OffOf vs fullmoon
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OffOf
This app simplifies percentage calculations for shopping discounts and finding a percentage of a number. It offers a clean interface with satisfying sound and haptic feedback for a delightful user experience.
- Calculate percentage OFF
- Calculate percentage OF
- Shopping discount calculations
- Mechanical keyboard sounds
- Haptic feedback
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A beautiful percentage calculator. OffOf helps you calculate to percentage OFF of a particular number, and the percentage OF a particular number. OffOf is NOT a full calculator. Your device already comes with a great calculator. OffOf is a Percentage Calculator ONLY. • 35% OFF Instantly know how much you're going to spend while shopping. What is the cost of that $18.99 t-shirt when its 35% off? OffOf makes it easy to calculate. Simply enter 35% as the "Percentage" and 18.99 as the "Amount" and OffOf will show you how much you'll be spending after the discount. • 16% OF What is 16% of 2,458? OffOf will get you that answer instantly. Just enter 16% as the "Percentage" and 2,458 as the "Amount" and you'll know right away. • Real, satisfying mechanical keyboard sounds • Delightful haptic feedback on button presses and more
fullmoon
This app provides a private and offline way to interact with local large language models. It runs models directly on your device, optimized for Apple silicon, and is available across multiple Apple platforms. Personalize your experience and integrate with other apps via Shortcuts.
- Private LLM chat
- Fully offline operation
- On-device model execution
- Cross-platform Apple support
- Customizable themes and fonts
- Shortcut integration
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the simplest way to use private LLMs: works fully offline and private when you don’t have internet. runs models on-device optimized for Apple silicon. works on every platform: iOS, iPadOS, macOS, visionOS personalize: adjust the theme, fonts, and system prompt in the app. Shortcut: chat with fullmoon or get an output from a local model to use with other actions. free, open source, private.
Screenshots
Verdict
The clearest difference is price: fullmoon at Free against OffOf's $0.99. fullmoon also leads on update cadence (every 10 days vs every 59 months) and review sentiment (78% vs 61%). On rating, 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
fullmoon is free to download; OffOf costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
OffOf holds the better App Store score, 4.6 against 4.4. That said, the two scores are not equally well evidenced: fullmoon has 100 ratings behind it against 11, so its average is the more settled of the two. Written reviews complicate that: 61% of OffOf's written reviews are positive against 78% of fullmoon's, so the app with the better star average is not the one people write more warmly about.
OffOf ships an update every 59 months, fullmoon every 10 days. The most recent releases landed on September 22, 2026 and August 11, 2026 respectively.
| Parameter | OffOf | fullmoon |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 4.6 (11 ratings) — better | 4.4 (100 ratings) |
| Positive reviews | 60.7% of reviews | 77.8% of reviews — better |
| Number of ratings | 11 | 100 — better |
| Update frequency | Every 59 months | Every 10 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, Mac, Apple Watch, Vision Pro — better | iPhone, iPad, Mac, Vision Pro |
| Requires iOS | 17.2 — better | 17.6 |
| Further details — not scored | ||
| Size | 5 MB | 30 MB |
| Age rating | 4+ | 17+ |
| Developer | Daeo Corp. Software | Mainframe Computer, Inc. |
Customer experience
OffOf
fullmoon
User reviews
OffOf
From 11 App Store ratingsWhat we love
- ✨ Gorgeous design
- 👍 Simple and useful utility
- 💯 Best percentage calculator
- ✅ Does what it says
- 💡 Beautifully minimalist
Room to improve
- ❌ Not updated
- ⚠️ Abandoned app
- 📉 No longer works
- 💔 Incompatible with iOS
- ⏳ Outdated
fullmoon
From 100 App Store ratingsWhat we love
- 🚀 Fast and efficient
- 🔒 Offline usage
- 👍 Clean and polished interface
- 👍 Works on older devices
- 👍 Friendly for less tech-savvy users
Room to improve
- 🐛 Compatibility issues
- 🐛 Downloading/installing models can be slow
- 🐛 Responses can be inaccurate or incomplete
- 🐛 App crashes when using certain features
Bugs and requests
OffOf
Reported bugs
3 issues- Not compatible with new iOS updates
- App no longer opens/works
- Freezes and force closes
Requested features
5 requests- Make it a fully functional calculator
- Update to new software/iOS versions
- Show final price after discount
- Auto clear fields on tap
- Update for X screens
fullmoon
Reported bugs
2 issues- Incompatibility with iPhone SE2 and iPad Pro Gen3 despite supporting Metal 3
- Deepseek models not working on some devices
Requested features
6 requests- Add support for saving/copying full chat conversations
- Expand functionality through Shortcuts integration
- Provide more advanced language models
- Allow users to remove/delete downloaded models
- Add support for attaching files and images
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- Implement voice mode and customizable AI models
In-app purchases
OffOf
No in-app purchases
fullmoon
No in-app purchases
