# Aptos End User vs Transformer Calc 2

The clearest difference is price: Aptos End User at Free against Transformer Calc 2's $3.99. Aptos End User also leads on rating (3.5 vs 1.0) and iOS requirement (12.0 vs 26.0). Transformer Calc 2's advantage is update cadence (every 2 months vs every 7 months). On review sentiment, ratings volume, ads and in-app purchases there is nothing between them.

Aptos End User is free to download; Transformer Calc 2 costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Aptos End User holds the better App Store score, 3.5 against 1.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews split almost evenly too, at 0% and 0% positive.

Aptos End User ships an update every 7 months, Transformer Calc 2 every 2 months. The most recent releases landed on September 11, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | Aptos End User | Transformer Calc 2 |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | **[3.5 (2 ratings)](https://appshunter.io/ios/app/aptos-end-user/id1589749162/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/transformer-calc-2/id1597015791/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 2 months** |
| Monetization | **Free** | Paid |
| Size | 31 MB | 16 MB |
| Requires iOS | **12.0** | 26.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Aptos Solar Technology LLC](https://appshunter.io/developer/1589720272) | [Snappy Appz Inc.](https://appshunter.io/developer/375591377) |

## What reviewers say

### Aptos End User

[App page](https://appshunter.io/ios/app/aptos-end-user/id1589749162)

Monitor your distributed PV power plants from anywhere. View real-time operating data, energy generation over various periods, and equipment alarms to ensure optimal performance and expected yield.

**Highlights:** Module-level monitoring, Real-time data display, Energy generation tracking (daily, monthly, annual, total), Alarm information display, Operation monitoring, Yield optimization

**Features:** macOS Compatibility

**In-app purchases:** none


### Transformer Calc 2

[App page](https://appshunter.io/ios/app/transformer-calc-2/id1597015791)

This app provides electricians with instant transformer sizing and advanced construction math, compliant with both US (NEC 2023) and Canadian (CEC 2024) electrical codes. It simplifies complex calculations for wire, conduit, and overcurrent protection, and includes a fractional construction calculator.

**Highlights:** Dual code compliance (NEC 2023, CEC 2024), Instant transformer sizing, Wire and conduit sizing, Overcurrent protection calculation, Fractional construction calculator, Unit conversion, Dark mode support

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Aptos End User free?

Aptos End User is free to download, with no in-app purchases.

### Is Transformer Calc 2 free?

Transformer Calc 2 costs $3.99, with no in-app purchases.

### Which has better reviews, Aptos End User or Transformer Calc 2?

Aptos End User is rated higher. Aptos End User averages 3.5 out of 5 from 2 ratings, while Transformer Calc 2 averages 1.0 from 1 ratings.

### Do Aptos End User or Transformer Calc 2 have ads?

Neither Aptos End User nor Transformer Calc 2 shows ads.

### Which is updated more often, Aptos End User or Transformer Calc 2?

Aptos End User ships an update every 7 months, and Transformer Calc 2 every 2 months. Most recently, Aptos End User was updated on September 11, 2026 and Transformer Calc 2 on June 1, 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.*