Dr. LED vs Timezone Converter
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Dr. LED
This app helps users select and convert marine LED bulbs. It provides guidance for navigation lights (single, bicolor, tricolor) and interior/exterior lighting. Selections can be made based on incandescent bulb images, Ancor numbers, bulb trade numbers, or navigation light types.
- Marine LED bulb selection
- Conversion guide
- Navigation light options (single, bicolor, tricolor)
- Interior and exterior light options
- Selection by incandescent image
- Selection by Ancor/Trade numbers
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Marine LED bulb selection / conversion guide for Dr. LED bulbs. LED bulbs for single/bicolor/tricolor navigation lights and for interior and exterior lights. Selections from 1) Incandescent Bulb Images, 2) Ancor #, 3) Bulb Trade #, or 4) Navigation Lights.
Timezone Converter
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There wasn't a free, no ad, modern time converter app with no tracking... so I built one. See, and track cities by their time zone. See what time it would be in a city if it was a different time in your city. Help coordinate meetings accross time zones. If you like it, give me a review, I would appreciate it. If you want a new feature, write that in the review also.
Screenshots
Verdict
The clearest difference is update cadence: Timezone Converter at daily against Dr. LED's monthly. Timezone Converter also leads on ratings volume (5 vs 1). Dr. LED's advantage is rating (5.0 vs 4.6) and iOS requirement (13.0 vs 26.0). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Dr. LED holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Timezone Converter has 5 ratings behind it against 1, so its average is the more settled of the two.
Dr. LED ships an update monthly, Timezone Converter daily. The most recent releases landed on October 10, 2026 and October 24, 2026 respectively.
| Parameter | Dr. LED | Timezone Converter |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 4.6 (5 ratings) |
| Number of ratings | 1 | 5 — better |
| Update frequency | Monthly | Daily — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Requires iOS | 13.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 21 MB | 23 MB |
| Age rating | 4+ | 4+ |
| Developer | Dynamic Engineering Inc. | Shant Lokmanian |
In-app purchases
Dr. LED
No in-app purchases
Timezone Converter
No in-app purchases
Questions
Is Dr. LED free?
Is Timezone Converter free?
Which has better reviews, Dr. LED or Timezone Converter?
Do Dr. LED or Timezone Converter have ads?
Which is updated more often, Dr. LED or Timezone Converter?
Other comparisons
