# Reverse Efficient Frontier App vs Bull Signals

The clearest difference is ads: Reverse Efficient Frontier App at none against Bull Signals's shown. Reverse Efficient Frontier App also leads on iOS requirement (15.1 vs 17.0). Bull Signals's advantage is update cadence (daily vs every 10 months). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Reverse Efficient Frontier App sells 2 in-app purchases, starting at $9.99 per month and Bull Signals sells 1 in-app purchase, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

Reverse Efficient Frontier App ships an update every 10 months, Bull Signals daily. The most recent releases landed on September 10, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Reverse Efficient Frontier App | Bull Signals |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (52 ratings)](https://appshunter.io/ios/app/bull-signals/id6761033362/reviews)** |
| Number of ratings | — | **52** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 10 months | **Daily** |
| Monetization | — | Free with in-app purchases |
| Size | 34 MB | 39 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Aula Dluseyi Olowiwee](https://appshunter.io/developer/1773135198) | [Mevo Studios LLC](https://appshunter.io/developer/575456704) |

## What reviewers say

### Reverse Efficient Frontier App

[App page](https://appshunter.io/ios/app/reverse-efficient-frontier-app/id6748159202)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $9.99 | per month |
| Premium Yearly | $99.99 | per year |


### Bull Signals

[App page](https://appshunter.io/ios/app/bull-signals/id6761033362)

Get real-time stock and crypto alerts, news, and interactive charts with technical indicators. Visualize price changes instantly and organize assets with custom groups. Stay informed with live market data and a clean, intuitive interface.

**Highlights:** Real-time data and news, Interactive technical charts, 24/7 push notification alerts, Stocks and crypto in one app, Crypto Fear and Greed Index, Customizable asset groups

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Bull Signals Pro | $3.99 | per month |


## Frequently asked questions

### Is Reverse Efficient Frontier App free?

Reverse Efficient Frontier App is free to download, with in-app purchases available.

### Is Bull Signals free?

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

### Do Reverse Efficient Frontier App or Bull Signals have ads?

Bull Signals shows ads; Reverse Efficient Frontier App does not.

### Which is updated more often, Reverse Efficient Frontier App or Bull Signals?

Reverse Efficient Frontier App ships an update every 10 months, and Bull Signals daily. Most recently, Reverse Efficient Frontier App was updated on September 10, 2026 and Bull Signals on September 24, 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.*