# RPN vs CatLabel

The clearest difference is rating: RPN at 4.4 against CatLabel's 2.7. RPN also leads on review sentiment (71% vs 50%) and update cadence (every 6 months vs every 19 months). CatLabel's advantage is price ($0.99 vs $1.99). On ads, in-app purchases, monetization model and device support there is nothing between them.

RPN costs $1.99 and CatLabel $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

RPN holds the better App Store score, 4.4 against 2.7. Both are backed by a comparable volume of ratings — 14 and 3 respectively. Written reviews point the same way: 71% of RPN's written reviews are positive against 50% of CatLabel's.

RPN ships an update every 6 months, CatLabel every 19 months. The most recent releases landed on November 4, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | RPN | CatLabel |
| --- | --- | --- |
| Price | $1.99 | **$0.99** |
| Rating | **[4.4 (14 ratings)](https://appshunter.io/ios/app/rpn-35-sd/id956224485/reviews)** | [2.7 (3 ratings)](https://appshunter.io/ios/app/catlabel/id1640875904/reviews) |
| Number of ratings | **14** | 3 |
| Positive reviews | **71.4% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 months** | Every 19 months |
| Monetization | Paid | Paid |
| Size | 14 MB | 2 MB |
| Requires iOS | **12.0** | 17.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [CuVee Software](https://appshunter.io/developer/424873503) | [Johan Jaderblom](https://appshunter.io/developer/1465591829) |

## What reviewers say

### RPN

[App page](https://appshunter.io/ios/app/rpn-35-sd/id956224485)

This app emulates the first pocket scientific calculator, offering a photo-realistic vintage experience. It simulates original operating speeds and unique arithmetic bugs, with optional modern enhancements like non-volatile registers.

**Highlights:** Photo-realistic look-and-feel, Multiple vintage skins, Vintage and Enhanced modes, Optional key-click and key-glow, Swipe to correct input, Display stack and memory registers

**Features:** macOS Compatibility

**In-app purchases:** none


### CatLabel

[App page](https://appshunter.io/ios/app/catlabel/id1640875904)

Create custom text and color labels for your device's home screen. Organize your pages with glanceable widgets, making navigation easier.

**Highlights:** Custom text labels, Customizable colors, Home screen widgets, Improved page organization, Glanceable information

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is RPN free?

RPN costs $1.99, with no in-app purchases.

### Is CatLabel free?

CatLabel costs $0.99, with no in-app purchases.

### Which has better reviews, RPN or CatLabel?

RPN is rated higher. RPN averages 4.4 out of 5 from 14 ratings, while CatLabel averages 2.7 from 3 ratings.

### Do RPN or CatLabel have ads?

Neither RPN nor CatLabel shows ads.

### Which is updated more often, RPN or CatLabel?

RPN ships an update every 6 months, and CatLabel every 19 months. Most recently, RPN was updated on November 4, 2026 and CatLabel on November 3, 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.*