# Ohms Law Calc. vs CanvLess

The clearest difference is update cadence: CanvLess at daily against Ohms Law Calc.'s every 2 months. CanvLess also leads on rating (5.0 vs 4.7). Ohms Law Calc.'s advantage is ratings volume (1.3K vs 2). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Ohms Law Calc. sells 1 one-off in-app purchase and CanvLess sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

CanvLess holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Ohms Law Calc. has 1.3K ratings behind it against 2, so its average is the more settled of the two.

Ohms Law Calc. ships an update every 2 months, CanvLess daily. Both last shipped on October 29, 2026.

## The numbers

| Metric | Ohms Law Calc. | CanvLess |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (1.3K ratings)](https://appshunter.io/ios/app/ohms-law-calc/id491898006/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/canvless/id6818211233/reviews)** |
| Number of ratings | **1.3K** | 2 |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 2 months | **Daily** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 59 MB | 67 MB |
| Requires iOS | 17.6 | **16.4** |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [V PUGAZHENTHI](https://appshunter.io/developer/491898049) | [AAK Studio LLC](https://appshunter.io/developer/1896125110) |

## What reviewers say

### Ohms Law Calc.

[App page](https://appshunter.io/ios/app/ohms-law-calc/id491898006)

This app provides a comprehensive suite of electrical calculations, including Ohm's Law, voltage drop, wire sizing, and impedance. It also offers numerous converters for various electrical units and parameters, aiding in circuit design and analysis.

**Highlights:** Ohm's Law calculations, Voltage drop calculator, Wire size calculator, Impedance calculations (R, L, C), Electrical unit converters, Power and current conversions, Circuit design tools

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ohms Law Calc. | $3.99 | one-time |

**What reviewers like**

- 🚀 Great value
- 🚀 Works perfectly
- 🚀 Fantastic app
- 👍 Best thing since sliced bread
- 🚀 Useful for electrical work

**What reviewers complain about**

- 👎 Have to pay again for an app already purchased
- 👎 Not easy to use
- 🐛 Paid but not unlocked, no response from developer
- 👎 Annoying pop-ups
- 🐛 Keeps shutting down

**Reported bugs**

- Paid version not unlocking
- Repeatedly prompting for payment after already paid
- Keyboard overlaying results making it difficult to see

**Requested features**

- Add more electrical conversions and calculations
- Add ability to input voltage and resistance to get amps and watts
- Add kVA, rms, and other popular needed conversions


### CanvLess

[App page](https://appshunter.io/ios/app/canvless/id6818211233)

This app provides a shared map of security cameras for verified law enforcement personnel. It helps investigators quickly identify camera locations, viewing angles, and footage retention times to efficiently gather evidence after an incident. The platform ensures accountability through user logging and watermarking.

**Highlights:** Shared security camera map, Camera location and direction, Footage retention tracking, Camera verification system, Apple Watch integration, Secure user authentication

**Features:** Apple Watch app

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Canvless Monthly | $3.99 | per month |
| Canvless Yearly | $39.99 | per year |


## Frequently asked questions

### Is Ohms Law Calc. free?

Ohms Law Calc. is free to download, with in-app purchases available.

### Is CanvLess free?

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

### Which has better reviews, Ohms Law Calc. or CanvLess?

CanvLess is rated higher. Ohms Law Calc. averages 4.7 out of 5 from 1.3K ratings, while CanvLess averages 5.0 from 2 ratings.

### Do Ohms Law Calc. or CanvLess have ads?

Both Ohms Law Calc. and CanvLess show ads.

### Which is updated more often, Ohms Law Calc. or CanvLess?

Ohms Law Calc. ships an update every 2 months, and CanvLess daily. Most recently, Ohms Law Calc. was updated on October 29, 2026 and CanvLess on October 29, 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.*