# World Time Check vs RLM

The clearest difference is price: RLM at Free against World Time Check's $0.99. RLM also leads on rating (5.0 vs 1.0) and update cadence (every 4 weeks vs every 5 months). World Time Check's advantage is in-app purchases (none vs 1). On ratings volume, ads, device support and iOS requirement there is nothing between them.

RLM is free to download; World Time Check costs $0.99 up front. RLM sells 1 one-off in-app purchase. World Time Check asks for nothing beyond the download.

RLM holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

World Time Check ships an update every 5 months, RLM every 4 weeks. The most recent releases landed on October 11, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | World Time Check | RLM |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/world-time-check/id521449019/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/rlm-10cx/id6466089794/reviews)** |
| Number of ratings | 1 | 1 |
| Positive reviews | 14.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 4 weeks** |
| Monetization | Paid | **Free** |
| Size | 1 MB | 6 MB |
| Requires iOS | 15.5 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SHUJI FUKUNAGA](https://appshunter.io/developer/469076836) | [R.L.M. Software](https://appshunter.io/developer/289639238) |

## What reviewers say

### World Time Check

[App page](https://appshunter.io/ios/app/world-time-check/id521449019)

Easily view and compare current times across multiple global cities simultaneously. This utility helps you coordinate international meetings or plan travel by showing time differences with intuitive scrolling and real-time synchronization.

**Highlights:** Multiple cities at once, Real-time sync, Check future times, Easy city search, Custom date & time, Daylight saving support

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

**In-app purchases:** none


### RLM

[App page](https://appshunter.io/ios/app/rlm-10cx/id6466089794)

This scientific calculator offers a comprehensive suite of tools for finance, business, statistics, and complex scientific calculations. It emulates a classic calculator while leveraging modern iOS device capabilities for ease of use and advanced functions.

**Highlights:** Finance and Business calculations, Date and Time interval calculations, Advanced Statistics and Curve Fitting, Complex Numbers and 3D Vectors, Unit and Currency Conversions, Equation Solver, Programmable functions

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Purchase | $9.99 | one-time |


## Frequently asked questions

### Is World Time Check free?

World Time Check costs $0.99, with no in-app purchases.

### Is RLM free?

RLM is free to download, with in-app purchases available.

### Which has better reviews, World Time Check or RLM?

RLM is rated higher. World Time Check averages 1.0 out of 5 from 1 ratings, while RLM averages 5.0 from 1 ratings.

### Do World Time Check or RLM have ads?

Neither World Time Check nor RLM shows ads.

### Which is updated more often, World Time Check or RLM?

World Time Check ships an update every 5 months, and RLM every 4 weeks. Most recently, World Time Check was updated on October 11, 2026 and RLM on September 30, 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.*