# REDRIE FLY vs CartCalc+

The clearest difference is price: REDRIE FLY at Free against CartCalc+'s $0.99. REDRIE FLY also leads on iOS requirement (11.0 vs 15.1). CartCalc+'s advantage is update cadence (every 4 days vs every 5 weeks). On ads, in-app purchases and device support there is nothing between them.

REDRIE FLY is free to download; CartCalc+ costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

REDRIE FLY ships an update every 5 weeks, CartCalc+ every 4 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | REDRIE FLY | CartCalc+ |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[3.1 (40 ratings)](https://appshunter.io/ios/app/redrie-fly/id6454712732/reviews)** | — |
| Number of ratings | **40** | — |
| Positive reviews | 38.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 4 days** |
| Monetization | Free | — |
| Size | 101 MB | 30 MB |
| Requires iOS | **11.0** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [ShanTou City Vison Electronictechnology Co., Ltd.](https://appshunter.io/developer/1388222999) | [MAXWELL JEREMIAH DROWN](https://appshunter.io/developer/1895851818) |

## What reviewers say

### REDRIE FLY

[App page](https://appshunter.io/ios/app/redrie-fly/id6454712732)

Control your drone remotely via WiFi for real-time video transmission. Capture photos and videos with a variety of creative filter effects.

**Highlights:** Real-time video transmission, Remote drone control, Photo and video capture, Filter effects

**Features:** macOS Compatibility

**In-app purchases:** none


### CartCalc+

[App page](https://appshunter.io/ios/app/cartcalc-plus/id6768182117)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is REDRIE FLY free?

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

### Is CartCalc+ free?

CartCalc+ costs $0.99, with no in-app purchases.

### Do REDRIE FLY or CartCalc+ have ads?

Neither REDRIE FLY nor CartCalc+ shows ads.

### Which is updated more often, REDRIE FLY or CartCalc+?

REDRIE FLY ships an update every 5 weeks, and CartCalc+ every 4 days. Most recently, REDRIE FLY was updated on October 24, 2026 and CartCalc+ on October 25, 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.*