# Date Radar Countdown Stopwatch vs CertLei Verifier

The clearest difference is in-app purchases: CertLei Verifier at none against Date Radar Countdown Stopwatch's 3. CertLei Verifier also leads on device support (3 vs 1) and iOS requirement (15.6 vs 17.0). On price, update cadence and ads 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. CertLei Verifier asks for nothing beyond the download.

Date Radar Countdown Stopwatch ships an update every 5 days, CertLei Verifier every 9 days. The most recent releases landed on September 17, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Date Radar Countdown Stopwatch | CertLei Verifier |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/date-radar-countdown-stopwatch/id6463448697/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 9 days |
| Monetization | Free with in-app purchases | — |
| Size | 7 MB | 29 MB |
| Requires iOS | 17.0 | **15.6** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Jin Yu](https://appshunter.io/developer/1054838879) | [Certizen Technology Limited](https://appshunter.io/developer/1564645035) |

## What reviewers say

### 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 |


### CertLei Verifier

[App page](https://appshunter.io/ios/app/certlei-verifier/id6761257520)

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

**In-app purchases:** none


## Frequently asked questions

### Is Date Radar Countdown Stopwatch free?

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

### Is CertLei Verifier free?

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

### Do Date Radar Countdown Stopwatch or CertLei Verifier have ads?

Neither Date Radar Countdown Stopwatch nor CertLei Verifier shows ads.

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

Date Radar Countdown Stopwatch ships an update every 5 days, and CertLei Verifier every 9 days. Most recently, Date Radar Countdown Stopwatch was updated on September 17, 2026 and CertLei Verifier on September 9, 2026.

---

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