Post Matrix Scan vs Prime Time NTP
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Post Matrix Scan
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Scan and decode Data Matrix codes on franked mail (DV-Freimachung 1.54, Internetmarke). FEATURES: - Scan Data Matrix codes using your camera - Import images from your photo library - Enter hex data manually - Quick Actions: Long-press the app icon to scan, import image, or enter hex code - View detailed code information including: - Sender identification (crowdsourced) - Product type (letter, parcel, etc.) - Postage value - Submission date - Customer number (EKP) - Contribute sender identifications to help the community - Support for German and English This app decodes the data encoded in postal Data Matrix franking codes, giving you insight into postage information that would otherwise be unreadable. Includes the current product catalog V60 with all postage rates. This app is not affiliated with or endorsed by Deutsche Post AG.
Prime Time NTP
This utility app displays the precise current time, accurate to the millisecond, by querying multiple NTP servers. It offers detailed insights into clock synchronization and network performance, with advanced features available via a one-time purchase.
- Millisecond time display
- Queries multiple NTP servers
- Detailed sync accuracy
- Network performance metrics
- Adaptive polling
- One-time Pro upgrade
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"Prime Time" is a high-precision time app that shows the true time, accurate to the millisecond. It queries multiple NTP servers directly — the same infrastructure that keeps the internet in sync — and works out the correct time from their answers. Your device's own clock is never used for the display. [New in version 1.2] • The complete four-timestamp NTP exchange. The time a server spends preparing its reply is now removed from the measured delay instead of being counted as network transit. • A clock filter. Each server keeps its last eight exchanges, and the one with the lowest synchronization distance is used — not simply the newest — so one congested query no longer drags the reading with it. • Best-source marking. A green double ring shows the server with the lowest estimated error. The device offset is measured from that server and quoted with its ± accuracy. • Wi-Fi and cellular awareness. The link in use is shown, and an optional warm-up avoids measuring a radio that has just woken from idle. • Two in-app help screens explaining every mark on the display, and the reasoning behind how often servers are queried. • Japanese interface when the device language is Japanese. [Free] • Real-time sync with up to 5 NTP servers • Millisecond display, refreshed up to 120 times a second on ProMotion screens • Offset and round-trip time per server, with sparkline history • Stratum and reference clock ID per server • Adaptive polling that eases off as a server proves steady [Pro — one-time purchase, no subscription] • Manual sync on demand • Keep the screen awake while the app is open • Up to 30 NTP servers monitored at once A note on accuracy: a round trip is a single number covering two unknown halves, and nothing in the exchange reveals how it was divided. Prime Time widens the reported ± rather than inventing a correction to hide it. On cellular, where the two directions are least alike, that margin is wider — and shown. Made for developers, network engineers, and anyone curious about how far off their device's clock really is.
Screenshots
Verdict
The clearest difference is in-app purchases: Post Matrix Scan at none against Prime Time NTP's 1. Post Matrix Scan also leads on update cadence (weekly vs every 3 months) and iOS requirement (16.0 vs 26.0). On price, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Prime Time NTP sells 1 one-off in-app purchase. Post Matrix Scan asks for nothing beyond the download.
Post Matrix Scan ships an update weekly, Prime Time NTP every 3 months. The most recent releases landed on September 7, 2026 and August 27, 2026 respectively.
| Parameter | Post Matrix Scan | Prime Time NTP |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.0 (1 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Weekly — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Freemium |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 2 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Philipp Kursawe | Kentaro Saito |
In-app purchases
Post Matrix Scan
No in-app purchases
Prime Time NTP
- Premium Features$9.99
Questions
Is Post Matrix Scan free?
Is Prime Time NTP free?
Do Post Matrix Scan or Prime Time NTP have ads?
Which is updated more often, Post Matrix Scan or Prime Time NTP?
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