# Trace Back vs Flux Loop

Trace Back and Flux Loop are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Trace Back | Flux Loop |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 11 days |
| Size | 33 MB | 8 MB |
| Requires iOS | **14.0** | 15 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [洪升 曹](https://appshunter.io/developer/1846114663) | [旭萍 张](https://appshunter.io/developer/1882426038) |

## What reviewers say

### Trace Back

[App page](https://appshunter.io/ios/app/trace-back/id6760021737)

**In-app purchases:** none


### Flux Loop

[App page](https://appshunter.io/ios/app/flux-loop-energy-path/id6760285319)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Trace Back free?

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

### Is Flux Loop free?

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

### Do Trace Back or Flux Loop have ads?

Neither Trace Back nor Flux Loop shows ads.

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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.*