# RPN vs OT

The clearest difference is rating: OT at 5.0 against RPN's 4.7. OT also leads on update cadence (every 3 months vs every 7 months). RPN's advantage is ratings volume (11 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

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

OT holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: RPN has 11 ratings behind it against 1, so its average is the more settled of the two.

RPN ships an update every 7 months, OT every 3 months. The most recent releases landed on August 26, 2026 and June 7, 2026 respectively.

## The numbers

| Metric | RPN | OT |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (11 ratings)](https://appshunter.io/ios/app/rpn-70-sd/id738422213/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ot-hr/id6503678075/reviews)** |
| Number of ratings | **11** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 3 months** |
| Monetization | Free | Free |
| Size | 17 MB | 49 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [CuVee Software](https://appshunter.io/developer/424873503) | [Myanmar Software Integrated Solutions Co., Ltd](https://appshunter.io/developer/1499677918) |

## What reviewers say

### RPN

[App page](https://appshunter.io/ios/app/rpn-70-sd/id738422213)

This app is a faithful simulation of a rare 1974 financial calculator, offering all its original functions with enhanced features like more memory registers and a visual stack display. It's designed for users who appreciate vintage technology and need precise financial calculations.

**Highlights:** Photo-realistic vintage calculator design, Full HP-70 function simulation, Animated keys with sound, Enhanced stack and memory register view, Cut/copy/paste display value, Input parameter visual indicators

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

**In-app purchases:** none


### OT

[App page](https://appshunter.io/ios/app/ot-hr/id6503678075)

This application streamlines employee attendance tracking through various check-in methods like WiFi, GPS, selfies, and QR codes. It aids organizations in making informed decisions with accurate data and simplifies overtime hour calculation and leave balance checks for employees.

**Highlights:** Multiple check-in methods (WiFi, GPS, selfie, QR), Daily routing plan tracking, Overtime hour calculation, Overtime hour requests, Leave balance checks

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is RPN free?

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

### Is OT free?

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

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

OT is rated higher. RPN averages 4.7 out of 5 from 11 ratings, while OT averages 5.0 from 1 ratings.

### Do RPN or OT have ads?

Neither RPN nor OT shows ads.

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

RPN ships an update every 7 months, and OT every 3 months. Most recently, RPN was updated on August 26, 2026 and OT on June 7, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*