Rad Onc Calc vs Hold It
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Rad Onc Calc
A radiation oncology calculator and reference tool for medical professionals. It provides quick access to essential calculations and treatment constraints.
- Radiation oncology calculations
- Treatment constraints reference
- Quick access to essential data
- Comprehensive tool for professionals
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Comprehensive RadOnc calculator and constraints reference for radiation oncologists.
Hold It
This app helps you stay focused by limiting access to distracting applications during study or deep work sessions. Set daily time limits or launch counts for chosen apps with a simple, private, and effective system. Pay once and use it forever, with no recurring fees or hidden costs.
- Limit app usage by time or launches
- One-time purchase, no subscriptions
- Simple setup in under a minute
- Works fully offline
- Private, no data uploaded or shared
- Designed for students and deep work
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Tired of monthly or yearly subscriptions? Competitors charge thousands of yen every year. With Hold It, pay just $9.99 ONCE, and it's yours forever.No recurring fees. No hidden costs. 100% private. Trying to study but keep checking your phone? You open your notes, then reach for social media without thinking. One video turns into thirty minutes. Your focus disappears before you even realize it. Hold It is a simple app designed to help you stay focused during study time. Stay focused without complicated setups Hold It removes distractions so you can concentrate on what matters. Choose the apps you want to limit. Set a daily time limit or number of launches. That is all. No shortcuts. No automations. No complex rules. Just a simple system that helps you stay on track. Designed for students and deep work Hold It is perfect for: – Students preparing for exams – People doing deep work – Anyone who wants a distraction-free study session Instead of relying on willpower, you change your environment. No subscriptions. Pay once. Use forever. Most productivity apps charge monthly or yearly subscriptions. Hold It is different. You pay once and keep using it forever. No recurring payments. No hidden upgrades. Simple setup in under one minute Select the apps you want to limit. Set your rules. Start focusing. No technical knowledge needed. Works fully offline Your data stays on your device. Nothing is uploaded. Nothing is shared. Focus is not about discipline If you struggle to focus, it is not because you are lazy. Apps are designed to keep you engaged. Hold It helps you take back control by removing distractions. Simple. Private. Effective.
Screenshots
Verdict
The clearest difference is price: Rad Onc Calc at Free against Hold It's $9.99. Rad Onc Calc also leads on iOS requirement (14.0 vs 18.0). Hold It's advantage is update cadence (every 2 weeks vs every 6 weeks). On ads, in-app purchases and device support 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
Rad Onc Calc is free to download; Hold It costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Rad Onc Calc ships an update every 6 weeks, Hold It every 2 weeks. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.
| Parameter | Rad Onc Calc | Hold It |
|---|---|---|
| Price | Free — better | $9.99 |
| Rating | 4.6 (12 ratings) — better | — |
| Positive reviews | — | 50.0% of reviews |
| Number of ratings | 12 — better | — |
| Update frequency | Every 6 weeks | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 14.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 57 MB | 3 MB |
| Age rating | 12+ | 4+ |
| Developer | Matthew Culbert | kaisei watanabe |
Customer experience
Rad Onc Calc
Hold It
In-app purchases
Rad Onc Calc
No in-app purchases
Hold It
No in-app purchases
Questions
Is Rad Onc Calc free?
Is Hold It free?
Do Rad Onc Calc or Hold It have ads?
Which is updated more often, Rad Onc Calc or Hold It?
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