# One Alarm vs TiZo Pro

The clearest difference is review sentiment: One Alarm at 51% against TiZo Pro's 0%. One Alarm also leads on price (Free vs $0.99) and rating (3.7 vs 3.0). TiZo Pro's advantage is in-app purchases (none vs 1). On ads, device support and iOS requirement there is nothing between them.

One Alarm is free to download; TiZo Pro costs $0.99 up front. One Alarm sells 1 one-off in-app purchase. TiZo Pro asks for nothing beyond the download.

One Alarm holds the better App Store score, 3.7 against 3.0. That said, the two scores are not equally well evidenced: One Alarm has 20 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 51% of One Alarm's written reviews are positive against 0% of TiZo Pro's.

One Alarm ships an update every 3 weeks, TiZo Pro every 5 months. The most recent releases landed on November 1, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | One Alarm | TiZo Pro |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[3.7 (20 ratings)](https://appshunter.io/ios/app/one-alarm/id420208602/reviews)** | [3.0 (1 ratings)](https://appshunter.io/ios/app/tizo-pro/id705228889/reviews) |
| Number of ratings | **20** | 1 |
| Positive reviews | **50.9% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 5 months |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 3 MB | 57 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [CW&T](https://appshunter.io/developer/403622462) | [Blowbend.jp](https://appshunter.io/developer/535422149) |

## What reviewers say

### One Alarm

[App page](https://appshunter.io/ios/app/one-alarm/id420208602)

A minimalist alarm clock designed for simplicity. Set alarms with a single tap by dragging the minute hand. A badge on the app icon shows a countdown to the alarm time.

**Highlights:** Minimalist interface, One-tap alarm setting, Drag minute hand to set time, AM/PM quick switch, Icon countdown badge

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| instant unlock | $0.99 | one-time |


### TiZo Pro

[App page](https://appshunter.io/ios/app/tizo-pro/id705228889)

This utility app displays the time in two different time zones simultaneously, with options for a day/night indicator and sound effects. It also includes a sub-screen for scheduling appointments and converting times.

**Highlights:** Dual time zone display, Day/night indicator, Tick-tack sound effect, Schedule appointments, Time conversion tool, 130+ city time zones

**In-app purchases:** none


## Frequently asked questions

### Is One Alarm free?

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

### Is TiZo Pro free?

TiZo Pro costs $0.99, with no in-app purchases.

### Which has better reviews, One Alarm or TiZo Pro?

One Alarm is rated higher. One Alarm averages 3.7 out of 5 from 20 ratings, while TiZo Pro averages 3.0 from 1 ratings.

### Do One Alarm or TiZo Pro have ads?

Neither One Alarm nor TiZo Pro shows ads.

### Which is updated more often, One Alarm or TiZo Pro?

One Alarm ships an update every 3 weeks, and TiZo Pro every 5 months. Most recently, One Alarm was updated on November 1, 2026 and TiZo Pro on November 6, 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.*