# Nitty Gritty 4rex vs GRRNPay

The clearest difference is update cadence: GRRNPay at every 6 weeks against Nitty Gritty 4rex's every 36 months. Nitty Gritty 4rex's advantage is iOS requirement (11.0 vs 15.5). On price, ads, 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.

Nitty Gritty 4rex ships an update every 36 months, GRRNPay every 6 weeks. The most recent releases landed on October 27, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Nitty Gritty 4rex | GRRNPay |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/grrnpay/id6754450838/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 36 months | **Every 6 weeks** |
| Monetization | — | Free |
| Size | 7 MB | 155 MB |
| Requires iOS | **11.0** | 15.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Nittygritty Solutions Ltd](https://appshunter.io/developer/1569060896) | [HERNS INC](https://appshunter.io/developer/1809212206) |

## What reviewers say

### Nitty Gritty 4rex

[App page](https://appshunter.io/ios/app/nitty-gritty-4rex/id1569060894)

**Features:** macOS Compatibility

**In-app purchases:** none


### GRRNPay

[App page](https://appshunter.io/ios/app/grrnpay/id6754450838)

Manage your finances with AI-powered advice, tax assistance, and automated trading. Easily exchange global currencies for travel and make instant global payments. Convert digital currencies to local ones and vice versa.

**Highlights:** AI-powered financial advice, Tax management assistant, Automated trading agent, Global currency exchange, Local currency on-ramp/off-ramp, Instant global payments

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

**In-app purchases:** none


## Frequently asked questions

### Is Nitty Gritty 4rex free?

Nitty Gritty 4rex is free to download, with no in-app purchases.

### Is GRRNPay free?

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

### Do Nitty Gritty 4rex or GRRNPay have ads?

Neither Nitty Gritty 4rex nor GRRNPay shows ads.

### Which is updated more often, Nitty Gritty 4rex or GRRNPay?

Nitty Gritty 4rex ships an update every 36 months, and GRRNPay every 6 weeks. Most recently, Nitty Gritty 4rex was updated on October 27, 2026 and GRRNPay on October 14, 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.*