# Reverse Efficient Frontier App vs Safe to Spend 365

The clearest difference is ads: Reverse Efficient Frontier App at none against Safe to Spend 365's shown. Safe to Spend 365's advantage is update cadence (every 2 days vs every 10 months). On price, rating, ratings volume and in-app purchases 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 Safe to Spend 365 sells 5 in-app purchases, starting at $3.49 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for Reverse Efficient Frontier App against 5.0 for Safe to Spend 365. Both are backed by a comparable volume of ratings — 3 and 3 respectively.

Reverse Efficient Frontier App ships an update every 10 months, Safe to Spend 365 every 2 days. The most recent releases landed on October 30, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Reverse Efficient Frontier App | Safe to Spend 365 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/reverse-efficient-frontier-app/id6748159202/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/safe-to-spend-365-budget-ai/id6792137232/reviews) |
| Number of ratings | 3 | 3 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 10 months | **Every 2 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 34 MB | 68 MB |
| Requires iOS | **15.1** | 16.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Aula Dluseyi Olowiwee](https://appshunter.io/developer/1773135198) | [AtlasForge Financial, LLC](https://appshunter.io/developer/6792137234) |

## What reviewers say

### Reverse Efficient Frontier App

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

This app helps investors build optimal S&P 500 portfolios by defining desired returns and risk levels. It visualizes allocations and provides data-driven insights for smarter investment decisions.

**Highlights:** Reverse Efficient Frontier Optimization, S&P 500 Stock Universe, Interactive Frontier Visualization, Detailed Allocation Pie Chart, Modern Design, Educational Content

**Features:** macOS Compatibility

**In-app purchases (2)**

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


### Safe to Spend 365

[App page](https://appshunter.io/ios/app/safe-to-spend-365-budget-ai/id6792137232)

This app provides a single, clear daily spending number after accounting for bills, savings, and a safety buffer. It offers bank connection or manual entry, cash flow forecasting, and an AI Money Coach to answer financial questions in plain English.

**Highlights:** Daily safe spending number, Bank connection or manual entry, Cash flow forecasting, AI Money Coach, Debt payoff planner, Goal setting, Family and couples plan

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro - Founder Offer | $3.49 | per month |
| Pro · Monthly | $4.99 | per month |
| Family & Partner · Monthly | $9.99 | per month |
| Pro · Annual | $39.00 | per year |
| Family & Partner · Annual | $79.00 | per year |


## Frequently asked questions

### Is Reverse Efficient Frontier App free?

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

### Is Safe to Spend 365 free?

Safe to Spend 365 is free to download, with in-app purchases available.

### Which has better reviews, Reverse Efficient Frontier App or Safe to Spend 365?

Reverse Efficient Frontier App and Safe to Spend 365 are both rated 5.0 out of 5 on the App Store, from 3 and 3 ratings respectively.

### Do Reverse Efficient Frontier App or Safe to Spend 365 have ads?

Safe to Spend 365 shows ads; Reverse Efficient Frontier App does not.

### Which is updated more often, Reverse Efficient Frontier App or Safe to Spend 365?

Reverse Efficient Frontier App ships an update every 10 months, and Safe to Spend 365 every 2 days. Most recently, Reverse Efficient Frontier App was updated on October 30, 2026 and Safe to Spend 365 on November 6, 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.*