Emu50g vs HP
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Emu50g
This app provides a full emulation of the HP50g scientific calculator, complete with its original skin. Save and load calculator states, manage libraries, and transfer data to and from your computer. Enjoy sound effects and a high-definition interface for a familiar calculator experience on your device.
- Full HP50g calculator emulation
- Save and load calculator states
- Manage and load custom libraries
- Copy/paste to device clipboard
- File transfer via WiFi/LAN
- Original HD skin
- Sound effects
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Emu50G is an emulator for the famous HP50g scientific calculator with its original skin. Carry your favorite calculator along with you every day and use it together with your favorite library! Features: -------- • Full emulation of the HP50g calculator. (You should refer to original HP50g user guide to learn how to use it.) • Save (backup) actual calc state and create new one. • Load saved state (restore backup). • Save and load your favorite libraries, etc. (you must provide them by yourself) • Copy and paste your calculator results or screenshots to and from the iPhone/iPod clipboard. • Transfer files from and to your computer (WiFi and LAN required). • Original HD skin files. • Support for landscape (currently for Whole Sized skin – iPad default skin) • Support of sound effects. • Tap the LCD to get more information.
HP
Emulates classic Hewlett Packard RPN scientific calculators from the 1970s. Experience the original HP-35, HP-45, and HP-21 models on your iPhone.
- RPN calculator emulation
- HP-35 model
- HP-45 model
- HP-21 model
- Classic scientific calculator interface
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The classic Hewlett Packard RPN (Reverse Polish Notation) calculators. - HP-35, HP-45. First pocket scientific calculators (1972). - HP-21. 2nd gen of the HP-35 (1975)
Screenshots
Verdict
The clearest difference is review sentiment: HP at 100% against Emu50g's 51%. HP also leads on price (Free vs $8.99) and rating (4.6 vs 4.0). Emu50g's advantage is device support (3 vs 1) and iOS requirement (8.0 vs 17.2). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
HP is free to download; Emu50g costs $8.99 up front. Neither carries in-app purchases, so what you see is what you pay.
HP holds the better App Store score, 4.6 against 4.0. Both are backed by a comparable volume of ratings — 46 and 59 respectively. Written reviews point the same way: 51% of Emu50g's written reviews are positive against 100% of HP's.
Emu50g ships an update every 6 weeks, HP every 11 days. The most recent releases landed on October 26, 2026 and October 27, 2026 respectively.
| Parameter | Emu50g | HP |
|---|---|---|
| Price | $8.99 | Free — better |
| Rating | 4.0 (46 ratings) | 4.6 (59 ratings) — better |
| Positive reviews | 50.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 46 | 59 — better |
| Update frequency | Every 6 weeks | Every 11 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 8.0 — better | 17.2 |
| Further details — not scored | ||
| Size | 44 MB | 2 MB |
| Age rating | +4 | 4+ |
| Developer | TheWinterStorm (Marek Zima) | Enrique Haro |
Customer experience
Emu50g
HP
Bugs and requests
Emu50g
Reported bugs
16 issues- App crashes on startup
- App freezes during use
- App stops working after iOS updates
- App does not open
- App closes immediately after opening
Show 11 moreShow fewer
- Data in Port 2 is lost
- Key presses are not registered or delayed
- Display shows garbage or is blank
- Unable to load skin
- Programs/libraries are corrupted or disappear
- File structure is inaccessible
- Copy/paste functionality is broken
- Input mode indicators are missing
- Calculator screen doesn't turn on
- Error message 'cant open XML'
- Calculations are incorrect (e.g., 18/5 = 18/5)
Requested features
17 requests- Update application urgently
- Fix iOS compatibility issues
- Improve key sensitivity/button size
- Add high-resolution skin option
- Allow program installation via file manager/iTunes
Show 12 moreShow fewer
- Add Viga G program
- Support for SD card emulation
- Improve Port 2 stability
- Option for dark mode
- Better skins with bigger keys
- Support for 64-bit iOS 11
- Make calculator screen larger/occupy full screen
- Allow transfer of programs from physical calculator
- Fix copy/paste to/from stack
- Add input mode indicators (left-shift, right-shift, alpha)
- Fix Port 2 data persistence issue
- Improve visual design of opening screen
HP
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Emu50g
No in-app purchases
HP
No in-app purchases
