# LED Resistor Calculator Plus vs Bolt Torque Spec Calc

The clearest difference is rating: LED Resistor Calculator Plus at 4.8 against Bolt Torque Spec Calc's 3.0. LED Resistor Calculator Plus also leads on ratings volume (8 vs 1) and price ($2.99 vs $4.99). Bolt Torque Spec Calc's advantage is update cadence (every 3 weeks vs every 47 months). On review sentiment, ads, in-app purchases and monetization model there is nothing between them.

LED Resistor Calculator Plus costs $2.99 and Bolt Torque Spec Calc $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

LED Resistor Calculator Plus holds the better App Store score, 4.8 against 3.0. That said, the two scores are not equally well evidenced: LED Resistor Calculator Plus has 8 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 0% and 0% positive.

LED Resistor Calculator Plus ships an update every 47 months, Bolt Torque Spec Calc every 3 weeks. The most recent releases landed on November 6, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | LED Resistor Calculator Plus | Bolt Torque Spec Calc |
| --- | --- | --- |
| Price | **$2.99** | $4.99 |
| Rating | **[4.8 (8 ratings)](https://appshunter.io/ios/app/led-resistor-calculator-plus/id1369457811/reviews)** | [3.0 (1 ratings)](https://appshunter.io/ios/app/bolt-torque-spec-calc/id6760930975/reviews) |
| Number of ratings | **8** | 1 |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 47 months | **Every 3 weeks** |
| Monetization | Paid | Paid |
| Size | 1 MB | 1 MB |
| Requires iOS | **13** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Nitrio](https://appshunter.io/developer/321121189) | [Shanghai Sheyuan Network Technology Co., Ltd.](https://appshunter.io/developer/1560626858) |

## What reviewers say

### LED Resistor Calculator Plus

[App page](https://appshunter.io/ios/app/led-resistor-calculator-plus/id1369457811)

Calculate the correct series resistor needed to safely power light-emitting diodes. Input supply voltage, LED voltage drop, current, and the number of LEDs to find the required resistor value and wattage.

**Highlights:** Calculate series resistor value, Determine resistor power dissipation, Recommend resistor wattage, Supports multiple LEDs in series, Input supply voltage, LED voltage, and current

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

**In-app purchases:** none


### Bolt Torque Spec Calc

[App page](https://appshunter.io/ios/app/bolt-torque-spec-calc/id6760930975)

Calculates bolt torque specifications for various SAE and metric sizes and grades. Provides results in both ft-lb and N·m, accounting for dry or lubricated conditions. Works offline without ads or subscriptions.

**Highlights:** SAE and Metric bolt specifications, 28 SAE and 17 Metric sizes, Dry vs. Lubricated multiplier, Torque in ft-lb and N·m, Offline functionality, Formula and K factor shown

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

**In-app purchases:** none


## Frequently asked questions

### Is LED Resistor Calculator Plus free?

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

### Is Bolt Torque Spec Calc free?

Bolt Torque Spec Calc costs $4.99, with no in-app purchases.

### Which has better reviews, LED Resistor Calculator Plus or Bolt Torque Spec Calc?

LED Resistor Calculator Plus is rated higher. LED Resistor Calculator Plus averages 4.8 out of 5 from 8 ratings, while Bolt Torque Spec Calc averages 3.0 from 1 ratings.

### Do LED Resistor Calculator Plus or Bolt Torque Spec Calc have ads?

Neither LED Resistor Calculator Plus nor Bolt Torque Spec Calc shows ads.

### Which is updated more often, LED Resistor Calculator Plus or Bolt Torque Spec Calc?

LED Resistor Calculator Plus ships an update every 47 months, and Bolt Torque Spec Calc every 3 weeks. Most recently, LED Resistor Calculator Plus was updated on November 6, 2026 and Bolt Torque Spec Calc on October 31, 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.*