# i vs 3Dcalc+

The clearest difference is review sentiment: 3Dcalc+ at 100% against i's 50%. 3Dcalc+ also leads on rating (5.0 vs 3.0) and update cadence (weekly vs every 6 months). i's advantage is price (Free vs $4.99) and iOS requirement (7.1 vs 17.6). On ads, in-app purchases and device support there is nothing between them.

i is free to download; 3Dcalc+ costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

3Dcalc+ holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 8 respectively. Written reviews point the same way: 50% of i's written reviews are positive against 100% of 3Dcalc+'s.

i ships an update every 6 months, 3Dcalc+ weekly. The most recent releases landed on November 2, 2026 and November 12, 2026 respectively.

## The numbers

| Metric | i | 3Dcalc+ |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | [3.0 (2 ratings)](https://appshunter.io/ios/app/i-hawk-eye/id1103239839/reviews) | **[5.0 (8 ratings)](https://appshunter.io/ios/app/3dcalc-plus/id6752701677/reviews)** |
| Number of ratings | 2 | **8** |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Weekly** |
| Monetization | **Free** | Paid |
| Size | 23 MB | 23 MB |
| Requires iOS | **7.1** | 17.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [永忠 林](https://appshunter.io/developer/530041652) | [Juan Jose Coll Garcia](https://appshunter.io/developer/1840613487) |

## What reviewers say

### i

[App page](https://appshunter.io/ios/app/i-hawk-eye/id1103239839)

Control your four-axis aircraft remotely using your iOS device. Stream real-time video from the aircraft's camera and capture photos or videos directly to your phone or tablet.

**Highlights:** Remote aircraft control, Real-time video streaming, Photo capture, Video recording, WiFi protocol integration

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

**In-app purchases:** none


### 3Dcalc+

[App page](https://appshunter.io/ios/app/3dcalc-plus/id6752701677)

This app helps makers, designers, and 3D printing businesses accurately calculate project costs. It considers materials, print time, and power consumption to provide clear quotes, saving time and avoiding surprises in estimates.

**Highlights:** Calculate project costs, Consider materials, Estimate print time, Factor in power consumption, Generate clear quotes, Track expenses

**In-app purchases:** none


## Frequently asked questions

### Is i free?

i is free to download, with no in-app purchases.

### Is 3Dcalc+ free?

3Dcalc+ costs $4.99, with no in-app purchases.

### Which has better reviews, i or 3Dcalc+?

3Dcalc+ is rated higher. i averages 3.0 out of 5 from 2 ratings, while 3Dcalc+ averages 5.0 from 8 ratings.

### Do i or 3Dcalc+ have ads?

Neither i nor 3Dcalc+ shows ads.

### Which is updated more often, i or 3Dcalc+?

i ships an update every 6 months, and 3Dcalc+ weekly. Most recently, i was updated on November 2, 2026 and 3Dcalc+ on November 12, 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.*