# Phase Calc vs RecoTac

The clearest difference is price: RecoTac at Free against Phase Calc's $1.99. RecoTac also leads on update cadence (every 8 days vs every 6 weeks) and iOS requirement (13.0 vs 17.0). Phase Calc's advantage is in-app purchases (none vs 10) and ratings volume (4 vs 1). On rating, review sentiment, ads and device support there is nothing between them.

RecoTac is free to download; Phase Calc costs $1.99 up front. RecoTac sells 10 one-off in-app purchases. Phase Calc asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Phase Calc against 5.0 for RecoTac. Both are backed by a comparable volume of ratings — 4 and 1 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Phase Calc ships an update every 6 weeks, RecoTac every 8 days. The most recent releases landed on November 9, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Phase Calc | RecoTac |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | [5.0 (4 ratings)](https://appshunter.io/ios/app/phase-calc/id837266300/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/recotac/id6741752381/reviews) |
| Number of ratings | **4** | 1 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 8 days** |
| Monetization | Paid | **Free** |
| Size | 13 MB | 127 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Donnie Herman](https://appshunter.io/developer/837266303) | [Proexpress Distributor LLC](https://appshunter.io/developer/1274436239) |

## What reviewers say

### Phase Calc

[App page](https://appshunter.io/ios/app/phase-calc/id837266300)

This advanced engineering app performs complex electrical calculations for three-phase power systems. It offers tools for students, technicians, and engineers to analyze unbalanced systems, perform sequence transformations, and access reference libraries. Results can be easily exported for documentation and sharing.

**Highlights:** Symmetrical component analysis, Three-phase power system calculations, Phase-to-sequence and sequence-to-phase transformations, Polar and rectangular input support, Specialized calculators and reference libraries, Exportable results for documentation

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

**In-app purchases:** none


### RecoTac

[App page](https://appshunter.io/ios/app/recotac/id6741752381)

Control and manage wildlife cameras remotely. View live feeds, receive motion alerts, and download captured photos and videos. Customize camera settings and schedules for efficient surveillance.

**Highlights:** Remote camera operation, HD photo and video recording, PIR sensor trigger notifications, GPS alerts, Device status monitoring, Cloud storage and sharing

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Basic/Monthly | $4.99 | one-time |
| Premier/Monthly. | $6.99 | one-time |
| Premier/Monthly | $7.99 | one-time |
| Supreme/Monthly. | $10.99 | one-time |
| Supreme/Monthly | $11.99 | one-time |
| Basic/Yearly | $54.99 | one-time |
| Premier/Yearly. | $74.99 | one-time |
| Premier/Yearly | $84.99 | one-time |
| Supreme/Yearly. | $109.99 | one-time |
| Supreme/Yearly | $119.99 | one-time |


## Frequently asked questions

### Is Phase Calc free?

Phase Calc costs $1.99, with no in-app purchases.

### Is RecoTac free?

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

### Which has better reviews, Phase Calc or RecoTac?

Phase Calc and RecoTac are both rated 5.0 out of 5 on the App Store, from 4 and 1 ratings respectively.

### Do Phase Calc or RecoTac have ads?

Neither Phase Calc nor RecoTac shows ads.

### Which is updated more often, Phase Calc or RecoTac?

Phase Calc ships an update every 6 weeks, and RecoTac every 8 days. Most recently, Phase Calc was updated on November 9, 2026 and RecoTac on November 5, 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.*