# Scientific Timer vs (nothing) To Do

The clearest difference is update cadence: (nothing) To Do at monthly against Scientific Timer's every 16 months. (nothing) To Do also leads on device support (3 vs 1). Scientific Timer's advantage is price ($0.99 vs $3.99). On ads, in-app purchases and iOS requirement there is nothing between them.

Scientific Timer costs $0.99 and (nothing) To Do $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Scientific Timer ships an update every 16 months, (nothing) To Do monthly. The most recent releases landed on November 8, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Scientific Timer | (nothing) To Do |
| --- | --- | --- |
| Price | **$0.99** | $3.99 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 16 months | **Monthly** |
| Monetization | — | Paid |
| Size | 8 MB | 6 MB |
| Requires iOS | 18.0 | 18.0 |
| Devices | iPhone | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Stephane Boutet](https://appshunter.io/developer/1794014850) | [Anand Raj R](https://appshunter.io/developer/514675684) |

## What reviewers say

### Scientific Timer

[App page](https://appshunter.io/ios/app/scientific-timer/id6741395405)

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

**In-app purchases:** none


### (nothing) To Do

[App page](https://appshunter.io/ios/app/nothing-to-do/id6748456831)

This app helps you organize tasks using the Eisenhower Decision Matrix, sorting them into 'Do,' 'Schedule,' 'Delegate,' and 'Delete' categories. It offers smart prioritization, a minimalist design, and syncs across devices. Focus on what truly matters and reduce overwhelm.

**Highlights:** Eisenhower Decision Matrix prioritization, Four-quadrant task view, Minimalist design, Apple Watch support, iCloud sync

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support, iPhone Duo support

**In-app purchases:** none


## Frequently asked questions

### Is Scientific Timer free?

Scientific Timer costs $0.99, with no in-app purchases.

### Is (nothing) To Do free?

(nothing) To Do costs $3.99, with no in-app purchases.

### Do Scientific Timer or (nothing) To Do have ads?

Neither Scientific Timer nor (nothing) To Do shows ads.

### Which is updated more often, Scientific Timer or (nothing) To Do?

Scientific Timer ships an update every 16 months, and (nothing) To Do monthly. Most recently, Scientific Timer was updated on November 8, 2026 and (nothing) To Do on October 30, 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.*