# Stock Trading Signal Predictor vs Quantify.US

The clearest difference is update cadence: Stock Trading Signal Predictor at every 4 days against Quantify.US's every 3 weeks. On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Stock Trading Signal Predictor sells 13 in-app purchases, starting at $2.99 per year and Quantify.US sells 7 in-app purchases, starting at $3.99 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 Stock Trading Signal Predictor against 5.0 for Quantify.US. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

Stock Trading Signal Predictor ships an update every 4 days, Quantify.US every 3 weeks. Both last shipped on October 7, 2026.

## The numbers

| Metric | Stock Trading Signal Predictor | Quantify.US |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/stock-trading-signal-predictor/id6744266942/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/quantifyus/id6756243902/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 3 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 8 MB | 6 MB |
| Requires iOS | 16.6 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [WEALTHAI LIMITED](https://appshunter.io/developer/1784903892) | [志新 蔡](https://appshunter.io/developer/1252951112) |

## What reviewers say

### Stock Trading Signal Predictor

[App page](https://appshunter.io/ios/app/stock-trading-signal-predictor/id6744266942)

This AI-powered platform provides investors with market direction insights and helps review past decisions. It analyzes complex market data, offering structured intelligence for stocks, ETFs, options, and crypto. Gain clarity with AI-driven analysis, not just raw data.

**Highlights:** AI Stock Forecasts, Market Signals, Investment Calendar, Personal Decision Tracking, AI Podcast, Fundamental & Technical Synthesis, Macro & Event Impact Mapping

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

**In-app purchases (13)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Global Events on Stocks | $2.99 | per year |
| Day Trading Strategies | $2.99 | per year |
| Develop and Sell Mobile Apps | $2.99 | per year |
| Economics | $2.99 | per year |
| Business School Courses | $2.99 | per year |
| Ray Dalio | $2.99 | per year |
| Learning to Meditate | $2.99 | per year |
| Tariff Explanation | $2.99 | per year |
| Stock Heat Map | $6.99 | per year |
| How to invest in gold | $6.99 | per year |
| Pro会员月套餐 | $19.99 | per month |
| Pro会员年套餐 | $99.99 | per year |
| Unlock All graphs | $19.99 | one-time |


### Quantify.US

[App page](https://appshunter.io/ios/app/quantifyus/id6756243902)

Analyze stock, crypto, and forex charts with AI to generate trading plans. Upload a screenshot to receive instant insights on market structure, patterns, and indicators, including entry zones, profit targets, and stop-loss levels.

**Highlights:** Instant chart analysis from screenshots, AI-powered trading plan generation, Entry zones, profit targets, and stop-loss levels, Options strategy recommendations, Dual scoring system (Macro & Tech), Global market access (Stocks, Crypto, Forex)

**Features:** macOS Compatibility

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Basic | $3.99 | per month |
| Pro | $19.99 | per month |
| Elite | $59.99 | per month |
| Lightning Refill | $2.99 | one-time |
| Pro Refill | $6.99 | one-time |
| Elite Strategy Refill | $9.99 | one-time |
| Onetime | $29.99 | one-time |


## Frequently asked questions

### Is Stock Trading Signal Predictor free?

Stock Trading Signal Predictor is free to download, with in-app purchases available.

### Is Quantify.US free?

Quantify.US is free to download, with in-app purchases available.

### Which has better reviews, Stock Trading Signal Predictor or Quantify.US?

Stock Trading Signal Predictor and Quantify.US are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.

### Do Stock Trading Signal Predictor or Quantify.US have ads?

Neither Stock Trading Signal Predictor nor Quantify.US shows ads.

### Which is updated more often, Stock Trading Signal Predictor or Quantify.US?

Stock Trading Signal Predictor ships an update every 4 days, and Quantify.US every 3 weeks. Most recently, Stock Trading Signal Predictor was updated on October 7, 2026 and Quantify.US on October 7, 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.*