# PredictAlpha vs Proofline

The clearest difference is in-app purchases: PredictAlpha at none against Proofline's 2. Proofline's advantage is update cadence (every 4 days vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Proofline sells 2 in-app purchases, starting at $9.99 per month. PredictAlpha asks for nothing beyond the download.

PredictAlpha ships an update every 2 months, Proofline every 4 days. The most recent releases landed on June 28, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | PredictAlpha | Proofline |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/predictalpha/id6758376671/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 days** |
| Monetization | Free | — |
| Size | 15 MB | 89 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Via Labs LLC](https://appshunter.io/developer/1871743977) | [Naile Nursen Celik](https://appshunter.io/developer/1884698227) |

## What reviewers say

### PredictAlpha

[App page](https://appshunter.io/ios/app/predictalpha/id6758376671)

Gain an edge in prediction markets with this app. Analyze market data, track top traders, and receive smart alerts for trading opportunities. Visualize market relationships and manage your portfolio.

**Highlights:** Market discovery with Alpha Score, Signal digest for trending markets, Top trader leaderboard and profiles, Smart alerts for trading opportunities, Market constellation visualization, Portfolio tracking and PnL analysis

**Features:** macOS Compatibility

**In-app purchases:** none


### Proofline

[App page](https://appshunter.io/ios/app/proofline-trade-journal/id6761757526)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Proofline Pro Monthly | $9.99 | per month |
| Proofline Pro Annual | $99.99 | per year |


## Frequently asked questions

### Is PredictAlpha free?

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

### Is Proofline free?

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

### Do PredictAlpha or Proofline have ads?

Neither PredictAlpha nor Proofline shows ads.

### Which is updated more often, PredictAlpha or Proofline?

PredictAlpha ships an update every 2 months, and Proofline every 4 days. Most recently, PredictAlpha was updated on June 28, 2026 and Proofline on September 9, 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.*