Widget for quick access, Works with locked screen, VoiceOver support

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Weekly | $0.99 | per 7 days |
| Pro Monthly | $2.99 | per month |
| Pro Annual | $9.99 | per year |
| Pro Lifetime | $19.99 | one-time |
| Pro Lifetime | $39.99 | one-time |

**What reviewers like**

- 🚀 Customizable voice timers
- 👍 Helpful for productivity and focus
- 🔒 No ads or in-app purchases
- 🔒 Lifetime license option
- 👍 Intuitive and easy to use

**What reviewers complain about**

- 🐛 Unstable voice prompts
- 🐛 Ads on premium version
- 🔋 High battery consumption
- 🔒 Lifetime license not transferable to new devices
- 👎 Unintuitive UI in some areas

**Reported bugs**

- Ads closing the app
- Voice prompts not working after switching to background
- Timer number disappearing when closing app from background
- White noise/static audio issue

**Requested features**

- Delayed start option
- Ability to record custom voice messages
- More alarm sound options
- Apple Watch app
- Ability to organize timers into folders


### CheckOut Master

[App page](https://appshunter.io/ios/app/checkout-master/id6748267777)

Easily manage and track important equipment, especially in educational settings. This application simplifies the checkout process for shared resources.

**Highlights:** Equipment checkout tracking, Classroom equipment management, Easy-to-use interface, Designed for educational settings

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 1Timer free?

1Timer is free to download, with in-app purchases available.

### Is CheckOut Master free?

CheckOut Master costs $1.00, with no in-app purchases.

### Which has better reviews, 1Timer or CheckOut Master?

CheckOut Master is rated higher. 1Timer averages 4.7 out of 5 from 1.2K ratings, while CheckOut Master averages 5.0 from 1 ratings.

### Do 1Timer or CheckOut Master have ads?

1Timer shows ads; CheckOut Master does not.

### Which is updated more often, 1Timer or CheckOut Master?

1Timer ships an update every 6 weeks, and CheckOut Master every 2 days. Most recently, 1Timer was updated on October 15, 2026 and CheckOut Master on October 2, 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.*