# Time + Date Calculator vs onlyAlarm

The clearest difference is price: onlyAlarm at Free against Time + Date Calculator's $0.99. Time + Date Calculator's advantage is device support (3 vs 1). On update cadence, ads, in-app purchases and iOS requirement there is nothing between them.

onlyAlarm is free to download; Time + Date Calculator costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Time + Date Calculator ships an update every 3 months, onlyAlarm every 4 months. The most recent releases landed on September 22, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Time + Date Calculator | onlyAlarm |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[4.7 (944 ratings)](https://appshunter.io/ios/app/time-plus-date-calculator/id545171310/reviews)** | — |
| Number of ratings | **944** | — |
| Positive reviews | 91.4% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 4 months |
| Monetization | Free | — |
| Size | 1 MB | 1 MB |
| Requires iOS | **15.6** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Thomas Tsopanakis](https://appshunter.io/developer/471022214) | [景洙 李](https://appshunter.io/developer/1762531319) |

## What reviewers say

### Time + Date Calculator

[App page](https://appshunter.io/ios/app/time-plus-date-calculator/id545171310)

Calculate time differences, work days, and add or subtract time periods. Convert between units like seconds, minutes, and years. Determine future or past dates and calculate age.

**Highlights:** Calculate time differences, Calculate work days, Add/subtract time, Multiply/divide time, Time converter, Date ranger, Age calculator

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

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- 🚀 Accurate time calculations
- 💡 Useful for various everyday tasks
- 🔒 Reliable and trustworthy
- ⏱️ Helpful for work and personal time management

**What reviewers complain about**

- 🐛 Occasional bugs or glitches
- 🔍 Unintuitive interface in some areas
- 💻 Limited input options (e.g. inability to type in times)

**Reported bugs**

- Error in adding days calculation
- Inconsistent behavior when inputting times

**Requested features**

- Add support for calculating all days, not just work days
- Implement a calendar view to track time and dates
- Allow users to save and view their time logs
- Provide an option to display time in decimal format


### onlyAlarm

[App page](https://appshunter.io/ios/app/onlyalarm/id6740790608)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Time + Date Calculator free?

Time + Date Calculator costs $0.99, with no in-app purchases.

### Is onlyAlarm free?

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

### Do Time + Date Calculator or onlyAlarm have ads?

Neither Time + Date Calculator nor onlyAlarm shows ads.

### Which is updated more often, Time + Date Calculator or onlyAlarm?

Time + Date Calculator ships an update every 3 months, and onlyAlarm every 4 months. Most recently, Time + Date Calculator was updated on September 22, 2026 and onlyAlarm on September 18, 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.*