RPN vs Read Easier
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RPN
This app is a photo-realistic simulation of the classic HP-25 scientific calculator. It offers advanced programming features, a vast function library, and modern enhancements for enhanced usability on iOS devices.
- Photo-realistic simulation
- Programmable (99/999 steps)
- 15 user-defined function keys
- 100 symbolic labels
- 100 visible registers
- Program library with 150+ programs
- Over 270 functions
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RPN-25 CE is a photo-realistic simulation of Hewlett-Packard's highly popular scientific calculator HP-25 for the iPhone. Produced from August 1975 through 1978, it was the "Squash" member of the second-generation HP calculators known as the "Woodstock" series. It was also the first programmable calculator costing less than $200. RPN-25 CE simulates the HP-25C version released in July 1976. Its major improvement in that update was "Continuous Memory". While the simulator works just like the original calculator, a number of carefully designed extensions make it massively more powerful. Features: • Photo-realistic look • Programmable (99 or 999 steps), subroutines, conditional loops, branching • Insert and delete steps with automatic address correction • 15 user-defined function keys of up to 6 characters each, redefinable under program control • Programmable text messages • Program Auto-Start option upon loading • 100 symbolic labels • 100 visible registers, "non-volatile", with unrestricted store/recall arithmetic • 100 flags, visible at a glance • Single-step constants • Program comments • Program library with more than 150 programs pre-installed • More than 270 functions and operations not available on the HP-25 • 100 sounds built-in • Much faster than the original • "Live" register view supporting user interaction (run/stop, single-stepping) • "Live" stack view • Thousands separator (optional) • High-contrast display (optional) • Selectable pause length (up to a day) • Program listing view with program title and description • Program library view • Store, name and retrieve any number of programs • Sharing: Files, iCloud Drive, e-mail, AirDrop, Dropbox, copy, paste, print • Import and run RPN-32 CE and GO-25 programs • Run a large number of HP-41 programs with little or no changes • Clock display (AM/PM or 24h) • Supports Dark Mode Calculator functions: • Statistics, including clearing statistics registers only • Factorial for arbitrary arguments • Trigonometric functions (degrees, radians, grads) • Polar/rectangular conversions • Inverse, square root, logarithm, exponential, Pi • Percentage • Storage arithmetic (store and recall) • Extended stack operations • Low-battery warning • Sound alerts • ..and many, many more Details: cuveesoft.ch/rpn25
Read Easier
This Safari extension enhances web content readability by integrating the Atkinson Hyperlegible font and offering custom zoom. It allows for one-click activation, preserves website layouts, and is optimized for performance and privacy. Designed to reduce eye strain and improve focus for all users.
- Atkinson Hyperlegible font integration
- Customizable text zoom
- One-click activation/deactivation
- Preserves website layout and elements
- Privacy-focused, no data collection
- Optimized for performance
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Transform your web browsing experience with Read Easier, the ultimate Safari Extension designed to make online content more accessible and enjoyable to read. # Key Features: 1. Atkinson Hyperlegible Font Integration: • Replace default web fonts with the cutting-edge Atkinson Hyperlegible font • Developed by Braille Institute, optimized for maximum legibility • Ideal for users with low vision, dyslexia, or anyone who values clarity 2. Custom Zoom Functionality: • Easily adjust text size to your preference • Set a default zoom level for all websites 3. One-Click Activation: • Toggle the extension on/off with a single click • Seamlessly switch between original and enhanced page views 4. Smart Preservation: • Maintains website layouts and responsiveness • Retains images, videos, and interactive elements 5. Performance Optimized: • Lightweight extension with minimal impact on browsing speed • Works efficiently across various website designs # Benefits: • Improved Readability: Experience clearer, more distinct letters and numbers • Reduced Eye Strain: Enjoy comfortable reading sessions, even during extended use • Enhanced Focus: Minimize distractions with uniform, easy-to-read text • Accessibility Boost: Make the web more inclusive for all users • Customizable Experience: Tailor your browsing to your unique visual needs # Perfect For: • Students spending hours researching online • Professionals who read extensive digital documents • Elderly users navigating the digital world • Anyone who wants a more comfortable reading experience on the web # Privacy Focused: • No data collection or tracking • Works entirely on your device • Your browsing habits remain 100% private Download Read Easier today and revolutionize your web reading experience. Say goodbye to eye strain and hello to crystal-clear content with just one click!
Screenshots
Verdict
The clearest difference is rating: Read Easier at 5.0 against RPN's 4.3. Read Easier also leads on review sentiment (100% vs 80%) and device support (4 vs 2). RPN's advantage is update cadence (every 2 months vs every 15 months) and ratings volume (10 vs 1). On 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
RPN costs $2.99 and Read Easier $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Read Easier holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: RPN has 10 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 80% of RPN's written reviews are positive against 100% of Read Easier's.
RPN ships an update every 2 months, Read Easier every 15 months. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.
| Parameter | RPN | Read Easier |
|---|---|---|
| Price | $2.99 | $1.99 — better |
| Rating | 4.3 (10 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 80.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 10 — better | 1 |
| Update frequency | Every 2 months — better | Every 15 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 12.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 28 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | CuVee Software | Pierre Stanislas |
Customer experience
RPN
Read Easier
In-app purchases
RPN
No in-app purchases
Read Easier
No in-app purchases









