# Forethumb いろは vs Prime Time NTP

The clearest difference is price: Prime Time NTP at Free against Forethumb いろは's $0.99. Prime Time NTP also leads on review sentiment (100% vs 58%) and update cadence (every 6 weeks vs every 31 months). Forethumb いろは's advantage is in-app purchases (none vs 1) and iOS requirement (16.4 vs 26.0). On ads and device support there is nothing between them.

Prime Time NTP is free to download; Forethumb いろは costs $0.99 up front. Prime Time NTP sells 1 one-off in-app purchase. Forethumb いろは asks for nothing beyond the download.

Forethumb いろは ships an update every 31 months, Prime Time NTP every 6 weeks. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Forethumb いろは | Prime Time NTP |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[4.0 (1 ratings)](https://appshunter.io/ios/app/prime-time-ntp/id6759555624/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 58.3% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 31 months | **Every 6 weeks** |
| Monetization | Paid | **Freemium** |
| Size | 37 MB | 11 MB |
| Requires iOS | **16.4** | 26.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Takuto Nakamura](https://appshunter.io/developer/1203150472) | [Kentaro Saito](https://appshunter.io/developer/1879482946) |

## What reviewers say

### Forethumb いろは

[App page](https://appshunter.io/ios/app/forethumb/id1351876497)

This app enables Japanese Morse code input on your iOS device. Once you memorize the codes, you can type even with your eyes closed. It supports single-key or paddle input with audible feedback and customizable spacing.

**Highlights:** Japanese Morse code input, Single-key or paddle input, Audible Morse feedback, Customizable space intervals, Swipe gestures for delete/space

**Features:** Vision Pro support

**In-app purchases:** none


### Prime Time NTP

[App page](https://appshunter.io/ios/app/prime-time-ntp/id6759555624)

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.

**Highlights:** Millisecond time display, Queries multiple NTP servers, Detailed sync accuracy, Network performance metrics, Adaptive polling, One-time Pro upgrade

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Features | $4.99 | one-time |


## Frequently asked questions

### Is Forethumb いろは free?

Forethumb いろは costs $0.99, with no in-app purchases.

### Is Prime Time NTP free?

Prime Time NTP is free to download, with in-app purchases available.

### Do Forethumb いろは or Prime Time NTP have ads?

Neither Forethumb いろは nor Prime Time NTP shows ads.

### Which is updated more often, Forethumb いろは or Prime Time NTP?

Forethumb いろは ships an update every 31 months, and Prime Time NTP every 6 weeks. Most recently, Forethumb いろは was updated on October 25, 2026 and Prime Time NTP on October 24, 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.*