# WonderCalc vs Date Radar Countdown Stopwatch

The clearest difference is in-app purchases: WonderCalc at none against Date Radar Countdown Stopwatch's 3. WonderCalc also leads on ratings volume (3 vs 1). Date Radar Countdown Stopwatch's advantage is rating (5.0 vs 4.7). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Date Radar Countdown Stopwatch sells 3 in-app purchases, starting at $0.29 per 3 months. WonderCalc asks for nothing beyond the download.

Date Radar Countdown Stopwatch holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 3 and 1 respectively.

Both ship on a similar rhythm, roughly every 5 days. Both last shipped on November 3, 2026.

## The numbers

| Metric | WonderCalc | Date Radar Countdown Stopwatch |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (3 ratings)](https://appshunter.io/ios/app/wondercalc/id6444459924/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/date-radar-countdown-stopwatch/id6463448697/reviews)** |
| Number of ratings | **3** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 days | Every 5 days |
| Monetization | **Free** | Free with in-app purchases |
| Size | 5 MB | 7 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [SharkMonkey Apps](https://appshunter.io/developer/1654824300) | [Jin Yu](https://appshunter.io/developer/1054838879) |

## What reviewers say

### WonderCalc

[App page](https://appshunter.io/ios/app/wondercalc/id6444459924)

This utility app handles all your basic calculation needs, including unit conversions for length, weight, and temperature. It also offers advanced financial calculations for loans, such as monthly payments, total cost, and interest paid.

**Highlights:** Basic calculations, Cut, copy, and paste functionality, Unit conversions (length, weight, temperature), Loan payment calculations, Total loan cost and interest calculation

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

**In-app purchases:** none


### Date Radar Countdown Stopwatch

[App page](https://appshunter.io/ios/app/date-radar-countdown-stopwatch/id6463448697)

Easily store significant dates and calculate the time elapsed since or until them. This utility helps you keep track of important events and milestones.

**Highlights:** Store important dates, Calculate ages, Long-term timers, Event tracking

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3 month | $0.29 | per 3 months |
| 1 Year | $0.99 | per year |
| Coffee sponsor | $6.99 | one-time |


## Frequently asked questions

### Is WonderCalc free?

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

### Is Date Radar Countdown Stopwatch free?

Date Radar Countdown Stopwatch is free to download, with in-app purchases available.

### Which has better reviews, WonderCalc or Date Radar Countdown Stopwatch?

Date Radar Countdown Stopwatch is rated higher. WonderCalc averages 4.7 out of 5 from 3 ratings, while Date Radar Countdown Stopwatch averages 5.0 from 1 ratings.

### Do WonderCalc or Date Radar Countdown Stopwatch have ads?

Neither WonderCalc nor Date Radar Countdown Stopwatch shows ads.

### Which is updated more often, WonderCalc or Date Radar Countdown Stopwatch?

WonderCalc ships an update every 5 days, and Date Radar Countdown Stopwatch every 5 days. Most recently, WonderCalc was updated on November 3, 2026 and Date Radar Countdown Stopwatch on November 3, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*