# LED Ohm Calc vs Transformer Calculator Plus

The clearest difference is review sentiment: LED Ohm Calc at 64% against Transformer Calculator Plus's 0%. LED Ohm Calc also leads on rating (4.3 vs 3.3) and update cadence (every 10 days vs every 45 months). Transformer Calculator Plus's advantage is iOS requirement (13.0 vs 15.6). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

LED Ohm Calc costs $0.99 and Transformer Calculator Plus $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

LED Ohm Calc holds the better App Store score, 4.3 against 3.3. Both are backed by a comparable volume of ratings — 6 and 4 respectively. Written reviews point the same way: 64% of LED Ohm Calc's written reviews are positive against 0% of Transformer Calculator Plus's.

LED Ohm Calc ships an update every 10 days, Transformer Calculator Plus every 45 months. The most recent releases landed on October 15, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | LED Ohm Calc | Transformer Calculator Plus |
| --- | --- | --- |
| Price | **$0.99** | $2.99 |
| Rating | **[4.3 (6 ratings)](https://appshunter.io/ios/app/led-ohm-calc/id390985541/reviews)** | [3.3 (4 ratings)](https://appshunter.io/ios/app/transformer-calculator-plus/id1372528401/reviews) |
| Number of ratings | **6** | 4 |
| Positive reviews | **64.3% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 45 months |
| Monetization | Paid | Paid |
| Size | 2 MB | 1 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Mimi Apps&technologies](https://appshunter.io/developer/390985544) | [Nitrio](https://appshunter.io/developer/321121189) |

## What reviewers say

### LED Ohm Calc

[App page](https://appshunter.io/ios/app/led-ohm-calc/id390985541)

This utility simplifies calculating LED resistors by handling various voltages, decimal values, and multiple LEDs. It offers intuitive input methods for power supply and LED ratings, making complex calculations straightforward.

**Highlights:** Calculate LED resistors, Handle various power supply voltages, Input decimal LED voltage ratings, Calculate current and wattage, Support for multiple LEDs, Intuitive slide bar and text input

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

**In-app purchases:** none


### Transformer Calculator Plus

[App page](https://appshunter.io/ios/app/transformer-calculator-plus/id1372528401)

This utility app calculates key parameters for transformers, including voltage, current, and turns ratio. It helps determine if a transformer is step-up or step-down, essential for power conversion applications.

**Highlights:** Calculate primary and secondary voltage, Calculate primary and secondary current, Calculate transformer turns ratio, Determine step-up or step-down transformer, Supports AC voltage calculations

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

**In-app purchases:** none


## Frequently asked questions

### Is LED Ohm Calc free?

LED Ohm Calc costs $0.99, with no in-app purchases.

### Is Transformer Calculator Plus free?

Transformer Calculator Plus costs $2.99, with no in-app purchases.

### Which has better reviews, LED Ohm Calc or Transformer Calculator Plus?

LED Ohm Calc is rated higher. LED Ohm Calc averages 4.3 out of 5 from 6 ratings, while Transformer Calculator Plus averages 3.3 from 4 ratings.

### Do LED Ohm Calc or Transformer Calculator Plus have ads?

Neither LED Ohm Calc nor Transformer Calculator Plus shows ads.

### Which is updated more often, LED Ohm Calc or Transformer Calculator Plus?

LED Ohm Calc ships an update every 10 days, and Transformer Calculator Plus every 45 months. Most recently, LED Ohm Calc was updated on October 15, 2026 and Transformer Calculator Plus on October 14, 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.*