# Dr JB vs Sales Growth Engine

Dr JB and Sales Growth Engine are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Dr JB ships an update fortnightly, Sales Growth Engine every 3 weeks. Both last shipped on October 25, 2026.

## The numbers

| Metric | Dr JB | Sales Growth Engine |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 3 weeks |
| Size | 48 MB | 49 MB |
| Requires iOS | 16.6 | 16.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Chase Harrison](https://appshunter.io/developer/1751811136) | [Emily Sudduth](https://appshunter.io/developer/1721274803) |

## What reviewers say

### Dr JB

[App page](https://appshunter.io/ios/app/dr-jb/id6737421280)

**In-app purchases:** none


### Sales Growth Engine

[App page](https://appshunter.io/ios/app/sales-growth-engine/id6738230953)

**In-app purchases:** none


## Frequently asked questions

### Is Dr JB free?

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

### Is Sales Growth Engine free?

Sales Growth Engine is free to download, with no in-app purchases.

### Do Dr JB or Sales Growth Engine have ads?

Neither Dr JB nor Sales Growth Engine shows ads.

### Which is updated more often, Dr JB or Sales Growth Engine?

Dr JB ships an update fortnightly, and Sales Growth Engine every 3 weeks. Most recently, Dr JB was updated on October 25, 2026 and Sales Growth Engine on October 25, 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.*