# Flashlight vs QuaternionCalc

The clearest difference is price: Flashlight at Free against QuaternionCalc's $2.99. Flashlight also leads on update cadence (every 3 months vs every 15 months) and iOS requirement (15.0 vs 18.0). QuaternionCalc's advantage is ads (none vs shown). On in-app purchases and device support there is nothing between them.

Flashlight is free to download; QuaternionCalc costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Flashlight ships an update every 3 months, QuaternionCalc every 15 months. The most recent releases landed on October 19, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | Flashlight | QuaternionCalc |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | **[4.9 (99K ratings)](https://appshunter.io/ios/app/flashlight-night-light-clock/id493794012/reviews)** | — |
| Number of ratings | **99K** | — |
| Positive reviews | 90.3% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 3 months** | Every 15 months |
| Monetization | Ad-supported | — |
| Size | 47 MB | 2 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Tim O's Studios, LLC](https://appshunter.io/developer/412839685) | [Princeton Satellite Systems](https://appshunter.io/developer/395066089) |

## What reviewers say

### Flashlight

[App page](https://appshunter.io/ios/app/flashlight-night-light-clock/id493794012)

This utility app provides an immediate and bright flashlight experience. It also features a large, easy-to-read clock, making it ideal for nightstand use. Control the light remotely from a smartwatch.

**Highlights:** Instant flashlight activation, Bright LED illumination, Large clock display, Remote watch control, Simple controls

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Bright and powerful light
- ⏱️ Useful clock feature
- 👍 Simple and easy to use
- 🔍 Convenient for dark situations
- 💡 Helpful for finding things in the dark

**What reviewers complain about**

- 🔊 Loud ads disrupt use
- 🔋 Drains battery quickly
- 🔆 Could use adjustable brightness levels

**Reported bugs**

- Ads block use of the flashlight
- Flashlight doesn't work when phone is off

**Requested features**

- Customizable brightness settings
- Option to disable automatic light on app open
- Color changing light modes


### QuaternionCalc

[App page](https://appshunter.io/ios/app/quaternioncalc/id1022679681)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Flashlight free?

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

### Is QuaternionCalc free?

QuaternionCalc costs $2.99, with no in-app purchases.

### Do Flashlight or QuaternionCalc have ads?

Flashlight shows ads; QuaternionCalc does not.

### Which is updated more often, Flashlight or QuaternionCalc?

Flashlight ships an update every 3 months, and QuaternionCalc every 15 months. Most recently, Flashlight was updated on October 19, 2026 and QuaternionCalc on September 27, 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.*