Special Dates vs Quantum Technology Toolbox
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Special Dates
Easily save and track important dates with a minimalist countdown widget. This app helps you remember upcoming events like birthdays or bills, syncing them across your devices.
- Save important dates
- Track days remaining
- Periodic event saving
- Birthday reminders
- Bill tracking
- iOS 14 widget support
- Cross-device syncing
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Save your important dates and track the days that have left. Simplest app to save dates and see a countdown of each one. Allows to save periodically events like birthday or bills. Supports all the widget sizes that have iOS 26 and the dates will be synced between your devices
Quantum Technology Toolbox
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Quantum Technology Toolbox - your pocket lab assistant. Quantum Technology Toolbox is a calculator for calculating the oh-so-ubiquitous interferometric visibility with a few simple button presses. How many times haven't we fiddled with regular calculators, trying to remember intermediary values when working in the lab? The solution to this cumbersome calculation is here with your own pocket visibility measurement data bank. In QTT you can compute, store and organise your visibility measurements into collections. A single click allows you to filter values, and export them to csv. This allows you to easily keep track of your experiment's progress while aligning the experiment.
Screenshots
Verdict
The clearest difference is in-app purchases: Quantum Technology Toolbox at none against Special Dates's 3. Quantum Technology Toolbox also leads on iOS requirement (18.0 vs 26.0). Special Dates's advantage is device support (3 vs 1). On price 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
Both are free to download. Special Dates sells 3 one-off in-app purchases. Quantum Technology Toolbox asks for nothing beyond the download.
| Parameter | Special Dates | Quantum Technology Toolbox |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (5 ratings) — better | — |
| Positive reviews | 61.0% of reviews | — |
| Number of ratings | 5 — better | — |
| Update frequency | Every 3 months | — |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free | — |
| Devices | iPhone, iPad, Mac — better | iPhone |
| Requires iOS | 26.0 | 18.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Ernesto Fernández Calles | JOAKIM ERIK MIKAEL ARGILLANDER |
In-app purchases
Special Dates
- Coffee$0.99
- Cake$2.99
- Party$4.99
Quantum Technology Toolbox
No in-app purchases
Questions
Is Special Dates free?
Is Quantum Technology Toolbox free?
Do Special Dates or Quantum Technology Toolbox have ads?
Other comparisons
