Comparison

Modern RPN vs Loud Alarm Clock

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Modern RPN

A minimalist reverse Polish notation calculator for iOS devices. It offers Standard, Binary, and Hex modes for quick calculations and programmer-friendly conversions, featuring a clean interface and a 4-level stack.

Highlights
  • Reverse Polish Notation (RPN) input
  • Standard, Binary, and Hex modes
  • 4-level visible stack
  • Calculation history
  • Saved session state
  • Clean dark interface
Features
Read full description

Modern RPN is a minimalist reverse polish notation calculator for iPhone and iPad, with Standard, Binary, and Hex modes for fast everyday math and programmer-friendly conversions. Use a clean 4-level stack, instant mode switching, calculation history, and saved session state to move quickly without clutter. Features: • True RPN input with ENTER to push or duplicate values • Standard, Binary, Financial, and Hex calculator modes • Mode-aware entry and display formatting • 4-level visible stack: T, Z, Y, X • Core operations: add, subtract, multiply, divide • Stack tools: POP, X/Y swap, sign toggle, backspace, and all clear • Calculation history with timestamps • History filtering by All, Standard, Binary, Financial, or Hex • Saved session state for your current mode, stack, and in-progress input • Clean dark interface designed for focus and readability • No accounts, no ads, no data collection Modern RPN is designed for people who want the speed of a classic RPN calculator with a modern iOS interface.

About

Loud Alarm Clock

This app helps you build an earlier wake-up habit by gradually shifting your alarm earlier each day. It offers a sustainable approach to becoming an early riser by starting from your current wake-up time and moving towards your goal at a pace you choose.

Highlights
  • Gradual alarm shifting
  • Customizable pace
  • Progress tracking
  • Achievement badges
  • Home/Lock Screen widgets
  • Simple setup
Features
Read full description

Wake up earlier, gradually. RISER helps you build an earlier wake-up habit by moving your alarm earlier in small daily steps instead of forcing a huge jump overnight. If you have ever set an ambitious early alarm, hit snooze, and slipped straight back into your normal routine, RISER is built for you. Most early wake-up plans fail because they ask too much, too soon. Going from your usual wake-up time straight to 5am sounds motivating at night, but often feels unrealistic in the morning. RISER takes a more sustainable approach. You start from the time you actually wake up now, choose the time you want to reach, and let the app guide you there with gradual shifts of 2 to 15 minutes per day. The result is a wake-up plan that feels more natural, less extreme, and easier to stick to. How RISER works: • Set your current wake-up time • Choose your goal wake-up time • Pick your pace, from very gentle to faster progress • Wake up and let RISER move your alarm earlier over time • Use optional snooze support when you need flexibility Instead of relying on motivation alone, RISER gives you structure. You do not need to keep resetting alarms, guessing what time to try next, or starting over every time one rough morning throws you off. RISER is designed to help you make steady progress and keep moving towards your goal. Built to help you stay consistent: • One smart alarm that gradually shifts earlier • Clear progress tracking so you can see how far you have come • A simple dashboard that keeps your next alarm and goal in view • Achievement badges for milestones, streaks, and target wins • Home Screen and Lock Screen widget support for quick visibility • Easy setup with no complicated routine planning RISER is ideal if you: • Want to wake up earlier without shocking your system • Are tired of setting early alarms and snoozing them • Want a better morning routine built through small, realistic changes • Prefer steady habit building over extreme challenges • Want a simple way to work towards becoming an early riser Whether you want to wake up 20 minutes earlier, 1 hour earlier, or finally build the routine needed to reach a bigger goal, RISER helps you take the next step without making the whole process feel overwhelming. Why people use RISER: • To build an earlier wake-up habit that lasts • To reduce snoozing and start the day with more intention • To make progress without jumping to an unrealistic schedule • To follow a plan that feels manageable enough to maintain Waking up earlier is easy to talk about and much harder to do consistently. RISER is designed to close that gap. It gives you a realistic path from where you are now to where you want to be, one morning at a time. Set your start time. Set your goal. Let RISER help you wake up earlier with a plan you can actually stick to. Note: RISER requires a Premium Upgrade for some features, which can be managed or cancelled at any time via your Apple ID Settings. Free usage available to all users. For more information: Privacy Policy: https://studio93.cc/privacy Terms of Service: https://studio93.cc/terms Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Modern RPN4 screens
Loud Alarm Clock4 screens

Verdict

The call

The clearest difference is price: Loud Alarm Clock at Free against Modern RPN's $2.99. Loud Alarm Clock also leads on ratings volume (7 vs 1). Modern RPN's advantage is in-app purchases (none vs 3). On rating, review sentiment, update cadence and ads 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

CostPrice · In-app purchases · Ads · Monetization

Loud Alarm Clock is free to download; Modern RPN costs $2.99 up front. Loud Alarm Clock sells 3 in-app purchases, starting at $2.99 per month. Modern RPN asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Modern RPN against 5.0 for Loud Alarm Clock. That said, the two scores are not equally well evidenced: Loud Alarm Clock has 7 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

Modern RPN ships an update every 5 days, Loud Alarm Clock every 4 days. The most recent releases landed on October 28, 2026 and October 24, 2026 respectively.

Scorecard4 real differences · 6 level
Modern RPN versus Loud Alarm Clock: the parameters behind the verdict, then further details
ParameterModern RPNLoud Alarm Clock
Price$2.99Free — better
Rating5.0 (1 ratings)5.0 (7 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings17 — better
Update frequencyEvery 5 daysEvery 4 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFreemium — better
DevicesiPhone, iPad — betteriPhone
Requires iOS26.226.0 — better
Further details — not scored
Size2 MB74 MB
Age rating4+4+
DeveloperKevin FlathersCharlie Courtenay

Customer experience

Modern RPN

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Loud Alarm Clock

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews5 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Modern RPN

No in-app purchases

3 purchases

Loud Alarm Clock

Subscriptions2
  • RISER: PRO Monthly Plan3 Days trial$2.991 Month
  • RISER: PRO Yearly Plan$19.991 Year
One-time1
  • RISER: PRO Lifetime$2.99

Questions

Is Modern RPN free?
Modern RPN costs $2.99, with no in-app purchases.
Is Loud Alarm Clock free?
Loud Alarm Clock is free to download, with in-app purchases available.
Which has better reviews, Modern RPN or Loud Alarm Clock?
Modern RPN and Loud Alarm Clock are both rated 5.0 out of 5 on the App Store, from 1 and 7 ratings respectively.
Do Modern RPN or Loud Alarm Clock have ads?
Neither Modern RPN nor Loud Alarm Clock shows ads.
Which is updated more often, Modern RPN or Loud Alarm Clock?
Modern RPN ships an update every 5 days, and Loud Alarm Clock every 4 days. Most recently, Modern RPN was updated on October 28, 2026 and Loud Alarm Clock on October 24, 2026.

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