# CARL app vs Let Bob

The clearest difference is ads: CARL app at none against Let Bob's shown. Let Bob's advantage is update cadence (every 4 days vs every 6 weeks) and iOS requirement (12.4 vs 15.6). On price, in-app purchases and device support there is nothing between them.

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

CARL app ships an update every 6 weeks, Let Bob every 4 days. The most recent releases landed on June 4, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | CARL app | Let Bob |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (15 ratings)](https://appshunter.io/ios/app/carl-app/id1518314520/reviews)** | — |
| Number of ratings | **15** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 6 weeks | **Every 4 days** |
| Monetization | Free | — |
| Size | 29 MB | 46 MB |
| Requires iOS | 15.6 | **12.4** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [CARL, Inc.](https://appshunter.io/developer/1518314519) | [Let Bob](https://appshunter.io/developer/1552851137) |

## What reviewers say

### CARL app

[App page](https://appshunter.io/ios/app/carl-app/id1518314520)

Access sophisticated hedge fund investment strategies previously unavailable to the general public. Build, test, and invest in your own quant hedge fund portfolios with customizable risk and return objectives. Offers real-time performance updates and flexible liquidity.

**Highlights:** Hedge fund investment strategies, Quant hedge fund portfolio building, Customizable risk and return, Technology and data-driven strategies, Low minimum investments, Real-time performance updates, Monthly liquidity

**Features:** macOS Compatibility

**In-app purchases:** none


### Let Bob

[App page](https://appshunter.io/ios/app/let-bob/id1552851134)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is CARL app free?

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

### Is Let Bob free?

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

### Do CARL app or Let Bob have ads?

Let Bob shows ads; CARL app does not.

### Which is updated more often, CARL app or Let Bob?

CARL app ships an update every 6 weeks, and Let Bob every 4 days. Most recently, CARL app was updated on June 4, 2026 and Let Bob on September 19, 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.*