# Convex Programmer's Calculator vs ntfy

The clearest difference is update cadence: ntfy at fortnightly against Convex Programmer's Calculator's every 8 months. ntfy also leads on ratings volume (452 vs 6) and review sentiment (78% vs 67%). On price, rating, ads and in-app purchases there is nothing between them.

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

On the App Store both sit at effectively the same score — 4.7 for Convex Programmer's Calculator against 4.8 for ntfy. That said, the two scores are not equally well evidenced: ntfy has 452 ratings behind it against 6, so its average is the more settled of the two. Written reviews are what separate them: 67% of Convex Programmer's Calculator's written reviews are positive against 78% of ntfy's.

Convex Programmer's Calculator ships an update every 8 months, ntfy fortnightly. The most recent releases landed on September 27, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Convex Programmer's Calculator | ntfy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (6 ratings)](https://appshunter.io/ios/app/convex-programmers-calculator/id1021414602/reviews) | **[4.8 (452 ratings)](https://appshunter.io/ios/app/ntfy/id1625396347/reviews)** |
| Number of ratings | 6 | **452** |
| Positive reviews | 66.7% of reviews | **78.4% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Fortnightly** |
| Monetization | Free | Free |
| Size | 0 MB | 3 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Matthew Daigle](https://appshunter.io/developer/1021414601) | [Philipp Heckel](https://appshunter.io/developer/1625396349) |

## What reviewers say

### Convex Programmer's Calculator

[App page](https://appshunter.io/ios/app/convex-programmers-calculator/id1021414602)

Convert numbers between hexadecimal, decimal, octal, and binary. Perform byte flips, bit shifts, and calculate two's complement. Features bit indicators and word grouping for improved binary readability.

**Highlights:** Number base conversion, Two's complement calculation, Byte flipping for endianness, Left and right bit shifting, Binary readability enhancements, Copy, paste, and clear functionality

**Features:** macOS Compatibility

**In-app purchases:** none


### ntfy

[App page](https://appshunter.io/ios/app/ntfy/id1625396347)

This app allows you to send push notifications to your phone from scripts or other applications using simple HTTP requests. It acts as a client for a free, open-source pub-sub service, enabling you to receive alerts and updates directly on your device.

**Highlights:** Send notifications via REST API, Subscribe to topics, Publish messages via HTTP, Integrates with Bash/PowerShell, Free and open source client

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Simple and easy to use
- 🔒 Great for self-hosting
- 👍 Reliable and works as expected
- 🚀 Quick and easy to set up
- 🚀 Lightweight and functional

**What reviewers complain about**

- 🐛 Notification issues on iOS
- 🔍 Limited features compared to other platforms
- 🔍 Lacks customization options
- 🐛 Occasional crashes or delivery issues

**Reported bugs**

- Notifications not working on iOS
- Broken click URLs in notifications
- Compatibility issues with iOS notification summarizing

**Requested features**

- Ability to change notification sounds
- Support for Apple Watch
- Customizable topic names/aliases
- Improved iOS notification handling
- All topics view and read/unread indicators


## Frequently asked questions

### Is Convex Programmer's Calculator free?

Convex Programmer's Calculator is free to download, with no in-app purchases.

### Is ntfy free?

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

### Which has better reviews, Convex Programmer's Calculator or ntfy?

ntfy is rated higher. Convex Programmer's Calculator averages 4.7 out of 5 from 6 ratings, while ntfy averages 4.8 from 452 ratings.

### Do Convex Programmer's Calculator or ntfy have ads?

Neither Convex Programmer's Calculator nor ntfy shows ads.

### Which is updated more often, Convex Programmer's Calculator or ntfy?

Convex Programmer's Calculator ships an update every 8 months, and ntfy fortnightly. Most recently, Convex Programmer's Calculator was updated on September 27, 2026 and ntfy on October 15, 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.*